https://en.bitcoin.it/w/api.php?action=feedcontributions&feedformat=atom&user=PhantomcircuitBitcoin Wiki - User contributions [en]2026-05-18T06:29:48ZUser contributionsMediaWiki 1.43.8https://en.bitcoin.it/w/index.php?title=Segwit_support&diff=63464Segwit support2017-06-18T07:24:38Z<p>Phantomcircuit: </p>
<hr />
<div><big><big>'''PLEASE NOTE:''' This list is not yet complete.</big></big><br />
<br />
'''Developers: Please add a row for yourself to reflect your positions. If for some reason you don't already have a wiki account that can edit the page, make an account and ask luke-jr for help if you get caught in the anti-spam.'''<br />
<br />
{| class="wikitable"<br />
| {{No}} || doesn't support (but might or might not go along with it with sufficient community support)<br />
|-<br />
| {{Deficient}} || okay with the idea, but considers it to have insufficient community support<br />
|-<br />
| {{Evaluating}} || still evaluating the idea<br />
|-<br />
| {{AccJuly}} || it is a workable solution, provided it is activated before August 1 (and therefore BIP148-compatible)<br />
|-<br />
| {{Wanting}} || positively likes the idea, but considers it to have insufficient community support<br />
|-<br />
| {{Weak}} || better than nothing at all<br />
|-<br />
| {{Acceptable}} || it is a workable solution<br />
|-<br />
| {{Prefer}} || it is what he would choose if it was only up to him and no outside influences<br />
|}<br />
<br />
<!-- README: please keep alphabetically ordered by surname! --><br />
<br />
''Note that support for BIP148 does not mean developers support merging it into Core.''<br />
<br />
{| class="wikitable sortable"<br />
! rowspan=2 | Developer<br />
! rowspan=2 | Aff* <!-- Using one year before the the creation date of this page as the benchmark. Do not list yourself as affiliated with a project that you haven't made meaningful contributions to since then. --><br />
! Segwit itself<br />
! colspan=3 | Deployment methods<br />
! colspan=2 | Hardfork bundles (Silbert agreement)<br />
|-<br />
! [https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki BIP 141] !! [https://github.com/bitcoin/bips/blob/master/bip-0148.mediawiki BIP 148] !! [https://github.com/bitcoin/bips/blob/master/bip-0149.mediawiki BIP 149] !! [https://github.com/bitcoin/bips/blob/master/bip-0091.mediawiki BIP 91] || Segwit2x || [https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014445.html COOP]<br />
|-<br />
| Karl-Johan Alm || Core || {{Prefer}} || {{Acceptable}} || {{Acceptable}} || {{Acceptable}} || {{No}} || {{No}}<br />
|-<br />
| Bryan Bishop || Core || {{Prefer}} || {{Wanting}} || {{Acceptable}} || {{Weak}} || {{No}} || {{No}}<br />
|-<br />
| ฿tcDrak || Core || {{Prefer}} || {{Acceptable}} || {{Acceptable}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Andrew Chow || Core || {{Prefer}} || {{Prefer}} || {{Acceptable}} || {{Weak}} || {{No}} || {{No}}<br />
|-<br />
| Matt Corallo || Core || {{Prefer}} || {{No}} || || {{Acceptable}} || {{No|LOL}} ||<br />
|-<br />
| Johnathan Corgan || Core || {{Prefer}} || {{Prefer}} || {{Acceptable}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Luke Dashjr || Core || {{Prefer}} || {{Prefer}} || {{No}} || {{AccJuly}} || {{No}} || {{Deficient}}<br />
|-<br />
| Christian Decker || c-lightning || {{Prefer}} || {{Acceptable}} || || || || <br />
|-<br />
| Nicolas Dorier || Core || {{Prefer}} || {{Deficient}} || {{Acceptable}} || {{AccJuly}} || ||<br />
|-<br />
| Thaddeus Dryja || lit || {{Prefer}} || {{No}} || {{Acceptable}} || {{Acceptable}} || {{No}} || {{No}}<br />
|-<br />
| Marco Falke || Core || {{Prefer}} || {{Deficient}} || {{Prefer}} || {{Deficient}} || ||<br />
|-<br />
| Mark Friedenbach || BIP 68/112 || {{Prefer}} || {{Prefer}} || {{No}} || {{AccJuly}} || {{No|LOL}} || {{No|Nope}}<br />
|-<br />
| Pavel Janik || Core || {{Prefer}} || {{No}} || {{Acceptable}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Thomas Kerin || Core || {{Prefer}} || {{Wanting}} || {{Prefer}} || {{Weak}} || {{No}} || {{No}}<br />
|-<br />
| Johnson Lau || Core || {{Prefer}} || {{Wanting}} || {{Acceptable}} || {{Acceptable}} || ||<br />
|-<br />
| Eric Lombrozo || || {{Prefer}} || {{Acceptable}} || {{Weak}} || {{AccJuly}} || {{No}} || {{No}}<br />
|-<br />
| Greg Maxwell || Core || {{Prefer}} || {{Deficient}} || {{Acceptable}} || {{Weak}} || {{No}} || {{No}}<br />
|-<br />
| Alex Morcos || Core || {{Prefer}} || {{Deficient}} || {{Acceptable}} || {{Weak}} || {{No}} ||<br />
|-<br />
| Laolu "roasbeef" Osuntokun || lnd || {{Prefer}} || || || || {{No}} ||<br />
|-<br />
| Pavol "stick" Rusnak || Trezor || {{Prefer}} || {{Wanting}} || {{Acceptable}} || {{Acceptable}} || {{No}} || {{No}}<br />
|-<br />
| Rusty Russell || c-lightning || {{Prefer}} || {{Prefer}} || || || ||<br />
|-<br />
| Gregory Sanders || Core || {{Prefer}} || {{Wanting}} || {{Acceptable}} || {{Weak}} || {{No}} ||<br />
|-<br />
| Jonas Schnelli || Core || {{Prefer}} || {{Wanting}} || {{Acceptable}} || {{Acceptable}} || {{No}} || {{No}}<br />
|-<br />
| Patrick Strateman || Core || {{Prefer}} || || || || {{No}} || {{No}}<br />
|-<br />
| Paul Sztorc || || {{Prefer}} || {{Deficient}} || {{Wanting}} || {{AccJuly}} || {{Evaluating}} || {{No}}<br />
|-<br />
| Jorge Timon || Core || {{Prefer}} || {{No}} || {{Prefer}} || {{Deficient}} || {{No}} || {{No}}<br />
|-<br />
| Peter Todd || Core || {{Prefer}} || {{Acceptable}} || || || ||<br />
|-<br />
| Warren Togami || Elements || {{Prefer}} || {{Prefer}} || {{Acceptable}} || || ||<br />
|-<br />
| Wladimir van der Laan || Core || {{Prefer}} || {{Prefer}} || {{Acceptable}} || {{Acceptable}} || {{No}} || {{No}}<br />
|-<br />
| Leo Wandersleb || Mycelium || {{Prefer}} || {{Prefer}} || {{Acceptable}} || {{Weak}} || {{No}} || {{No}}<br />
|-<br />
| Pieter Wuille || Core || {{Prefer}} || || || || {{No}} ||<br />
|}<br />
<br />
* "affiliation" is an optional field for the company or project the individual is associated with, that most qualifies the person to comment on the matter and is not meant as a company or project endorsement of the individual's position.<br />
<br />
<hr><br />
<br />
'''When adding companies below, sources for each position MUST be provided.'''<br />
<br />
{| class="wikitable sortable"<br />
! rowspan=2 | Company <br />
! rowspan=2 | Service<br />
! Segwit itself<br />
! colspan=3 | Deployment methods<br />
! colspan=2 | Hardfork bundles (Silbert agreement)<br />
|-<br />
! [https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki BIP 141] !! [https://github.com/bitcoin/bips/blob/master/bip-0148.mediawiki BIP 148] !! [https://github.com/bitcoin/bips/blob/master/bip-0149.mediawiki BIP 149] !! [https://github.com/bitcoin/bips/blob/master/bip-0091.mediawiki BIP 91] || Segwit2x || [https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2017-May/014445.html COOP]<br />
|-<br />
| Abra || wallet || {{Prefer}}<ref name="coindance" /> || {{Prefer}}<ref name="coindance" /> || || {{AccJuly}} || {{AccJuly}}<ref name="silbert" /> ||<br />
|-<br />
| Bitcoin India || exchange/miner || {{Prefer}}<ref name="coindance" /> || {{Prefer}}<ref name="coindance" /> || || || ||<br />
|-<br />
| Bitfinex || exchange || {{Acceptable}}<ref name="coindance" /> || {{Acceptable}} || || || ||<br />
|-<br />
| Bitfury || miner || {{Prefer}}<ref name="coindance" /> || {{Acceptable}} || || {{AccJuly}} || {{AccJuly}}<ref name="silbert" /> ||<br />
|-<br />
| Bitmain || miner || {{AccJuly}}<ref name="bitmain">[https://blog.bitmain.com/en/uahf-contingency-plan-uasf-bip148/ Bitmain's plot against BIP148]</ref> || {{No}} || || {{AccJuly}} || {{AccJuly}}<ref name="bitmain" /> ||<br />
|-<br />
| Bitonic/BL3P.eu || exchange || {{Prefer}}<ref name="bitonic">[https://bitonic.nl/en/news/138/our-position-on-scaling-proposals Bitonic's position on scaling proposals]</ref> || {{Prefer}}<ref name="bitonic"/> || {{Acceptable}}<ref name="bitonic"/> || {{Weak}}<ref name="bitonic"/> || {{No}}<ref name="bitonic"/> || {{No}}<br />
|-<br />
| Bitpay || wallet || {{Prefer}}<ref name="bccore_swadoption"/> || {{No}} || || {{Prefer}} || {{Prefer}}<ref name="silbert" /> ||<br />
|-<br />
| Bitrated || || {{Prefer}}<ref name="coindance" /> || {{Prefer}}<ref name="coindance" /> || || || ||<br />
|-<br />
| Bitrefill || merchant || {{Prefer}}<ref name="coindance" /> || {{Prefer}}<ref name="coindance" /> || || || ||<br />
|-<br />
| Bitsquare || exchange || {{Prefer}} || {{Prefer}}<ref name="bitsquare">[https://forum.bitsquare.io/t/bitsquare-will-support-uasf-bitcoin-not-bitmaincoin/2265 Bitsquare will support UASF Bitcoin not BitMainCoin]</ref> || {{Acceptable}}<ref name="bitsquare"/> || || || ||<br />
|-<br />
| Bitstamp || exchange || || || || || ||<br />
|-<br />
| Bittylicious || exchange || {{Prefer}}<ref name="coindance" /> || {{Prefer}}<ref>[https://twitter.com/Bittylicious_/status/867305106668224513 Bittylicious answer on Twitter]</ref> || || || ||<br />
|-<br />
| Blockchain.info || wallet || {{Acceptable}}<ref name="bccore_swadoption"/> || || || {{AccJuly}} || {{AccJuly}}<ref name="silbert" /> || <br />
|-<br />
| blockonomics || || {{Prefer}} || {{Prefer}}<ref>[https://twitter.com/blockonomics_co/status/851738251509497856 blockonomics announcement on Twitter]</ref> || || || ||<br />
|-<br />
| Bustabit|| gambling || {{Prefer}}<ref name="bustabit">[https://www.bustabit.com/statement-on-forks Bustabit Statement on Bitcoin Forks]</ref> || {{Acceptable}}<ref name="bustabit"/> || || || {{AccJuly}}<ref name="bustabit"/> ||<br />
|-<br />
| Ciphrex || wallet / dev stack || {{Prefer}}<ref name="coindance" /> || {{Acceptable}}<ref name="coindance" /> || || || ||<br />
|-<br />
| Coinbase || wallet || {{Acceptable}}<ref name="bccore_swadoption"/> || || || {{AccJuly}} || {{AccJuly}}<ref name="silbert" /> || <br />
|-<br />
| CoinGate || exchange || {{Prefer}}<ref name="coindance" /> || {{Prefer}}<ref name="coindance" /> || || || ||<br />
|-<br />
| CoinJar || wallet || || {{Evaluating}}<ref>[https://twitter.com/GetCoinJar/status/875581525730787329 CoinJar answer on Twitter]</ref> || || || ||<br />
|-<br />
| Coinkite || || {{Prefer}}<ref name="coindance" /> || {{Prefer}}<ref name="coindance" /> || || || ||<br />
|-<br />
| coinomi || wallet || {{Prefer}}<ref name="coindance" /> || {{Prefer}}<ref name="coindance" /> || || || ||<br />
|-<br />
| DigitalBitbox || wallet(hardware) || {{Prefer}} || {{Acceptable}} || {{Prefer}}|| || ||<br />
|-<br />
| Échange de Montréal || exchange || {{Prefer}}<ref name="echangedemontreal" /> || {{Prefer}}<ref name="echangedemontreal" /> || || ||<br />
|-<br />
| Electrum || wallet || {{Prefer}}<ref name="coindance" /> || {{Prefer}}<ref name="coindance" /> || || || ||<br />
|-<br />
| Kraken || exchange || || || || || ||<br />
|-<br />
| LightningASIC || miner || {{Prefer}}<ref name="coindance" /> || {{Prefer}}<ref name="coindance" /> || || || ||<br />
|-<br />
| OneHash || betting || {{Prefer}}<ref>[https://blog.onehash.com/sick-of-presidential-election-3f1a2defbbbf OneHash, "Sick of presidential election ?!"]</ref> || || || {{AccJuly}} || {{AccJuly}}<ref name="silbert" /> ||<br />
|-<br />
| Slushpool || miner || {{Prefer}}<ref name="coindance" /> || {{Acceptable}}<ref name="coindance" /> || || || ||<br />
|-<br />
| Vaultoro || exchange || {{Prefer}}<ref name="coindance" /> || {{Acceptable}}<ref name="coindance" /> || || {{AccJuly}} || {{AccJuly}}<ref name="silbert" /> ||<br />
|-<br />
| Walltime || || {{Prefer}}<ref name="coindance" /> || {{Prefer}}<ref name="coindance" /> || || || ||<br />
|-<br />
| Xapo || wallet || {{Prefer}}<ref name="coindance" /> || || || {{Prefer}} || {{Prefer}}<ref>[https://twitter.com/tedmrogers/status/867362691370954752 Tweet by president of Xapo]</ref> || <br />
|-<br />
|}<br />
<br />
<references><br />
<ref name="bccore_swadoption">[https://bitcoincore.org/en/segwit_adoption/ Bitcoin Core's Segwit adoption list]</ref><br />
<ref name="coindance">[https://coin.dance/poli Coin Dance, "Global Bitcoin Political Support & Public Opinion"]</ref><br />
<ref name="silbert">[https://medium.com/@DCGco/bitcoin-scaling-agreement-at-consensus-2017-133521fe9a77 Digital Currency Group, "Bitcoin Scaling Agreement at Consensus 2017"]</ref><br />
<ref name="echangedemontreal">[https://twitter.com/echangedemtl/status/875781093261271040 Échange de Montréal on twitter]</ref><br />
</references></div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Intersango&diff=59648Intersango2015-12-18T17:03:33Z<p>Phantomcircuit: </p>
<hr />
<div>Was an [[currency exchange|exchange]] offering multiple trading markets for trading bitcoins against multiple currencies.<br />
<br />
Traders add funds and then place orders to buy and sell. Intersango acted as an escrow. The site charged no/low trading fees.<br />
<br />
Intersango had a trading API.<br />
<br />
==Trading==<br />
===Buying===<br />
<br />
A buy order is executed partially or in full when the price bid can be matched against a sell order that is at or below the bid amount.<br />
<br />
===Selling===<br />
<br />
A sell order is executed partially or in full when the price asked can be matched against a buy order that is at or above the ask amount.<br />
<br />
<br />
No Fee (for a limited time).<br />
<br />
==Adding Funds==<br />
===BTC===<br />
<br />
There are no fees incurred when when transferring bitcoins for deposit. Funds are available once [[confirmation|confirmed]] (4 confirms), a process that can take roughly forty minutes.<br />
<br />
===EUR===<br />
The exchange accepts SEPA bank transfers for deposit. A 5 PLN fee is taken by the bank. No additional fees is taken.<br />
<br />
===PLN===<br />
The exchange accepts polish bank transfers for deposit. There are no fees.<br />
<br />
==Withdrawing Funds==<br />
<br />
===BTC===<br />
Bitcoins may be withdrawn at no charge.<br />
<br />
===EUR===<br />
Withdrawals as SEPA transfers. A fee of 5 PLN is taken by the bank. No additional fee is charged.<br />
<br />
===PLN===<br />
Withdrawals as standard polish PLN bank transfers.<br />
<br />
==API==<br />
<br />
See the [https://intersango.com/api.php API page] for more info.<br />
<br />
Streaming API code example:<br />
<source lang="python"><br />
# expected message types are<br />
# "orderbook", "depth", "trade", "ping"<br />
import socket, json<br />
<br />
s = socket.create_connection(('db.intersango.com', 1337))<br />
b = ''<br />
<br />
while True:<br />
b += s.recv(8192)<br />
while '\r\n' in b:<br />
i = b.find('\r\n')<br />
m = b[:i].strip()<br />
b = b[i+2:]<br />
m = json.loads(m)<br />
print m<br />
</source><br />
<br />
Trading API:<br />
<source lang="python"><br />
import httplib<br />
import urllib<br />
import json<br />
<br />
class Intersango:<br />
ORDER_QUEUED = 'queued'<br />
ORDER_OPEN = 'open'<br />
ORDER_EXPIRED = 'expired'<br />
ORDER_CANCELLED = 'cancelled'<br />
ORDER_FULFILLED = 'fulfilled'<br />
<br />
BUY = 'false'<br />
SELL = 'true'<br />
<br />
def __init__(self, api_key):<br />
self.connection = httplib.HTTPSConnection('intersango.com')<br />
self.api_key = api_key<br />
<br />
def make_request(self, page, params={}):<br />
headers = {"Content-type": "application/x-www-form-urlencoded",<br />
"Connection": "Keep-Alive", "Keep-Alive": 30,<br />
"Accept": "text/plain"}<br />
if type(params) == dict:<br />
params['api_key'] = self.api_key<br />
elif type(params) == list:<br />
params.append(('api_key', self.api_key))<br />
else:<br />
raise TypeError('Unknown parameter list type')<br />
params = urllib.urlencode(params)<br />
base_url = '/api/authenticated/v0.1/%s.php'%page<br />
self.connection.request('POST', base_url, params, headers)<br />
response = self.connection.getresponse()<br />
if response.status == 404:<br />
return None<br />
return json.loads(response.read())<br />
<br />
def accounts(self):<br />
return self.make_request('listAccounts')<br />
<br />
def orders(self, account_id, states=[], last_order_id=None):<br />
params = [('account_id', account_id)]<br />
for state in states:<br />
params.append(('states[]', state))<br />
if last_order_id is not None:<br />
params.append(('last_order_id', last_order_id))<br />
return self.make_request('listOrders', params)<br />
<br />
def deposits(self, account_id):<br />
return self.make_request('listDeposits', {'account_id': account_id})<br />
<br />
def withdrawals(self, account_id):<br />
return self.make_request('listWithdrawalRequests',<br />
{'account_id': account_id})<br />
<br />
def place_limit_order(self, quantity, rate, is_selling, base_id, quote_id):<br />
params = {'quantity': quantity, 'rate': rate, 'selling': is_selling,<br />
'base_account_id': base_id, 'quote_account_id': quote_id}<br />
return self.make_request('placeLimitOrder', params)<br />
<br />
def cancel_order(self, account_id, order_id):<br />
params = {'account_id': account_id, 'order_id': order_id}<br />
return self.make_request('requestCancelOrder', params)<br />
<br />
def cancel_withdrawal(self, account_id, withdrawal_request_id):<br />
params = {'account_id': account_id, <br />
'withdrawal_request_id': withdrawal_request_id}<br />
return self.make_request('cancelWithdrawalRequest', params)<br />
</source><br />
<br />
Example usage:<br />
<br />
<source lang="python"><br />
intersango = Intersango('3223kdkk323h32kj3hkj23233j')<br />
print 'Accounts: ', intersango.accounts()<br />
print 'Orders: ', \<br />
intersango.orders(411289412410, <br />
[Intersango.ORDER_CANCELLED, Intersango.ORDER_FULFILLED])<br />
print 'Deposits: ', intersango.deposits(861502532543)<br />
print 'Withdrawals: ', intersango.withdrawals(702703681384)<br />
intersango.place_limit_order('1', '2.0', Intersango.BUY, <br />
861502521543, 411982412410)<br />
intersango.cancel_order(412989412410, 21724)<br />
</source><br />
<br />
==History==<br />
<br />
The service was launched on July 6, 2011<ref>[http://forum.bitcoin.org/index.php?topic=26543.0 Intersango.com EUR exchange is now live]</ref>. The Intersango [[:Category:Open Source|open source]] software that the exchange runs on was announced on March 17, 2011<ref>[https://bitcointalk.org/index.php?topic=4579.0 Free Bitcoin exchange software- Intersango]</ref>. In September, 2011 the exchange began using a new version of the Intersango open source exchange project with two currency markets (BTC/EUR, BTC/USD) live under the Intersango brand and plans made for the third (BTC/GBP) when [[Britcoin]] accounts are migrated at a future date.<br />
<br />
On October 9, 2012, the exchange announced imminent plans to shutter its BTC/USD market. On December 19, 2012, the exchange closed its BTC/GBP market after being unable to re-establish a UK banking relationship<ref>[http://bitcointalk.org/index.php?topic=63877.msg1409989#msg1409989 Intersango Exchange (Closed BTC/GBP)]</ref>.<br />
<br />
==See Also==<br />
<br />
* [[Buying bitcoins]]<br />
* [[Selling bitcoins]]<br />
<br />
==External Links==<br />
<br />
* [https://intersango.com Intersango] EUR exchange website<br />
* [http://gitorious.org/intersango Intersango] exchange project on Gitorious<br />
<br />
==References==<br />
<references/><br />
<br />
[[Category:Exchanges]]<br />
[[Category:eWallets]]<br />
[[Category:Offline]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Intersango&diff=59647Intersango2015-12-18T17:02:21Z<p>Phantomcircuit: </p>
<hr />
<div>A [[currency exchange|exchange]] offering multiple trading markets for trading bitcoins against multiple currencies.<br />
<br />
Traders add funds and then place orders to buy and sell. Intersango acts as an escrow. The site charges no trading fees.<br />
<br />
[[Bitcoin Consultancy]] operates the exchange.<br />
<br />
Intersango has a trading [https://bitcoinconsultancy.com/wiki/index.php/Intersango/API API]<br />
<br />
==Trading==<br />
===Buying===<br />
<br />
A buy order is executed partially or in full when the price bid can be matched against a sell order that is at or below the bid amount.<br />
<br />
===Selling===<br />
<br />
A sell order is executed partially or in full when the price asked can be matched against a buy order that is at or above the ask amount.<br />
<br />
<br />
No Fee (for a limited time).<br />
<br />
==Adding Funds==<br />
===BTC===<br />
<br />
There are no fees incurred when when transferring bitcoins for deposit. Funds are available once [[confirmation|confirmed]] (4 confirms), a process that can take roughly forty minutes.<br />
<br />
===EUR===<br />
The exchange accepts SEPA bank transfers for deposit. A 5 PLN fee is taken by the bank. No additional fees is taken.<br />
<br />
===PLN===<br />
The exchange accepts polish bank transfers for deposit. There are no fees.<br />
<br />
==Withdrawing Funds==<br />
<br />
===BTC===<br />
Bitcoins may be withdrawn at no charge.<br />
<br />
===EUR===<br />
Withdrawals as SEPA transfers. A fee of 5 PLN is taken by the bank. No additional fee is charged.<br />
<br />
===PLN===<br />
Withdrawals as standard polish PLN bank transfers.<br />
<br />
==API==<br />
<br />
See the [https://intersango.com/api.php API page] for more info.<br />
<br />
Streaming API code example:<br />
<source lang="python"><br />
# expected message types are<br />
# "orderbook", "depth", "trade", "ping"<br />
import socket, json<br />
<br />
s = socket.create_connection(('db.intersango.com', 1337))<br />
b = ''<br />
<br />
while True:<br />
b += s.recv(8192)<br />
while '\r\n' in b:<br />
i = b.find('\r\n')<br />
m = b[:i].strip()<br />
b = b[i+2:]<br />
m = json.loads(m)<br />
print m<br />
</source><br />
<br />
Trading API:<br />
<source lang="python"><br />
import httplib<br />
import urllib<br />
import json<br />
<br />
class Intersango:<br />
ORDER_QUEUED = 'queued'<br />
ORDER_OPEN = 'open'<br />
ORDER_EXPIRED = 'expired'<br />
ORDER_CANCELLED = 'cancelled'<br />
ORDER_FULFILLED = 'fulfilled'<br />
<br />
BUY = 'false'<br />
SELL = 'true'<br />
<br />
def __init__(self, api_key):<br />
self.connection = httplib.HTTPSConnection('intersango.com')<br />
self.api_key = api_key<br />
<br />
def make_request(self, page, params={}):<br />
headers = {"Content-type": "application/x-www-form-urlencoded",<br />
"Connection": "Keep-Alive", "Keep-Alive": 30,<br />
"Accept": "text/plain"}<br />
if type(params) == dict:<br />
params['api_key'] = self.api_key<br />
elif type(params) == list:<br />
params.append(('api_key', self.api_key))<br />
else:<br />
raise TypeError('Unknown parameter list type')<br />
params = urllib.urlencode(params)<br />
base_url = '/api/authenticated/v0.1/%s.php'%page<br />
self.connection.request('POST', base_url, params, headers)<br />
response = self.connection.getresponse()<br />
if response.status == 404:<br />
return None<br />
return json.loads(response.read())<br />
<br />
def accounts(self):<br />
return self.make_request('listAccounts')<br />
<br />
def orders(self, account_id, states=[], last_order_id=None):<br />
params = [('account_id', account_id)]<br />
for state in states:<br />
params.append(('states[]', state))<br />
if last_order_id is not None:<br />
params.append(('last_order_id', last_order_id))<br />
return self.make_request('listOrders', params)<br />
<br />
def deposits(self, account_id):<br />
return self.make_request('listDeposits', {'account_id': account_id})<br />
<br />
def withdrawals(self, account_id):<br />
return self.make_request('listWithdrawalRequests',<br />
{'account_id': account_id})<br />
<br />
def place_limit_order(self, quantity, rate, is_selling, base_id, quote_id):<br />
params = {'quantity': quantity, 'rate': rate, 'selling': is_selling,<br />
'base_account_id': base_id, 'quote_account_id': quote_id}<br />
return self.make_request('placeLimitOrder', params)<br />
<br />
def cancel_order(self, account_id, order_id):<br />
params = {'account_id': account_id, 'order_id': order_id}<br />
return self.make_request('requestCancelOrder', params)<br />
<br />
def cancel_withdrawal(self, account_id, withdrawal_request_id):<br />
params = {'account_id': account_id, <br />
'withdrawal_request_id': withdrawal_request_id}<br />
return self.make_request('cancelWithdrawalRequest', params)<br />
</source><br />
<br />
Example usage:<br />
<br />
<source lang="python"><br />
intersango = Intersango('3223kdkk323h32kj3hkj23233j')<br />
print 'Accounts: ', intersango.accounts()<br />
print 'Orders: ', \<br />
intersango.orders(411289412410, <br />
[Intersango.ORDER_CANCELLED, Intersango.ORDER_FULFILLED])<br />
print 'Deposits: ', intersango.deposits(861502532543)<br />
print 'Withdrawals: ', intersango.withdrawals(702703681384)<br />
intersango.place_limit_order('1', '2.0', Intersango.BUY, <br />
861502521543, 411982412410)<br />
intersango.cancel_order(412989412410, 21724)<br />
</source><br />
<br />
==History==<br />
<br />
The service was launched on July 6, 2011<ref>[http://forum.bitcoin.org/index.php?topic=26543.0 Intersango.com EUR exchange is now live]</ref>. The Intersango [[:Category:Open Source|open source]] software that the exchange runs on was announced on March 17, 2011<ref>[https://bitcointalk.org/index.php?topic=4579.0 Free Bitcoin exchange software- Intersango]</ref>. In September, 2011 the exchange began using a new version of the Intersango open source exchange project with two currency markets (BTC/EUR, BTC/USD) live under the Intersango brand and plans made for the third (BTC/GBP) when [[Britcoin]] accounts are migrated at a future date.<br />
<br />
On October 9, 2012, the exchange announced imminent plans to shutter its BTC/USD market. On December 19, 2012, the exchange closed its BTC/GBP market after being unable to re-establish a UK banking relationship<ref>[http://bitcointalk.org/index.php?topic=63877.msg1409989#msg1409989 Intersango Exchange (Closed BTC/GBP)]</ref>.<br />
<br />
==See Also==<br />
<br />
* [[Buying bitcoins]]<br />
* [[Selling bitcoins]]<br />
<br />
==External Links==<br />
<br />
* [https://intersango.com Intersango] EUR exchange website<br />
* [http://gitorious.org/intersango Intersango] exchange project on Gitorious<br />
<br />
==References==<br />
<references/><br />
<br />
[[Category:Exchanges]]<br />
[[Category:eWallets]]<br />
[[Category:Offline]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Tragedy_of_the_Commons&diff=58018Tragedy of the Commons2015-07-30T21:00:57Z<p>Phantomcircuit: Proof of Stake does not work.</p>
<hr />
<div>{{stub}}<br />
<br />
[http://en.wikipedia.org/wiki/Tragedy_of_the_commons See Wikipedia]. In Game Theory, Tragedy of the Commons is a [http://en.wikipedia.org/wiki/Market_failure market failure] scenario where a common good is produced in lower quantities than the public desires, or consumed in greater quantities than desired. One example is pollution - it is in the public's best interest not to pollute, but every individual has incentive to pollute (e.g. because burning fossil fuel is cheap, and individually each consumer doesn't affect the environment much).<br />
<br />
The relevance to Bitcoin is a hypothetical market failure that might happen in the far future when the block reward from mining drops near zero. In the current Bitcoin design, the only fees miners earn at this time are [[Transaction fees]]. Miners will accept transactions with any fees (because the marginal cost of including them is minimal) and users will pay lower and lower fees (in the order of satoshis). It is possible that the honest miners will be under-incentivized, and that too few miners will mine, resulting in lower [[difficulty]] than what the public desires. This might mean various [[51% attack]]s will happen frequently, and the Bitcoin will not function correctly.<br />
<br />
The Bitcoin protocol can be altered to combat this problem - one proposed solution is [[Dominant Assurance Contracts]].<br />
<br />
Another more radical proposal (in the sense that the required change won't be accepted by most bitcoiners) is to have a perpetual reward that is constant in proportion to the monetary base. That can be achieved in [https://bitcointalk.org/index.php?topic=7500 two ways]. An ever increasing reward (inflatacoin/expocoin) or a constant reward plus a demurrage fee in all funds that caps the monetary base (freicoin).<br />
<br />
This scenario was discussed on several threads:<br />
- [https://bitcointalk.org/index.php?topic=67900.0 Tragedy of the Commons]<br />
- [https://bitcointalk.org/index.php?topic=6284.0 Disturbingly low future difficulty equilibrium]<br />
- [http://bitcoin.stackexchange.com/questions/3111/will-bitcoin-suffer-from-a-mining-tragedy-of-the-commons-when-mining-fees-drop-t Stack Exchange]<br />
<br />
Currently there is no consensus whether this problem is real, and if so, what is the best solution.</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Contract&diff=57023Contract2015-06-20T10:12:30Z<p>Phantomcircuit: Using sequence numbers is equivalent to trusting an unconfirmed transaction and thus insecure.</p>
<hr />
<div>A '''distributed contract''' is a method of using Bitcoin to form agreements with people via the block chain. Contracts don't make anything possible that was previously impossible, but rather, they allow you to solve common problems in a way that minimizes trust. Minimal trust often makes things more convenient by allowing human judgements to be taken out of the loop, thus allowing complete automation.<br />
<br />
By building low trust protocols that interact with Bitcoin, entirely new products can be created:<br />
<br />
* [[Smart Property|Smart property]] is property that can be atomically traded and loaned via the block chain.<br />
* [[Transferable virtual property]] are digital items that can be traded but not duplicated.<br />
* [[Agents]] are autonomous programs that maintain their own wallet, which they use to buy server time. Money is obtained by the agent selling services. If demand exceeds supply the agents can spawn children that either survive or die depending on whether they can get enough business.<br />
* [[Distributed markets]] are a way to implement peer to peer bond and stock trading, allowing Bitcoin to be evolve into a full competitor to the international financial system.<br />
* The [[Ripple currency exchange]] is a way to implement a distributed currency exchange based on social networks.<br />
<br />
This page also lists some smaller examples.<br />
<br />
Many of the ideas underlying Bitcoin contracts were first described by Nick Szabó in his seminal paper, <br />
[http://szabo.best.vwh.net/formalize.html Formalizing and Securing Relationships on Public Networks]. These pages were written by [mailto:mike@plan99.net Mike Hearn]. Contact him if you have an idea for a new type of contract. You can watch '''[https://www.youtube.com/watch?feature=player_embedded&v=mD4L7xDNCmA a video of a talk on contracts]''' that was presented at the Bitcoin 2012 conference in London.<br />
<br />
<br />
==A warning about the mempool transaction replacement mechanism==<br />
<br />
In places this page refers to the ability to use the nSequence field for transaction mempool replacement. This mechanism was disabled in [https://github.com/bitcoin/bitcoin/commit/05454818dc7ed92f577a1a1ef6798049f17a52e7#diff-118fcbaaba162ba17933c7893247df3aR522 2010], and more recently the code has been [https://github.com/bitcoin/bitcoin/commit/98c7c8fd1d3712e02be0e9f2eeca7e02aa54d197 removed completely], due to concerns over people using it to perform DoS attacks. Implementors should take this into account and try to create contract mechanisms that do not rely on mempool replacement if they wish to have their implementations work with current implementations. If Bitcoin changes in future to allow mempool replacement once again, this page will be updated.<br />
<br />
==Theory==<br />
<br />
Every [[transaction]] in Bitcoin has one or more inputs and outputs. Each input/output has a small, pure function associated with it called a [[script]]. Scripts can contain signatures over simplified forms of the transaction itself.<br />
<br />
Every transaction can have a lock time associated with it. This allows the transaction to be pending and replaceable until an agreed-upon future time, specified either as a block index or as a timestamp (the same field is used for both, but values less than 500 million are interpreted as a block index). If a transaction's lock time has been reached, we say it is final.<br />
<br />
Each transaction input has a sequence number. In a normal transaction that just moves value around, the sequence numbers are all UINT_MAX and the lock time is zero. If the lock time has not yet been reached, but all the sequence numbers are UINT_MAX, the transaction is also considered final. Sequence numbers can be used to issue new versions of a transaction without invalidating other inputs signatures, e.g., in the case where each input on a transaction comes from a different party, each input may start with a sequence number of zero, and those numbers can be incremented independently.<br />
<br />
Signature checking is flexible because the form of transaction that is signed can be controlled through the use of SIGHASH flags, which are stuck on the end of a signature. In this way, contracts can be constructed in which each party signs only a part of it, allowing other parts to be changed without their involvement. The SIGHASH flags have two parts, a mode and the ANYONECANPAY modifier:<br />
<br />
# SIGHASH_ALL: This is the default. It indicates that everything about the transaction is signed, except for the input scripts. Signing the input scripts as well would obviously make it impossible to construct a transaction, so they are always blanked out. Note, though, that other properties of the input, like the connected output and sequence numbers, ''are'' signed; it's only the scripts that are not. Intuitively, it means "I agree to put my money in, if everyone puts their money in and the outputs are this".<br />
# SIGHASH_NONE: The outputs are not signed and can be anything. Use this to indicate "I agree to put my money in, as long as everyone puts their money in, but I don't care what's done with the output". This mode allows others to update the transaction by changing their inputs sequence numbers.<br />
# SIGHASH_SINGLE: Like SIGHASH_NONE, the inputs are signed, but the sequence numbers are blanked, so others can create new versions of the transaction. However, the only output that is signed is the one at the same position as the input. Use this to indicate "I agree, as long as my output is what I want; I don't care about the others".<br />
<br />
The SIGHASH_ANYONECANPAY modifier can be combined with the above three modes. When set, only that input is signed and the other inputs can be anything.<br />
<br />
Scripts can contain the CHECKMULTISIG opcode. This opcode provides n-of-m checking: you provide multiple public keys, and specify the number of valid signatures that must be present. The number of signatures can be less than the number of public keys. An output can require two signatures to be spent by setting it to something like this:<br />
<br />
2 <pubkey1> <pubkey2> 2 CHECKMULTISIGVERIFY<br />
<br />
There are two general patterns for safely creating contracts:<br />
<br />
# Transactions are passed around outside of the P2P network, in partially-complete or invalid forms.<br />
# Two transactions are used: one (the contract) is created and signed but not broadcast right away. Instead, the other transaction (the payment) is broadcast after the contract is agreed to lock in the money, and then the contract is broadcast.<br />
<br />
This is to ensure that people always know what they are agreeing to.<br />
<br />
Together, these features let us build interesting new financial tools on top of the block chain.<br />
<br />
==Example 1: Providing a deposit==<br />
<br />
Imagine that you open an account on a website (eg, a forum or wiki) and wish to establish your trustworthiness with the operators, but you don't have any pre-existing reputation to leverage. One solution is to buy trust by paying the website some money. But if at some point you close your account, you'd probably like that money back. You may not trust the site enough to give them a deposit that they are tempted to spend. Another risk is that the site might just disappear one day. <br />
<br />
The goal is to prove that you made a sacrifice of some kind so the site knows you're not a spambot, but you don't want them to be able to spend the money. And if the operators disappear, you'd eventually like the coins back without needing anything from them.<br />
<br />
We can solve this problem with a contract:<br />
<br />
# The user and website send each other a newly-generated public key.<br />
# The user creates transaction Tx1 (the payment) putting 10 BTC into an output that requires both user and website to sign, but does not broadcast it. They use the key from the previous step for the site.<br />
# User sends the hash of Tx1 to the website.<br />
# The website creates a transaction Tx2 (the contract). Tx2 spends Tx1 and pays it back to the user via the address he provided in the first step. Note that Tx1 requires two signatures, so this transaction can't be complete. nLockTime is set to some date in the future (eg, six months). The sequence number on the input is set to zero.<br />
# Finally, the incomplete (half-signed) transaction is sent back to the user. The user checks that the contract is as expected - that the coins will eventually come back to him - but, unless things are changed, only after six months. Because the sequence number is zero, the contract can be amended in future if both parties agree. The script in the input isn't finished though; there are only zeros where the user's signature should be. He fixes that by signing the contract and putting the new signature in the appropriate spot.<br />
# The user broadcasts Tx1, then broadcasts Tx2.<br />
<br />
At this stage, the 10 BTC are in a state where neither the user nor the website can spend them independently. After six months, the contract will complete and the user will get the coins back, even if the website disappears.<br />
<br />
What if the user wishes to close his account early? The website creates a new version of Tx2 with nLockTime set to zero and the input sequence number set to UINT_MAX, then he re-signs it. The site hands the tx back to the user, who signs it as well. The user then broadcasts the transaction, terminating the contract early and releasing the coins.<br />
<br />
What if the six months is nearly up and the user wishes to keep his account? The same thing applies: the contract can be resigned with a newer nLockTime, a sequence number 1 higher than the previous and rebroadcast 2^32 times. No matter what happens, both parties must agree for the contract to change.<br />
<br />
Obviously, if the user turns out to be abusive (i.e., a spammer), the website will not allow an early close of the contract. If too much abuse is getting through, the size of the deposit can be raised or the length of the contract can be increased.<br />
<br />
==Example 2: Escrow and dispute mediation==<br />
<br />
A buyer wants to trade with somebody he doesn't know or trust. In the common case where the transaction goes well, the client doesn't want any third parties involved. If something goes wrong though, he'd like a third party to decide who gets the money - perhaps a professional dispute mediation service. Note that this concept can apply to either buyer or seller. The mediator might request proof of postage from the merchant, for example.<br />
<br />
In other words, one wants to lock up some coins so a third party has to agree in order for them to be spent:<br />
<br />
# Agree with the merchant on a dispute mediator (e.g., ClearCoin).<br />
# Ask the merchant for a public key (K1). Ask the mediator for a public key (K2). Create a new key for yourself (K3).<br />
# Send the merchant K2. The merchant challenges the mediator with a random nonce. The mediator signs the nonce with the private form of K2, thus proving it really belongs to merchant.<br />
# Create a transaction (Tx1) with an output script as follows and broadcast it:<br />
<br />
2 <K1> <K2> <K3> 3 CHECKMULTISIGVERIFY<br />
<br />
Now the coins are locked in such a way that they can only be spent by the following methods:<br />
<br />
# Client and the merchant agree (either a successful trade, or merchant agrees to reimburse client without mediation)<br />
# Client and the mediator agree (failed trade, mediator sides with client, like a charge-back)<br />
# The mediator and the merchant agree (goods delivered, merchant gets client's coins despite the dispute)<br />
<br />
When signing an input, the contents are set to the connected output. Thus, to redeem this transaction, the client creates a scriptSig containing zeros where the other signature should be, signs it, and then sets one of the slots to his new signature. The partially-complete transaction can then be sent to the merchant or mediator for the second signature.<br />
<br />
==Example 3: Assurance contracts==<br />
<br />
An [http://en.wikipedia.org/wiki/Assurance_contract assurance contract] is a way of funding the creation of a [http://www.auburn.edu/~johnspm/gloss/public_goods public good], that is, a good that, once created, anyone can benefit from for free. The standard example is a lighthouse: whilst everyone may agree that one should be built, it’s too expensive for an individual sailor to justify building one, given that it will also benefit all his competitors. <br />
<br />
One solution is for everyone to pledge money towards the creation of the public good, such that the pledges are only committed if the total value of all pledges is above the cost of creation. If not enough people contribute, nobody has to pay anything.<br />
<br />
Examples where Bitcoin is superior to traditional payment methods for assurance contract fundraising include applications where frequent, small pledges need to be made automatically, for instance internet radio station funding and [https://bitcointalk.org/index.php?topic=67255.msg788110#msg788110 web page translation]. Consider a browser extension that you send a bit of money to. It detects the current language of the page and broadcasts a pledge for a translation into your language to be prepared. If enough users with the extension land on the same page at the same time (eg, it was linked to from somewhere high traffic), then enough pledges are broadcast to trigger a payment to a company who prepares a high quality translation. When complete it automatically loads in your browser.<br />
<br />
We can model this in Bitcoin as follows:<br />
<br />
# An entrepreneur creates a new address and announces that the good will be created if at least 1000 BTC is raised. Anyone can contribute.<br />
# Each party wishing to pledge creates a new transaction spending some of their coins to the announced address, but they do not broadcast it. The transaction is similar to a regular transaction except for three differences: Firstly, there cannot be any change. If you don’t have any outputs of the right size, you must create one first by spending to one of your own addresses. Secondly, the input script signature is signed with SIGHASH_ALL | SIGHASH_ANYONECANPAY. Finally, the output value is set to 1000 BTC. Note that this is not a valid transaction because the output value is larger than the input value.<br />
# The transaction is uploaded to the entrepreneur's server, which saves it to disk and updates its count of how many coins have been pledged.<br />
# Once the server has enough coins, it merges the separate transactions together into a new transaction. The new transaction has a single output that simply spends to the announced address - it is the same as the outputs on each contributed transaction. The inputs to the transaction are collected from the contributed pledges.<br />
# The finished transaction is broadcast, sending the pledged coins to the announced address.<br />
<br />
This scheme relies on several aspects of the protocol. The first is the SIGHASH flags used. SIGHASH_ALL is the default and means the entire contents of the transaction are signed, except for the input scripts. SIGHASH_ANYONECANPAY is an additional modifier that means the signature only covers the input it’s found in - the other inputs are not signed and thus can be anything.<br />
<br />
By combining these flags together, we are able to create a signature that is valid even when other inputs are added, but breaks if the outputs or other properties of the transaction are changed.<br />
<br />
The second aspect we exploit is the fact that a transaction in which the output values are larger than the input values is invalid (for obvious reasons). This means it’s safe to send the entrepreneur a transaction that spends such coins - it’s impossible for him to claim the coins unless he has other inputs that sum to the output value or more.<br />
<br />
It's possible to create assurance contracts without using SIGHASH_ANYONECANPAY. Instead, a two step process is used in which pledges are collected without transactions, and once the total value is reached, a transaction with an input for each pledger is created and passed around until all signatures are collected. However, using SIGHASH_ANYONECANPAY and then merging is probably more convenient.<br />
<br />
An assurance contract can be prepared for '''[[Funding network security|funding network security]]''' for the next block. In this way, mining can be funded even if block space is not scarce.<br />
<br />
An elaboration of this concept is described by Tabarrok in his paper, [http://mason.gmu.edu/~atabarro/PrivateProvision.pdf “The private provision of public goods via dominant assurance contracts”]. In a dominant assurance contract, if a contract fails (not enough pledges within a set time window) the entrepreneur pays a fee to those who pledged so far. This type of contract attempts to arrange incentives such that taking part is always the right strategy. [[Dominant Assurance Contracts|A scheme for dominant assurance contracts]] in Bitcoin has been proposed.<br />
<br />
==Example 4: Using external state==<br />
<br />
Scripts are, by design, pure functions. They cannot poll external servers or import any state that may change as it would allow an attacker to outrun the block chain. What's more, the scripting language is extremely limited in what it can do. Fortunately, we can make transactions connected to the world in other ways.<br />
<br />
Consider the example of an old man who wishes to give an inheritance to his grandson, either on the grandson's 18th birthday or when the man dies, whichever comes first. <br />
<br />
To solve this, the man first sends the amount of the inheritance to himself so there is a single output of the right amount. Then he creates a transaction with a lock time of the grandson's 18th birthday that pays the coins to another key owned by the grandson, signs it, and gives it to him - but does not broadcast it. This takes care of the 18th birthday condition. If the date passes, the grandson broadcasts the transaction and claims the coins. He could do it before then, but it doesn't let him get the coins any earlier, and some nodes may choose to drop transactions in the memory pool with lock times far in the future.<br />
<br />
The death condition is harder. As Bitcoin nodes cannot measure arbitrary conditions, we must rely on an ''oracle''. An oracle is a server that has a keypair, and signs transactions on request when a user-provided expression evaluates to true.<br />
<br />
Here is an example. The man creates a transaction spending his output, and sets the output to:<br />
<br />
<hash> OP_DROP 2 <sons pubkey> <oracle pubkey> CHECKMULTISIG<br />
<br />
This is the oracle script. It has an unusual form - it pushes data to the stack then immediately deletes it again. The pubkey is published on the oracle's website and is well-known. The hash is set to be the hash of the user-provided expression stating that he has died, written in a form the oracle knows how to evaluate. For example, it could be the hash of the string:<br />
<br />
if (has_died('john smith', born_on=1950/01/02)) return (10.0, 1JxgRXEHBi86zYzHN2U4KMyRCg4LvwNUrp);<br />
<br />
This little language is hypothetical, it'd be defined by the oracle and could be anything. The return value is an output: an amount of value and an address owned by the grandson.<br />
<br />
Once more, the man creates this transaction but gives it directly to his grandson instead of broadcasting it. He also provides the expression that is hashed into the transaction and the name of the oracle that can unlock it.<br />
<br />
It is used in the following algorithm:<br />
<br />
# The oracle accepts a measurement request. The request contains the user-provided expression, a copy of the output script, and a partially complete transaction provided by the user. Everything in this transaction is finished except for the scriptSig, which contains just one signature (the grandson's) - not enough to unlock the output.<br />
# The oracle checks the user-provided expression hashes to the value in the provided output script. If it doesn't, it returns an error.<br />
# The oracle evaluates the expression. If the result is not the destination address of the output, it returns an error.<br />
# Otherwise the oracle signs the transaction and returns the signature to the user. Note that when signing a Bitcoin transaction, the input script is set to the connected output script. The reason is that when OP_CHECKSIG runs, the script containing the opcode is put in the input being evaluated, _not_ the script containing the signature itself. The oracle has never seen the full output it is being asked to sign, but it doesn't have to. It knows the output script, its own public key, and the hash of the user-provided expression, which is everything it needs to check the output script and finish the transaction.<br />
# The user accepts the new signature, inserts it into the scriptSig and broadcasts the transaction.<br />
<br />
If, and only if, the oracle agrees that the man is dead, the grandson can broadcast the two transactions (the contract and the claim) and take the coins.<br />
<br />
Oracles can potentially evaluate anything, yet the output script form in the block chain can always be the same. Consider the following possibilities:<br />
<br />
today() == 2011/09/25 && exchange_rate(mtgoxUSD) >= 12.5 && exchange_rate(mtgoxUSD) <= 13.5<br />
Require exchange rate to be between two values on a given date<br />
<br />
google_results_count(site:www.google.com/hostednews 'Mike Hearn' olympic gold medal) > 0<br />
A bet on me doing something that I will never actually do<br />
<br />
// Choose between one of two winners of a bet on the outcome of the Eurovision song contest.<br />
if (eurovision_winner() == 'Azerbaijan') <br />
return 1Lj9udBVDwptFffGSJSC2sohCfudQgSTPD; <br />
else <br />
return 1JxgRXEHBi86zYzHN2U4KMyRCg4LvwNUrp;<br />
<br />
The conditions that control whether the oracle signs can be arbitrarily complex, but the block chain never needs to contain more than a single hash.<br />
<br />
The [http://earlytemple.com/ ''Early Temple'' project] has implemented a prototype of an oracle that looks for a key phrase in a web page.<br />
<br />
===Trust minimization: challenges===<br />
<br />
There are various ways to reduce the level of required trust in the oracle.<br />
<br />
Going back to our first example, the oracle has not seen the transaction the grandson is trying to unlock, as it was never broadcast, thus, it cannot hold the grandson to ransom because it does not know whether the transaction it's signing for even exists. People can, and should, regularly '''challenge''' the oracle in an automated fashion to ensure it always outputs what is expected. The challenges can be done without spending any coins because the tx to be signed can be invalid (ie, connected to transactions that don't exist). The oracle has no way to know whether a request to be signed is random or real. How to challenge the oracle with conditions that are not yet true is however an open research question. <br />
<br />
===Trust minimization: multiple independent oracles===<br />
<br />
The number of keys in the CHECKMULTISIG can be increased to allow for '''n-of-m''' oracles if need be. Of course, it is vital to check that the oracles really are independent and not in collusion. An implementation of such a system, and explanation was published in the '''[http://github.com/orisi/wiki/wiki/Orisi-White-Paper Orisi whitepaper]'''.<br />
<br />
The idea, in short, is that independent oracles could be run by a set of trustworthy independent actors. Contract participants would first settle upon a set of oracles they both are comfortable using - for example by trusting [http://oracles.lo/ a dedicated site] - and then sign a contract requiring most of the oracles signatures to resolve.<br />
<br />
One of the interesting properties of such a system is that it can possibly implement very complicated sets of scripts and external inputs, while being based on a set of standard bitcoin scripts. Another property is that the oracles can possibly replace each ones by forwarding the funds to new [https://bitcoinmagazine.com/11108/multisig-future-bitcoin/ multisig addresses] when they discover that one of the oracles is faulty/corrupted. Finally, such oracles could be used to implement sidechains without dedicated blockchain opcodes.<br />
<br />
===Trust minimization: trusted hardware===<br />
<br />
Using commodity hardware, you can use '''trusted computing''' in the form of Intel TXT or the AMD equivalent (SKINIT) to set up a sealed hardware environment and then use the TPM chip to attest that fact to a third party. That third party can verify the hardware was in the required state. Defeating this requires someone to be able to interfere with the execution of a program that may run entirely on the CPU, even in extreme cases without any data traversing the memory bus (you can run entirely using on-die cache if the program is small enough).<br />
<br />
===Trust minimization: Amazon AWS oracles===<br />
<br />
Finally, perhaps the most practical approach currently is to use Amazon Web Services. As of November 2013, the closest we have to a working oracle is [https://bitcointalk.org/index.php?topic=301538.0 this recipe for creating a trusted computing environment using AWS], built in support of [https://bitcointalk.org/index.php?topic=173220.0 this project for doing selective SSL logging and decryption]. The idea is that an oracle, which can be proven trustworthy using the Amazon APIs with Amazon as the root of trust, records encrypted SSL sessions to an online banking interface in such a way that later if there is a dispute about a person-to-person exchange, the logs can be decrypted and the dispute settled.<br />
<br />
<br />
==Example 5: Trading across chains==<br />
<br />
The Bitcoin technology can be adapted to create [[Alternative chain|multiple, independent currencies]]. NameCoin is an example of one such currency that operates under a slightly different set of rules, and can also be used to rent names in a namespace. Currencies that implement the same ideas as Bitcoin can be traded freely against each other with limited trust. <br />
<br />
For example, imagine a consortium of companies that issue EURcoins, a crypto-currency that is backed 1:1 by deposits in the consortium's bank accounts. Such a currency would have a different set of tradeoffs to Bitcoin: more centralized, but without FX risk. People might wish to trade Bitcoins for EURcoins back and forth, with the companies only getting involved when cashing in/out of the regular banking system.<br />
<br />
To implement this, a [https://bitcointalk.org/index.php?topic=193281.msg2224949#msg2224949 protocol proposed by TierNolan] can be used:<br />
<br />
# Party 'A' generates some random data, x (the secret).<br />
# Party 'A' generates Tx1 (the payment) containing an output with the chain-trade script in it. See below for this script and a discussion of it. It allows coin release either by signing with the two keys (key 'A' and key 'B') or with (secret 'x', key 'B'). This transaction is not broadcast. The chain release script contains hashes, not the actual secrets themselves.<br />
# Party 'A' generates Tx2 (the contract), which spends Tx1 and has an output going back to key 'A'. It has a lock time in the future and the input has a sequence number of zero, so it can be replaced. 'A' signs Tx2 and sends it to 'B', who also signs it and sends it back.<br />
# 'A' broadcasts Tx1 and Tx2. Party 'B' can now see the coins but cannot spend them because it does not have an output going to him, and the tx is not finalized anyway.<br />
# 'B' performs the same scheme in reverse on the alternative chain. The lock time for 'B' should be much larger than the lock time for 'A'. Both sides of the trade are now pending but incomplete.<br />
# Since 'A' knows the secret, 'A' can claim his coins immediately. However, 'A', in the process of claiming his coin, reveals the secret 'x' to 'B', who then uses it to finish the other side of the trade with ('x', key 'B').<br />
<br />
This protocol makes it feasible to do trades automatically in an entirely peer-to-peer manner, which should ensure good liquidity.<br />
<br />
The chain-trade script could look like this:<br />
<br />
IF <br />
2 <key A> <key B> 2 CHECKMULTISIGVERIFY<br />
ELSE<br />
<key B> CHECKSIGVERIFY SHA256 <hash of secret x> EQUALVERIFY<br />
ENDIF<br />
<br />
The contract input script looks like either:<br />
<br />
<sig A> <sig B> 1<br />
<br />
or<br />
<br />
<secret x> <sig B> 0<br />
<br />
i.e., the first data element selects which phase is being used.<br />
<br />
See [[Atomic cross-chain trading]] for details.<br />
<br />
Note that whilst EURcoins is a natural idea, there are other ways to implement peer-to-peer currency exchange (Bitcoin to fiat and vice versa), see the [[Ripple currency exchange]] article for more information.<br />
<br />
Sergio Demian-Lerner proposed [https://bitcointalk.org/index.php?topic=91843.0 P2PTradeX], a solution requiring the validation rules for one blockchain to be effectively encoded into the validation rules for the other.<br />
<br />
==Example 6: Pay-for-proof contracts: buying a solution to any pure function==<br />
<br />
In example 4, we saw how to make payments conditional on the output of some arbitrary program. Those programs are very powerful and can do anything a regular program can do, like fetching web pages. The downside is that a third party is required (an oracle). Although there are techniques that can help reduce the trust needed in the oracle, none can reduce it to zero.<br />
<br />
For a restricted class of programs, pure functions, new cryptographic techniques are starting to become available that can actually reduce the trust needed all the way to zero with no third parties. These programs cannot perform any I/O, but in many cases this restriction turns out to be unimportant or can be worked around in other ways, like by giving the program a signed/timestamped document as an input instead of having the program download it.<br />
<br />
Gregory Maxwell has invented a protocol for doing this, which you can read about here: [[Zero Knowledge Contingent Payment]]<br />
<br />
==Example 7: Rapidly-adjusted (micro)payments to a pre-determined party==<br />
<br />
Bitcoin transactions are very cheap relative to traditional payment systems, but still have a cost due to the need for it to be mined and stored. There are some cases in which you want to rapidly and cheaply adjust the amount of money sent to a particular recipient without incurring the cost of a broadcast transaction.<br />
<br />
For example, consider an untrusted internet access point, like a WiFi hotspot in a cafe you never visited before. You'd like to pay 0.001 BTC per 10 kilobytes of usage, without opening an account with the cafe. A zero-trust solution means it could be fully automatic, so you could just pre-allocate a budget on your phone's mobile wallet at the start of the month, and then your device automatically negotiates and pays for internet access on demand. The cafe also wants to allow anyone to pay them without the fear of being ripped off.<br />
<br />
To do this, the following protocol can be used. This protocol relies upon a '''different''' behavior of nLockTime to the original design. Starting around 2013 time-locked transactions were made non standard and no longer enter the memory pool, thus cannot be broadcast before the timelock expires. When the behaviour of nLockTime is restored to the original design from Satoshi, a variant of this protocol is required which is discussed below.<br />
<br />
We define the client to be the party sending value, and the server to be the party receiving it. This is written from the clients perspective.<br />
<br />
# Create a public key (K1). Request a public key from the server (K2). <br />
# Create and sign but do not broadcast a transaction (T1) that sets up a payment of (for example) 10 BTC to an output requiring both the server's private key and one of your own to be used. A good way to do this is use OP_CHECKMULTISIG. The value to be used is chosen as an efficiency tradeoff.<br />
# Create a refund transaction (T2) that is connected to the output of T1 which sends all the money back to yourself. It has a time lock set for some time in the future, for instance a few hours. Don't sign it, and provide the unsigned transaction to the server. By convention, the output script is "2 K1 K2 2 CHECKMULTISIG"<br />
# The server signs T2 using its private key associated with K2 and returns the signature to the client. Note that it has not seen T1 at this point, just the hash (which is in the unsigned T2).<br />
# The client verifies the servers signature is correct and aborts if not.<br />
# The client signs T1 and passes the signature to the server, which now broadcasts the transaction (either party can do this if they both have connectivity). This locks in the money.<br />
# The client then creates a new transaction, T3, which connects to T1 like the refund transaction does and has two outputs. One goes to K1 and the other goes to K2. It starts out with all value allocated to the first output (K1), ie, it does the same thing as the refund transaction but is not time locked. The client signs T3 and provides the transaction and signature to the server.<br />
# The server verifies the output to itself is of the expected size and verifies the client's provided signature is correct.<br />
# When the client wishes to pay the server, it adjusts its copy of T3 to allocate more value to the server's output and less to its own. It then re-signs the new T3 and sends the signature to the server. It does not have to send the whole transaction, just the signature and the amount to increment by is sufficient. The server adjusts its copy of T3 to match the new amounts, verifies the signature and continues.<br />
<br />
This continues until the session ends, or the 1-day period is getting close to expiry. The AP then signs and broadcasts the last transaction it saw, allocating the final amount to itself. The refund transaction is needed to handle the case where the server disappears or halts at any point, leaving the allocated value in limbo. If this happens then once the time lock has expired the client can broadcast the refund transaction and get back all the money.<br />
<br />
This protocol has [https://code.google.com/p/bitcoinj/wiki/WorkingWithMicropayments been implemented in bitcoinj].<br />
<br />
The lock time and sequence numbers avoid an attack in which the AP provides connectivity, and then the user [[double-spending|double-spends]] the output back to themselves using the first version of TX2, thus preventing the cafe from claiming the bill. If the user does try this, the TX won't be included right away, giving the access point a window of time in which it can observe the TX broadcast, and then broadcast the last version it saw, overriding the user's attempted double-spend.<br />
<br />
The latter protocol that relies on transaction replacement is more flexible because it allows the value allocated to go down as well as up during the lifetime of the channel as long as the client receives signatures from the server, but for many use cases this functionality is not required. Replacement also allows for more complex configurations of channels that involve more than two parties. Elaboration on such use cases is a left as an exercise for the reader.<br />
<br />
==Example 8: Multi-party decentralised lotteries==<br />
<br />
Using some of the techniques from example 6 and some very advanced scripting, it becomes possible to build a multi-party lottery with no operator. The exact protocol used is explained in the paper [http://eprint.iacr.org/2013/784 "Secure multiparty computations on Bitcoin"]. A shorter explanation of how it works may be added to this wiki at some point in the future.<br />
<br />
<br />
==See Also==<br />
<br />
* [[Script]]<br />
<br />
[[Category:Technical]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56909Block size limit controversy2015-06-11T03:13:54Z<p>Phantomcircuit: /* Entities positions */</p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for the dual purposes of discouraging economically frivolous transactions from flooding the blockchain and encouraging transactions fees to incentivize miners.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
The fixed blocksize limit cannot be modified without a hard fork.<br />
<br />
Hard forks require adoption by virtually all of the bitcoin participants.<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition to increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* An emergency hard fork can achieve consensus for deployment on a short time period if needed, should blocks become full before Bitcoin has scalability improvements.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
* Fast block propagation is either not clearly viable, or (eg, IBLT) creates centralised controls.<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
Positions below are based on a suggested fixed block size increase to 20MiB. Positions against these larger blocks do not necessarily imply that they are against an increase in general, and may instead support a smaller and/or gradual increase.<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|-<br />
| Bitcoinpaygate<br />
| {{No|No: "We do NOT support the blocksize increase"}}<ref>http://www.reddit.com/r/Bitcoin/comments/37y8wm/list_of_bitcoin_services_that_supportoppose/crqsnqp</ref><br />
|<br />
|-<br />
| Bitrated<br />
| {{No}}<br />"At this time, I oppose increasing the block size limit as per Gavin's proposal" - Nadav Ivgi (founder)<ref>https://twitter.com/shesek/status/605005384026177537</ref><br />
|<br />
|-<br />
| [[F2Pool]]<br />
| {{No|No: "We do support bigger blocks and sooner rather than later. But we cannot handle 20 MB blocks right now. ... I think we can accept 5MB block at most."}}<ref>http://sourceforge.net/p/bitcoin/mailman/message/34157036/],[http://sourceforge.net/p/bitcoin/mailman/message/34158911/</ref><br />
|<br />
|-<br />
| [[GreenAddress]]<br />
| {{No|No: "In our mind increasing the block size like this is just pushing the problem a little further at potentially unfixable costs."}}<ref>http://www.reddit.com/r/Bitcoin/comments/35anax/list_of_bitcoin_services_that_support_increasing/cr2mq84</ref><br />
|<br />
|-<br />
| [[MPEx]]<br />
| {{No}}<ref>http://log.bitcoin-assets.com//?date=07-01-2015#967332</ref><br />
|<br />
|-<br />
| [[Paymium]]<br />
| {{No|No: "<nowiki>[allow]</nowiki> a sane transaction fee market to emerge, by letting the blocks actually fill-up."}} - CTO David Francois<ref>http://fr.anco.is/2015/gavineries/</ref><br />
| <br />
|-<br />
| Ethereum<br /><br />
| {{Neutral|Neutral: "If <nowiki>[the niche of digital gold]</nowiki> is what Bitcoin users want, then they should keep the limit, and perhaps even decrease it. But if Bitcoin users want to be a payment system, then up it must go."}} - Vitalik Buterin (founder)<ref>http://www.reddit.com/r/ethereum/comments/380q61/i_know_this_may_not_directly_be_ethereum_related/crrofl6</ref><br />
|<br />
|-<br />
| [[Armory]]<br />
| {{Yes}}<br />"This *is* urgent and needs to be handled right now, and I believe Gavin<br />
has the best approach to this." - CEO Alan Reiner<ref>http://sourceforge.net/p/bitcoin/mailman/message/34093337/</ref><br />
|<br />
|-<br />
| BitcoinReminder<br />
| {{Yes|Yes: "BitcoinReminder.com also supports 20MB blocks (or even more?"}}<ref>http://www.reddit.com/r/Bitcoin/comments/37y8wm/list_of_bitcoin_services_that_supportoppose/crs9ytd</ref><br />
|<br />
|-<br />
| BitHours<br />
| {{Yes|Yes: "We support @gavinandresen and his proposal for 20mb blocks"}}<ref>https://twitter.com/bithours/status/605131647747358721</ref><br />
|<br />
|-<br />
| [[BitPay]]<br />
| {{Yes}}<br />"Agreed (but optimistic this will be the last and only time block size needs to increase)" - CEO Stephen Pair<ref>https://twitter.com/spair/status/595341090317799424</ref><br />
| <br />
|-<br />
| Bittiraha.fi<br />
| {{Yes|Yes: "We are supporting increasing #Bitcoin max block size to 20MB."}}<ref>https://twitter.com/Bittirahafi/status/596682373028311040</ref><br />"I'm strongly in favor of the block size cap increase to 20MB." - CEO Henry Brade<ref>https://twitter.com/Technom4ge/status/596334370803326978</ref><br />
| {{Yes}}<br />"And I'm in favor of releasing a version with this change even with opposition." - CEO Henry Brade<ref>https://twitter.com/Technom4ge/status/596334370803326978</ref><br />
|-<br />
| [[Blockchain.info]]<br />
|{{Yes}}<br />"It is time to increase the block size. Agree with @gavinandresen" - CEO Peter Smith<ref>https://twitter.com/OneMorePeter/status/595676380320407553</ref><br />"Scaling #bitcoin is a big deal. Increase the block size." - Nic Cary<ref>https://twitter.com/niccary/status/595707211994763264</ref><br />
|<br />
|-<br />
| Breadwallet<br />
| {{Yes}}<br />"[...] in support of the Gavin's 20Mb block proposal." - CEO Aaron Voisine<ref>http://sourceforge.net/p/bitcoin/mailman/message/34096857/</ref><br />
|<br />
|-<br />
| [[BTC Guild]]<br />
| {{Yes}}<br />"Needs to happen, but needs future expansion built in at a reasonable rate." - Eleuthria<ref>https://www.reddit.com/r/Bitcoin/comments/370rko/21_inc_engineer_everyone_assumes_humans_will_be/crjfnpg?context=3</ref><br />
|<br />
|-<br />
| BX.in.th<br />
| {{Yes|Yes: "<nowiki>http://BX.in.th</nowiki> will support the 20MB block size"}}<ref>https://twitter.com/BitcoinThai/status/605022509101023232</ref><br />
| <br />
|- <br />
| [[Coinbase (business)|CoinBase]]<br />
| {{Yes|Yes: "Coinbase supports increasing the maximum block size"}}<ref>https://twitter.com/coinbase/status/595741967759335426</ref><br />"Why we should increase the block size" - CEO Brian Armstrong<ref>https://twitter.com/brian_armstrong/status/595453245884997634</ref><br />
|<br />
|-<br />
| Kryptoradio<br />
| {{Yes}}<br />"#Kryptoradio dev @zouppen supports 20MB block size in #bitcoin." - Joel Lehtonen<ref>https://twitter.com/koodilehto/status/596675967667568641</ref><br />
|<br />
|- <br />
| OKCoin<br />
| {{Yes|Yes: "OKCoin's tech team believes it's the right decision"}}<ref>https://twitter.com/okcoinbtc/status/598412795240009728</ref><br />
|<br />
|-<br />
| Third Key Solutions<br />
| {{Yes}}<br />"Gavin is right. The time to increase the block size limit is before transaction processing shows congestion problems." - CTO Andreas Antonopoulos<ref>https://twitter.com/aantonop/status/595601619581964289</ref><br />
|<br />
|-<br />
| Xapo<br />
| {{Yes|Yes: "One meg is not enough: Xapo supports increasing the maximum block size"}} - CEO Wences Casares<ref>https://twitter.com/wences/status/595768917907402752</ref><br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56908Block size limit controversy2015-06-11T03:10:59Z<p>Phantomcircuit: /* Entities positions */</p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for the dual purposes of discouraging economically frivolous transactions from flooding the blockchain and encouraging transactions fees to incentivize miners.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
The fixed blocksize limit cannot be modified without a hard fork.<br />
<br />
Hard forks require adoption by virtually all of the bitcoin participants.<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition to increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* An emergency hard fork can achieve consensus for deployment on a short time period if needed, should blocks become full before Bitcoin has scalability improvements.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
* Fast block propagation is either not clearly viable, or (eg, IBLT) creates centralised controls.<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
Positions below are based on a suggested fixed block size increase to 20MiB. Positions against these larger blocks do not necessarily imply that they are against an increase in general, and may instead support a smaller and/or gradual increase.<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|-<br />
| [[Armory]]<br />
| {{Yes}}<br />"This *is* urgent and needs to be handled right now, and I believe Gavin<br />
has the best approach to this." - CEO Alan Reiner<ref>http://sourceforge.net/p/bitcoin/mailman/message/34093337/</ref><br />
|<br />
|-<br />
| Bitcoinpaygate<br />
| {{No|No: "We do NOT support the blocksize increase"}}<ref>http://www.reddit.com/r/Bitcoin/comments/37y8wm/list_of_bitcoin_services_that_supportoppose/crqsnqp</ref><br />
|<br />
|-<br />
| BitcoinReminder<br />
| {{Yes|Yes: "BitcoinReminder.com also supports 20MB blocks (or even more?"}}<ref>http://www.reddit.com/r/Bitcoin/comments/37y8wm/list_of_bitcoin_services_that_supportoppose/crs9ytd</ref><br />
|<br />
|-<br />
| BitHours<br />
| {{Yes|Yes: "We support @gavinandresen and his proposal for 20mb blocks"}}<ref>https://twitter.com/bithours/status/605131647747358721</ref><br />
|<br />
|-<br />
| [[BitPay]]<br />
| {{Yes}}<br />"Agreed (but optimistic this will be the last and only time block size needs to increase)" - CEO Stephen Pair<ref>https://twitter.com/spair/status/595341090317799424</ref><br />
| <br />
|-<br />
| Bitrated<br />
| {{No}}<br />"At this time, I oppose increasing the block size limit as per Gavin's proposal" - Nadav Ivgi (founder)<ref>https://twitter.com/shesek/status/605005384026177537</ref><br />
|<br />
|-<br />
| Bittiraha.fi<br />
| {{Yes|Yes: "We are supporting increasing #Bitcoin max block size to 20MB."}}<ref>https://twitter.com/Bittirahafi/status/596682373028311040</ref><br />"I'm strongly in favor of the block size cap increase to 20MB." - CEO Henry Brade<ref>https://twitter.com/Technom4ge/status/596334370803326978</ref><br />
| {{Yes}}<br />"And I'm in favor of releasing a version with this change even with opposition." - CEO Henry Brade<ref>https://twitter.com/Technom4ge/status/596334370803326978</ref><br />
|-<br />
| [[Blockchain.info]]<br />
|{{Yes}}<br />"It is time to increase the block size. Agree with @gavinandresen" - CEO Peter Smith<ref>https://twitter.com/OneMorePeter/status/595676380320407553</ref><br />"Scaling #bitcoin is a big deal. Increase the block size." - Nic Cary<ref>https://twitter.com/niccary/status/595707211994763264</ref><br />
|<br />
|-<br />
| Breadwallet<br />
| {{Yes}}<br />"[...] in support of the Gavin's 20Mb block proposal." - CEO Aaron Voisine<ref>http://sourceforge.net/p/bitcoin/mailman/message/34096857/</ref><br />
|<br />
|-<br />
| [[BTC Guild]]<br />
| {{Yes}}<br />"Needs to happen, but needs future expansion built in at a reasonable rate." - Eleuthria<ref>https://www.reddit.com/r/Bitcoin/comments/370rko/21_inc_engineer_everyone_assumes_humans_will_be/crjfnpg?context=3</ref><br />
|<br />
|-<br />
| BX.in.th<br />
| {{Yes|Yes: "<nowiki>http://BX.in.th</nowiki> will support the 20MB block size"}}<ref>https://twitter.com/BitcoinThai/status/605022509101023232</ref><br />
| <br />
|- <br />
| [[Coinbase (business)|CoinBase]]<br />
|{{Yes|Yes: "Coinbase supports increasing the maximum block size"}}<ref>https://twitter.com/coinbase/status/595741967759335426</ref><br />"Why we should increase the block size" - CEO Brian Armstrong<ref>https://twitter.com/brian_armstrong/status/595453245884997634</ref><br />
|<br />
|-<br />
| Ethereum<br /><br />
| {{Neutral|Neutral: "If <nowiki>[the niche of digital gold]</nowiki> is what Bitcoin users want, then they should keep the limit, and perhaps even decrease it. But if Bitcoin users want to be a payment system, then up it must go."}} - Vitalik Buterin (founder)<ref>http://www.reddit.com/r/ethereum/comments/380q61/i_know_this_may_not_directly_be_ethereum_related/crrofl6</ref><br />
|<br />
|-<br />
| [[F2Pool]]<br />
| {{No|No: "We do support bigger blocks and sooner rather than later. But we cannot handle 20 MB blocks right now. ... I think we can accept 5MB block at most."}}<ref>http://sourceforge.net/p/bitcoin/mailman/message/34157036/],[http://sourceforge.net/p/bitcoin/mailman/message/34158911/</ref><br />
|<br />
|-<br />
| [[GreenAddress]]<br />
| {{No|No: "In our mind increasing the block size like this is just pushing the problem a little further at potentially unfixable costs."}}<ref>http://www.reddit.com/r/Bitcoin/comments/35anax/list_of_bitcoin_services_that_support_increasing/cr2mq84</ref><br />
|<br />
|-<br />
| Kryptoradio<br />
| {{Yes}}<br />"#Kryptoradio dev @zouppen supports 20MB block size in #bitcoin." - Joel Lehtonen<ref>https://twitter.com/koodilehto/status/596675967667568641</ref><br />
|<br />
|- <br />
| [[MPEx]]<br />
| {{No}}<ref>http://log.bitcoin-assets.com//?date=07-01-2015#967332</ref><br />
|<br />
|-<br />
| OKCoin<br />
| {{Yes|Yes: "OKCoin's tech team believes it's the right decision"}}<ref>https://twitter.com/okcoinbtc/status/598412795240009728</ref><br />
|<br />
|-<br />
| [[Paymium]]<br />
| {{No|No: "<nowiki>[allow]</nowiki> a sane transaction fee market to emerge, by letting the blocks actually fill-up."}} - CTO David Francois<ref>http://fr.anco.is/2015/gavineries/</ref><br />
| <br />
|-<br />
| Third Key Solutions<br />
| {{Yes}}<br />"Gavin is right. The time to increase the block size limit is before transaction processing shows congestion problems." - CTO Andreas Antonopoulos<ref>https://twitter.com/aantonop/status/595601619581964289</ref><br />
|<br />
|-<br />
| Xapo<br />
| {{Yes|Yes: "One meg is not enough: Xapo supports increasing the maximum block size"}} - CEO Wences Casares<ref>https://twitter.com/wences/status/595768917907402752</ref><br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56907Block size limit controversy2015-06-11T03:08:03Z<p>Phantomcircuit: </p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for the dual purposes of discouraging economically frivolous transactions from flooding the blockchain and encouraging transactions fees to incentivize miners.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
The fixed blocksize limit cannot be modified without a hard fork.<br />
<br />
Hard forks require adoption by virtually all of the bitcoin participants.<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition to increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* An emergency hard fork can achieve consensus for deployment on a short time period if needed, should blocks become full before Bitcoin has scalability improvements.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
* Fast block propagation is either not clearly viable, or (eg, IBLT) creates centralised controls.<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
Positions below are based on a suggested fixed block size increase to 20MiB. Positions against these larger blocks do not necessarily imply that they are against an increase in general, and may instead support a smaller and/or gradual increase.<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|-<br />
| [[Armory]]<br />
| {{Yes}}<br />"This *is* urgent and needs to be handled right now, and I believe Gavin<br />
has the best approach to this." - CEO Alan Reiner<ref>http://sourceforge.net/p/bitcoin/mailman/message/34093337/</ref><br />
|<br />
|-<br />
| Bitcoinpaygate<br />
| {{No|No: "We do NOT support the blocksize increase"}}<ref>http://www.reddit.com/r/Bitcoin/comments/37y8wm/list_of_bitcoin_services_that_supportoppose/crqsnqp</ref><br />
|<br />
|-<br />
| BitcoinReminder<br />
| {{Yes|Yes: "BitcoinReminder.com also supports 20MB blocks (or even more?"}}<ref>http://www.reddit.com/r/Bitcoin/comments/37y8wm/list_of_bitcoin_services_that_supportoppose/crs9ytd</ref><br />
|<br />
|-<br />
| BitHours<br />
| {{Yes|Yes: "We support @gavinandresen and his proposal for 20mb blocks"}}<ref>https://twitter.com/bithours/status/605131647747358721</ref><br />
|<br />
|-<br />
| [[BitPay]]<br />
| {{Yes}}<br />"Agreed (but optimistic this will be the last and only time block size needs to increase)" - CEO Stephen Pair<ref>https://twitter.com/spair/status/595341090317799424</ref><br />
| <br />
|-<br />
| Bitrated<br />
| {{No}}<br />"At this time, I oppose increasing the block size limit as per Gavin's proposal" - Nadav Ivgi (founder)<ref>https://twitter.com/shesek/status/605005384026177537</ref><br />
|<br />
|-<br />
| Bittiraha.fi<br />
| {{Yes|Yes: "We are supporting increasing #Bitcoin max block size to 20MB."}}<ref>https://twitter.com/Bittirahafi/status/596682373028311040</ref><br />"I'm strongly in favor of the block size cap increase to 20MB." - CEO Henry Brade<ref>https://twitter.com/Technom4ge/status/596334370803326978</ref><br />
| {{Yes}}<br />"And I'm in favor of releasing a version with this change even with opposition." - CEO Henry Brade<ref>https://twitter.com/Technom4ge/status/596334370803326978</ref><br />
|-<br />
| [[Blockchain.info]]<br />
|{{Yes}}<br />"It is time to increase the block size. Agree with @gavinandresen" - CEO Peter Smith<ref>https://twitter.com/OneMorePeter/status/595676380320407553</ref><br />"Scaling #bitcoin is a big deal. Increase the block size." - Nic Cary<ref>https://twitter.com/niccary/status/595707211994763264</ref><br />
|<br />
|-<br />
| Breadwallet<br />
| {{Yes}}<br />"[...] in support of the Gavin's 20Mb block proposal." - CEO Aaron Voisine<ref>http://sourceforge.net/p/bitcoin/mailman/message/34096857/</ref><br />
|<br />
|-<br />
| [[BTC Guild]]<br />
| {{Yes}}<br />"Needs to happen, but needs future expansion built in at a reasonable rate." - Eleuthria<ref>https://www.reddit.com/r/Bitcoin/comments/370rko/21_inc_engineer_everyone_assumes_humans_will_be/crjfnpg?context=3</ref><br />
|<br />
|-<br />
| BX.in.th<br />
| {{Yes|Yes: "<nowiki>http://BX.in.th</nowiki> will support the 20MB block size"}}<ref>https://twitter.com/BitcoinThai/status/605022509101023232</ref><br />
| <br />
|- <br />
| [[Coinbase (business)|CoinBase]]<br />
|{{Yes|Yes: "Coinbase supports increasing the maximum block size"}}<ref>https://twitter.com/coinbase/status/595741967759335426</ref><br />"Why we should increase the block size" - CEO Brian Armstrong<ref>https://twitter.com/brian_armstrong/status/595453245884997634</ref><br />
|<br />
|-<br />
| Ethereum<br /><br />
| {{Neutral|Neutral: "If <nowiki>[the niche of digital gold]</nowiki> is what Bitcoin users want, then they should keep the limit, and perhaps even decrease it. But if Bitcoin users want to be a payment system, then up it must go."}} - Vitalik Buterin (founder)<ref>http://www.reddit.com/r/ethereum/comments/380q61/i_know_this_may_not_directly_be_ethereum_related/crrofl6</ref><br />
|<br />
|-<br />
| [[F2Pool]]<br />
| {{No|No: "We do support bigger blocks and sooner rather than later. But we cannot handle 20 MB blocks right now. ... I think we can accept 5MB block at most."}}<ref>http://sourceforge.net/p/bitcoin/mailman/message/34157036/],[http://sourceforge.net/p/bitcoin/mailman/message/34158911/</ref><br />
|<br />
|-<br />
| [[GreenAddress]]<br />
| {{No|No: "In our mind increasing the block size like this is just pushing the problem a little further at potentially unfixable costs."}}<ref>http://www.reddit.com/r/Bitcoin/comments/35anax/list_of_bitcoin_services_that_support_increasing/cr2mq84</ref><br />
|<br />
|-<br />
| Kryptoradio<br />
| {{Yes}}<br />"#Kryptoradio dev @zouppen supports 20MB block size in #bitcoin." - Joel Lehtonen<ref>https://twitter.com/koodilehto/status/596675967667568641</ref><br />
|<br />
|- <br />
| [[MPEx]]<br />
| {{No}}{{citation needed}}<br />
|<br />
|-<br />
| OKCoin<br />
| {{Yes|Yes: "OKCoin's tech team believes it's the right decision"}}<ref>https://twitter.com/okcoinbtc/status/598412795240009728</ref><br />
|<br />
|-<br />
| [[Paymium]]<br />
| {{No|No: "<nowiki>[allow]</nowiki> a sane transaction fee market to emerge, by letting the blocks actually fill-up."}} - CTO David Francois<ref>http://fr.anco.is/2015/gavineries/</ref><br />
| <br />
|-<br />
| Third Key Solutions<br />
| {{Yes}}<br />"Gavin is right. The time to increase the block size limit is before transaction processing shows congestion problems." - CTO Andreas Antonopoulos<ref>https://twitter.com/aantonop/status/595601619581964289</ref><br />
|<br />
|-<br />
| Xapo<br />
| {{Yes|Yes: "One meg is not enough: Xapo supports increasing the maximum block size"}} - CEO Wences Casares<ref>https://twitter.com/wences/status/595768917907402752</ref><br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56906Block size limit controversy2015-06-11T03:07:19Z<p>Phantomcircuit: </p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for the dual purposes of discouraging economically frivolous transactions from flooding the blockchain and encouraging transactions fees to incentivize miners.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
The fixed blocksize limit cannot be modified without a hard fork.<br />
<br />
Hard forks require adoption by virtually all of the bitcoin participants.<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition to increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* An emergency hard fork can achieve consensus for deployment on a short time period if needed, should blocks become full before Bitcoin has scalability improvements.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
* Fast block propagation is either not clearly viable, or (eg, IBLT) creates centralised controls.<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
Positions below are based on a suggested fixed block size increase to 20MiB. Positions against these larger blocks do not necessarily imply that they are against an increase in general, and may instead support a smaller and/or gradual increase.<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|-<br />
| [[Armory]]<br />
| {{Yes}}<br />"This *is* urgent and needs to be handled right now, and I believe Gavin<br />
has the best approach to this." - CEO Alan Reiner<ref>[http://sourceforge.net/p/bitcoin/mailman/message/34093337/</ref><br />
|<br />
|-<br />
| Bitcoinpaygate<br />
| {{No|No: "We do NOT support the blocksize increase"}}<ref>http://www.reddit.com/r/Bitcoin/comments/37y8wm/list_of_bitcoin_services_that_supportoppose/crqsnqp</sup><br />
|<br />
|-<br />
| BitcoinReminder<br />
| {{Yes|Yes: "BitcoinReminder.com also supports 20MB blocks (or even more?"}}<ref>http://www.reddit.com/r/Bitcoin/comments/37y8wm/list_of_bitcoin_services_that_supportoppose/crs9ytd</ref><br />
|<br />
|-<br />
| BitHours<br />
| {{Yes|Yes: "We support @gavinandresen and his proposal for 20mb blocks"}}<ref>https://twitter.com/bithours/status/605131647747358721</ref><br />
|<br />
|-<br />
| [[BitPay]]<br />
| {{Yes}}<br />"Agreed (but optimistic this will be the last and only time block size needs to increase)" - CEO Stephen Pair<ref>https://twitter.com/spair/status/595341090317799424</ref><br />
| <br />
|-<br />
| Bitrated<br />
| {{No}}<br />"At this time, I oppose increasing the block size limit as per Gavin's proposal" - Nadav Ivgi (founder)<ref>https://twitter.com/shesek/status/605005384026177537</ref><br />
|<br />
|-<br />
| Bittiraha.fi<br />
| {{Yes|Yes: "We are supporting increasing #Bitcoin max block size to 20MB."}}<ref>https://twitter.com/Bittirahafi/status/596682373028311040</ref><br />"I'm strongly in favor of the block size cap increase to 20MB." - CEO Henry Brade<ref>https://twitter.com/Technom4ge/status/596334370803326978</ref><br />
| {{Yes}}<br />"And I'm in favor of releasing a version with this change even with opposition." - CEO Henry Brade<ref>https://twitter.com/Technom4ge/status/596334370803326978</ref><br />
|-<br />
| [[Blockchain.info]]<br />
|{{Yes}}<br />"It is time to increase the block size. Agree with @gavinandresen" - CEO Peter Smith<ref>https://twitter.com/OneMorePeter/status/595676380320407553</ref><br />"Scaling #bitcoin is a big deal. Increase the block size." - Nic Cary<ref>https://twitter.com/niccary/status/595707211994763264</ref><br />
|<br />
|-<br />
| Breadwallet<br />
| {{Yes}}<br />"[...] in support of the Gavin's 20Mb block proposal." - CEO Aaron Voisine<ref>http://sourceforge.net/p/bitcoin/mailman/message/34096857/</ref><br />
|<br />
|-<br />
| [[BTC Guild]]<br />
| {{Yes}}<br />"Needs to happen, but needs future expansion built in at a reasonable rate." - Eleuthria<ref>https://www.reddit.com/r/Bitcoin/comments/370rko/21_inc_engineer_everyone_assumes_humans_will_be/crjfnpg?context=3</ref><br />
|<br />
|-<br />
| BX.in.th<br />
| {{Yes|Yes: "<nowiki>http://BX.in.th</nowiki> will support the 20MB block size"}}<ref>https://twitter.com/BitcoinThai/status/605022509101023232</ref><br />
| <br />
|- <br />
| [[Coinbase (business)|CoinBase]]<br />
|{{Yes|Yes: "Coinbase supports increasing the maximum block size"}}<ref>https://twitter.com/coinbase/status/595741967759335426</ref><br />"Why we should increase the block size" - CEO Brian Armstrong<ref>https://twitter.com/brian_armstrong/status/595453245884997634</ref><br />
|<br />
|-<br />
| Ethereum<br /><br />
| {{Neutral|Neutral: "If <nowiki>[the niche of digital gold]</nowiki> is what Bitcoin users want, then they should keep the limit, and perhaps even decrease it. But if Bitcoin users want to be a payment system, then up it must go."}} - Vitalik Buterin (founder)<ref>http://www.reddit.com/r/ethereum/comments/380q61/i_know_this_may_not_directly_be_ethereum_related/crrofl6</ref><br />
|<br />
|-<br />
| [[F2Pool]]<br />
| {{No|No: "We do support bigger blocks and sooner rather than later. But we cannot handle 20 MB blocks right now. ... I think we can accept 5MB block at most."}}<ref>http://sourceforge.net/p/bitcoin/mailman/message/34157036/],[http://sourceforge.net/p/bitcoin/mailman/message/34158911/</ref><br />
|<br />
|-<br />
| [[GreenAddress]]<br />
| {{No|No: "In our mind increasing the block size like this is just pushing the problem a little further at potentially unfixable costs."}}<ref>http://www.reddit.com/r/Bitcoin/comments/35anax/list_of_bitcoin_services_that_support_increasing/cr2mq84</ref><br />
|<br />
|-<br />
| Kryptoradio<br />
| {{Yes}}<br />"#Kryptoradio dev @zouppen supports 20MB block size in #bitcoin." - Joel Lehtonen<ref>https://twitter.com/koodilehto/status/596675967667568641</ref><br />
|<br />
|- <br />
| [[MPEx]]<br />
| {{No}}{{citation needed}}<br />
|<br />
|-<br />
| OKCoin<br />
| {{Yes|Yes: "OKCoin's tech team believes it's the right decision"}}<ref>https://twitter.com/okcoinbtc/status/598412795240009728</ref><br />
|<br />
|-<br />
| [[Paymium]]<br />
| {{No|No: "<nowiki>[allow]</nowiki> a sane transaction fee market to emerge, by letting the blocks actually fill-up."}} - CTO David Francois<ref>http://fr.anco.is/2015/gavineries/</ref><br />
| <br />
|-<br />
| Third Key Solutions<br />
| {{Yes}}<br />"Gavin is right. The time to increase the block size limit is before transaction processing shows congestion problems." - CTO Andreas Antonopoulos<ref>https://twitter.com/aantonop/status/595601619581964289</ref><br />
|<br />
|-<br />
| Xapo<br />
| {{Yes|Yes: "One meg is not enough: Xapo supports increasing the maximum block size"}} - CEO Wences Casares<ref>https://twitter.com/wences/status/595768917907402752</ref><br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56905Block size limit controversy2015-06-11T03:02:54Z<p>Phantomcircuit: Not true anymore!</p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for the dual purposes of discouraging economically frivolous transactions from flooding the blockchain and encouraging transactions fees to incentivize miners.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
The fixed blocksize limit cannot be modified without a hard fork.<br />
<br />
Hard forks require adoption by virtually all of the bitcoin participants.<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition to increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* An emergency hard fork can achieve consensus for deployment on a short time period if needed, should blocks become full before Bitcoin has scalability improvements.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
* Fast block propagation is either not clearly viable, or (eg, IBLT) creates centralised controls.<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
Positions below are based on a suggested fixed block size increase to 20MiB. Positions against these larger blocks do not necessarily imply that they are against an increase in general, and may instead support a smaller and/or gradual increase.<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|-<br />
| [[Armory]]<br />
| {{Yes}}<br />"This *is* urgent and needs to be handled right now, and I believe Gavin<br />
has the best approach to this." - CEO Alan Reiner<sup>[http://sourceforge.net/p/bitcoin/mailman/message/34093337/]</sup><br />
|<br />
|-<br />
| Bitcoinpaygate<br />
| {{No|No: "We do NOT support the blocksize increase"}}<sup>[http://www.reddit.com/r/Bitcoin/comments/37y8wm/list_of_bitcoin_services_that_supportoppose/crqsnqp]</sup><br />
|<br />
|-<br />
| BitcoinReminder<br />
| {{Yes|Yes: "BitcoinReminder.com also supports 20MB blocks (or even more?"}}<sup>[http://www.reddit.com/r/Bitcoin/comments/37y8wm/list_of_bitcoin_services_that_supportoppose/crs9ytd]</sup><br />
|<br />
|-<br />
| BitHours<br />
| {{Yes|Yes: "We support @gavinandresen and his proposal for 20mb blocks"}}<sup>[https://twitter.com/bithours/status/605131647747358721]</sup><br />
|<br />
|-<br />
| [[BitPay]]<br />
| {{Yes}}<br />"Agreed (but optimistic this will be the last and only time block size needs to increase)" - CEO Stephen Pair<sup>[https://twitter.com/spair/status/595341090317799424]</sup><br />
| <br />
|-<br />
| Bitrated<br />
| {{No}}<br />"At this time, I oppose increasing the block size limit as per Gavin's proposal" - Nadav Ivgi (founder)<sup>[https://twitter.com/shesek/status/605005384026177537]</sup><br />
|<br />
|-<br />
| Bittiraha.fi<br />
| {{Yes|Yes: "We are supporting increasing #Bitcoin max block size to 20MB."}}<sup>[https://twitter.com/Bittirahafi/status/596682373028311040]</sup><br />"I'm strongly in favor of the block size cap increase to 20MB." - CEO Henry Brade<sup>[https://twitter.com/Technom4ge/status/596334370803326978]</sup><br />
| {{Yes}}<br />"And I'm in favor of releasing a version with this change even with opposition." - CEO Henry Brade<sup>[https://twitter.com/Technom4ge/status/596334370803326978]</sup><br />
|-<br />
| [[Blockchain.info]]<br />
|{{Yes}}<br />"It is time to increase the block size. Agree with @gavinandresen" - CEO Peter Smith<sup>[https://twitter.com/OneMorePeter/status/595676380320407553]</sup><br />"Scaling #bitcoin is a big deal. Increase the block size." - Nic Cary<sup>[https://twitter.com/niccary/status/595707211994763264]</sup><br />
|<br />
|-<br />
| Breadwallet<br />
| {{Yes}}<br />"[...] in support of the Gavin's 20Mb block proposal." - CEO Aaron Voisine<sup>[http://sourceforge.net/p/bitcoin/mailman/message/34096857/]</sup><br />
|<br />
|-<br />
| [[BTC Guild]]<br />
| {{Yes}}<br />"Needs to happen, but needs future expansion built in at a reasonable rate." - Eleuthria<sup>[https://www.reddit.com/r/Bitcoin/comments/370rko/21_inc_engineer_everyone_assumes_humans_will_be/crjfnpg?context=3]</sup><br />
|<br />
|-<br />
| BX.in.th<br />
| {{Yes|Yes: "<nowiki>http://BX.in.th</nowiki> will support the 20MB block size"}}<sup>[https://twitter.com/BitcoinThai/status/605022509101023232]</sup><br />
| <br />
|- <br />
| [[Coinbase (business)|CoinBase]]<br />
|{{Yes|Yes: "Coinbase supports increasing the maximum block size"}}<sup>[https://twitter.com/coinbase/status/595741967759335426]</sup><br />"Why we should increase the block size" - CEO Brian Armstrong<sup>[https://twitter.com/brian_armstrong/status/595453245884997634]</sup><br />
|<br />
|-<br />
| Ethereum<br /><br />
| {{Neutral|Neutral: "If <nowiki>[the niche of digital gold]</nowiki> is what Bitcoin users want, then they should keep the limit, and perhaps even decrease it. But if Bitcoin users want to be a payment system, then up it must go."}} - Vitalik Buterin (founder)<sup>[http://www.reddit.com/r/ethereum/comments/380q61/i_know_this_may_not_directly_be_ethereum_related/crrofl6]</sup><br />
|<br />
|-<br />
| [[F2Pool]]<br />
| {{No|No: "We do support bigger blocks and sooner rather than later. But we cannot handle 20 MB blocks right now. ... I think we can accept 5MB block at most."}}<sup>[http://sourceforge.net/p/bitcoin/mailman/message/34157036/],[http://sourceforge.net/p/bitcoin/mailman/message/34158911/]</sup><br />
|<br />
|-<br />
| [[GreenAddress]]<br />
| {{No|No: "In our mind increasing the block size like this is just pushing the problem a little further at potentially unfixable costs."}}<sup>[http://www.reddit.com/r/Bitcoin/comments/35anax/list_of_bitcoin_services_that_support_increasing/cr2mq84]</sup><br />
|<br />
|-<br />
| Kryptoradio<br />
| {{Yes}}<br />"#Kryptoradio dev @zouppen supports 20MB block size in #bitcoin." - Joel Lehtonen<sup>[https://twitter.com/koodilehto/status/596675967667568641]</sup><br />
|<br />
|- <br />
| [[MPEx]]<br />
| {{No}}{{citation needed}}<br />
|<br />
|-<br />
| OKCoin<br />
| {{Yes|Yes: "OKCoin's tech team believes it's the right decision"}}<sup>[https://twitter.com/okcoinbtc/status/598412795240009728]</sup><br />
|<br />
|-<br />
| [[Paymium]]<br />
| {{No|No: "<nowiki>[allow]</nowiki> a sane transaction fee market to emerge, by letting the blocks actually fill-up."}} - CTO David Francois<sup>[http://fr.anco.is/2015/gavineries/]</sup><br />
| <br />
|-<br />
| Third Key Solutions<br />
| {{Yes}}<br />"Gavin is right. The time to increase the block size limit is before transaction processing shows congestion problems." - CTO Andreas Antonopoulos<sup>[https://twitter.com/aantonop/status/595601619581964289]</sup><br />
|<br />
|-<br />
| Xapo<br />
| {{Yes|Yes: "One meg is not enough: Xapo supports increasing the maximum block size"}} - CEO Wences Casares<sup>[https://twitter.com/wences/status/595768917907402752]</sup><br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56822Block size limit controversy2015-06-02T07:30:33Z<p>Phantomcircuit: </p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for the dual purposes of discouraging economically frivolous transactions from flooding the blockchain and encouraging transactions fees to incentivize miners.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
The fixed blocksize limit cannot be modified without a hard fork.<br />
<br />
Hard forks require adoption by virtually all of the bitcoin participants.<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
* Sidechains and Lightning do not exist.<br />
<br />
== Arguments in opposition to increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56821Block size limit controversy2015-06-02T06:52:34Z<p>Phantomcircuit: Undo revision 56820 by Phantomcircuit (talk)</p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for the dual purposes of discouraging economically frivolous transactions from flooding the blockchain and encouraging transactions fees to incentivize miners.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
The fixed blocksize limit cannot be modified without a hard fork.<br />
<br />
Hard forks require adoption by virtually all of the bitcoin participants.<br />
<br />
[[Gavin Andresen]] has recently called for all bitcoin users to adopt a hard fork which increases the blocksize to 20MB.<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
* Sidechains and Lightning do not exist.<br />
<br />
== Arguments in opposition to increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56820Block size limit controversy2015-06-02T06:45:48Z<p>Phantomcircuit: /* Arguments in opposition to increasing the blocksize */</p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for the dual purposes of discouraging economically frivolous transactions from flooding the blockchain and encouraging transactions fees to incentivize miners.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
The fixed blocksize limit cannot be modified without a hard fork.<br />
<br />
Hard forks require adoption by virtually all of the bitcoin participants.<br />
<br />
[[Gavin Andresen]] has recently called for all bitcoin users to adopt a hard fork which increases the blocksize to 20MB.<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
* Sidechains and Lightning do not exist.<br />
<br />
== Arguments in opposition to increasing the blocksize ==<br />
'''Hard Fork''' risks<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Risk of years to develop true consensus.<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56819Block size limit controversy2015-06-02T06:40:11Z<p>Phantomcircuit: /* Arguments in opposition of increasing the blocksize */</p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for the dual purposes of discouraging economically frivolous transactions from flooding the blockchain and encouraging transactions fees to incentivize miners.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
The fixed blocksize limit cannot be modified without a hard fork.<br />
<br />
Hard forks require adoption by virtually all of the bitcoin participants.<br />
<br />
[[Gavin Andresen]] has recently called for all bitcoin users to adopt a hard fork which increases the blocksize to 20MB.<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
* Sidechains and Lightning do not exist.<br />
<br />
== Arguments in opposition to increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56818Block size limit controversy2015-06-02T06:35:08Z<p>Phantomcircuit: </p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for the dual purposes of discouraging economically frivolous transactions from flooding the blockchain and encouraging transactions fees to incentivize miners.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
The fixed blocksize limit cannot be modified without a hard fork.<br />
<br />
Hard forks require adoption by virtually all of the bitcoin participants.<br />
<br />
[[Gavin Andresen]] has recently called for all bitcoin users to adopt a hard fork which increases the blocksize to 20MB.<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
* Sidechains and Lightning do not exist.<br />
<br />
== Arguments in opposition of increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56816Block size limit controversy2015-06-02T05:28:31Z<p>Phantomcircuit: </p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for the dual purposes of discouraging economically frivolous transactions from flooding the blockchain and encouraging transactions fees to incentivize miners.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition of increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56815Block size limit controversy2015-06-02T05:21:54Z<p>Phantomcircuit: </p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
<br />
Blocksize limits were put in place for two purposes.<br />
* Discourage economically frivolous transactions from flooding the blockchain.<br />
* Encourage transactions fees which align the incentives of miners with bitcoin users.<br />
<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition of increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56814Block size limit controversy2015-06-02T05:09:51Z<p>Phantomcircuit: </p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than 1MB is invalid.<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition of increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56813Block size limit controversy2015-06-02T05:09:32Z<p>Phantomcircuit: </p>
<hr />
<div>== Introduction ==<br />
<br />
Blocks are limited to 1MB in size. Miners can mine blocks upto the 1MB fixed limit. Any block larger than it is invalid.<br />
{{Quote|Once a predetermined number of coins have entered circulation, the incentive can transition entirely to transaction fees and be completely inflation free.|Satoshi Nakamoto <ref>https://bitcoin.org/bitcoin.pdf</ref>}}<br />
<br />
<br />
== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition of increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56812Block size limit controversy2015-06-02T05:00:18Z<p>Phantomcircuit: </p>
<hr />
<div>== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition of increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56811Block size limit controversy2015-06-02T05:00:07Z<p>Phantomcircuit: </p>
<hr />
<div>== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition of increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
== Damage to decentalization ==<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56810Block size limit controversy2015-06-02T04:59:58Z<p>Phantomcircuit: </p>
<hr />
<div>== Arguments in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Arguments in opposition of increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ==<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
== Entities positions ==<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56809Block size limit controversy2015-06-02T04:59:12Z<p>Phantomcircuit: </p>
<hr />
<div>=== Arguments in favor of increasing the blocksize ===<br />
* Bigger blocks (more transactions per second)<br />
<br />
=== Arguments in opposition of increasing the blocksize ===<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
== Damage to decentalization ==<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
=== Entities positions ===<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56808Block size limit controversy2015-06-02T04:57:04Z<p>Phantomcircuit: /* Argument in opposition of increasing the blocksize */</p>
<hr />
<div>== Argument in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Argument in opposition of increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
* Larger blocks leads to more expensive full nodes.<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56807Block size limit controversy2015-06-02T04:49:37Z<p>Phantomcircuit: No solutions will be available immediately, however sidechains and lightning are technically capable of being delivered immediately, a hard forking blocksize change is not.</p>
<hr />
<div>== Argument in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
<br />
== Argument in opposition of increasing the blocksize ==<br />
* A hard fork requires waiting for sufficient consensus.<br />
* Orphan rate amplification, more reorgs and double-spends due to slower propagation speeds.<br />
* European/American pools at more of a disadvantage compared to the Chinese pools{{why}}<br />
* No amount of max block size would support all the world's future transactions on the main blockchain (various types of off-chain transactions are the only long-term solution)<br />
* Risk of catastrophic consensus failure{{clarification needed}}<br />
<br />
=== Damage to decentalization ===<br />
* Bitcoin is only useful if it is decentralized because centralization requires trust. Bitcoins value proposition is trustlessness.<br />
<br />
* The larger the hash-rate a single miner controls, the more centralized Bitcoin becomes and the more trust using Bitcoin requires.<br />
<br />
* Running your own full node while mining rather than giving another entity the right to your hash-power decreases the hash-rate of large miners. Those who control hash-power are able to control their own hash power if and only if they run a full node.<br />
<br />
* Less individuals who control hash-power will run full nodes if running one becomes more expensive.<br />
<br />
* Larger blocks leads to more expensive full nodes.<br />
<br />
* Therefore, larger blocks lead to less hashers running full nodes, which leads to centralized entities having more power, which makes Bitcoin require more trust, which weakens Bitcoins value proposition.<br />
<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56749Block size limit controversy2015-06-01T01:11:15Z<p>Phantomcircuit: </p>
<hr />
<div>== Argument in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
== Argument in opposition of increasing the blocksize ==<br />
* Risk of catastrophic consensus failure<br />
* Damage to decentalization<br />
<br />
{| class="wikitable sortable"<br />
! Entity<br />
! Supports Larger Blocks<br />
! Supports Hard Fork<br />
|- <br />
| CoinBase<br />
|{{Yes}}<br />
|<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Block_size_limit_controversy&diff=56748Block size limit controversy2015-06-01T01:00:02Z<p>Phantomcircuit: Created page with "== Argument in favor of increasing the blocksize == * Bigger blocks (more transactions per second) == Argument in opposition of increasing the blocksize == * Risk of catastrop..."</p>
<hr />
<div>== Argument in favor of increasing the blocksize ==<br />
* Bigger blocks (more transactions per second)<br />
== Argument in opposition of increasing the blocksize ==<br />
* Risk of catastrophic consensus failure<br />
* Damage to decentalization<br />
<br />
== Entities in favor of hard fork to increase blocksize ==<br />
== Entities in opposition of hard fork to increase blocksize ==</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Enabling_SSL_on_original_client_daemon&diff=56222Enabling SSL on original client daemon2015-04-23T02:19:57Z<p>Phantomcircuit: Replaced content with "JSON-RPC over SSL is strongly discouraged"</p>
<hr />
<div>JSON-RPC over SSL is strongly discouraged</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Mining_software&diff=52150Mining software2014-10-20T09:14:38Z<p>Phantomcircuit: Reverted to version with footnotes.</p>
<hr />
<div>{| class='wikitable'<br />
! colspan='15' | information<br />
|-<br />
! Info !! BFG !! BitMinter !! BTCMiner !! cgminer !! Diablo !! EasyMiner !! gMinor !! GroupFabric !! MPBM !! OSFPGABM !! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| language || C || Scala || Java || C || Java || || Python || C++ || Python || Tcl || Twisted || Python || C++ || Scala<br />
|-<br />
| license || GPL-3 || All rights reserved<br />
| GPL-3 || GPL-3 || GPL-3 || || PD ||Windows Store|| GPL-2+ || GPL-3 || MIT || PD || GPL-3 || GPL-3<br />
|-<br />
| website<br />
| [https://github.com/luke-jr/bfgminer link]<br />
| [https://bitminter.com link]<br />
| [http://www.ztex.de/btcminer/ link]<br />
| [https://github.com/ckolivas/cgminer link]<br />
| [https://github.com/Diablo-D3/DiabloMiner link]<br />
| [http://butterflylabs.com/drivers/ link]<br />
|<br />
| [http://www.groupfabric.com/bitcoin-miner/ link]<br />
| [https://github.com/TheSeven/Modular-Python-Bitcoin-Miner link]<br />
| [https://github.com/progranism/Open-Source-FPGA-Bitcoin-Miner link]<br />
| [https://github.com/phoenix2/phoenix link]<br />
| [https://github.com/m0mchil/poclbm link]<br />
| [http://ufasoft.com/coin/ link]<br />
| [https://github.com/colinrgodsey/scalaminer link]<br />
|-<br />
| forum<br />
| [https://bitcointalk.org/?topic=78192 link]<br />
| [https://bitcointalk.org/?topic=31163 link]<br />
| [https://bitcointalk.org/?topic=40047 link]<br />
| [https://bitcointalk.org/?topic=28402 link]<br />
| [https://bitcointalk.org/?topic=1721 link]<br />
| [https://forums.butterflylabs.com/easyminer-support/ link]<br />
|<br />
| [http://www.groupfabric.com/bitcoin-miner/support/ link]<br />
| [https://bitcointalk.org/?topic=62823 link]<br />
| [https://bitcointalk.org/?topic=9047 link]<br />
| [https://bitcointalk.org/?topic=75786 link]<br />
| [https://bitcointalk.org/?topic=1334 link]<br />
| [https://bitcointalk.org/?topic=3486 link]<br />
|<br />
|-<br />
| related pool || [[Eligius]] || [[BitMinter]] || || [[CKPool]] || || || || || || || || ||<br />
|-<br />
! colspan='15' | operating systems<br />
|-<br />
! OS !! BFG !! BitMinter !! BTCMiner !! cgminer !! Diablo !! EasyMiner !! gMinor !!GroupFabric!! MPBM !! OSFPGABM!! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| Arch ||{{Yes|pkg}} || || ||{{Patch|src,ARM bin}}|| || || || {{No}} || || || || || ||{{Yes|Java}}<br />
|-<br />
| Debian ||{{Yes|pkg}}||{{Yes|Java}}||{{Patch|jar}}||{{Yes|pkg}}<br />
| {{Patch|jar}}||{{No}}||{{Patch|py}}|| {{No}} ||{{Patch|py}}||{{Patch|?}}||{{Patch|py}}||{{Patch|py}}||{{Patch|src}}||{{Yes|Java}}<br />
|-<br />
| Fedora ||{{Yes|pkg}} ||{{Yes|Java}}||{{Patch|jar}}||{{Patch|bin}}||{{Patch|jar}}||{{No}}||{{Patch|py}}||{{No}}||{{Patch|py}}||{{Patch|?}}||{{Patch|py}}||{{Patch|py}}||{{Patch|src}}||{{Yes|Java}}<br />
|-<br />
| Gentoo ||{{Yes|pkg}} ||{{Yes|Java}}||{{Patch|jar}}||{{Yes|pkg}}||{{Patch|jar}}||{{No}}||{{Patch|py}}||{{No}}||{{Patch|py}}||{{Patch|?}}||{{Patch|py}}||{{Patch|py}}||{{Patch|src}}||{{Yes|Java}}<br />
|-<br />
| Mac OS X ||{{Yes|hmbrw}}||{{Yes|Java}}||{{Patch|jar}}||{{Patch|src}}||{{Patch|jar}}||{{No}}||{{Patch|py}}||{{No}}||{{Patch|py}}||{{Patch|?}}||{{Patch|py}}||{{Patch|py}}||{{Patch|src}}||{{Yes|Java}}<br />
|-<br />
| OpenWrt ||{{Yes|pkg}} || || ||{{Patch|bin}}|| || {{No}} || || {{No}} || || || || || ||<br />
|-<br />
| Raspbian ||{{Yes|pkg}}||{{Yes|Java}}||{{Patch|jar}}||{{Patch|bin}}||{{No}}||{{No}}||{{Patch|py}}|| {{No}} ||{{Patch|py}}|| ||{{Patch|py}}||{{Patch|py}}||||{{Yes|Java}}<br />
|-<br />
| Ubuntu ||{{Yes|pkg}} ||{{Yes|Java}}||{{Patch|jar}}||{{Yes|pkg}}||{{Patch|jar}}||{{No}}||{{Patch|py}}||{{No}}||{{Patch|py}}<br />
| {{Patch|?}}||{{Patch|py}}||{{Patch|py}}||{{Patch|src}}||{{Yes|Java}}<br />
|-<br />
| Windows (32-bit) ||{{Yes|zip}} ||{{Yes|Java}}||{{Yes|jar}} ||{{Yes|zip}} || {{Yes|jar}} || {{Yes}} || {{Yes}} || {{Yes}} || || || {{Yes}} || {{Yes}} || {{Yes}}||{{Yes|Java}}<br />
|-<br />
| Windows (64-bit)<ref name="win64">Windows includes (usually installed by default) the [http://en.wikipedia.org/wiki/WoW64 WoW64 subsystem] which enables running 32-bit Windows applications, with low performance impact.</ref><br />
|{{Yes|zip}} ||{{Yes|Java}}||{{Yes|jar}} ||{{Patch|W32<ref name="win64"/>}}<br />
| {{Yes|jar}}|| || || {{Yes}} || || || || || ||{{Yes|Java}}<br />
|-<br />
| Windows RT || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}}<br />
|-<br />
! colspan='15' | mining devices (virtual)<br />
|-<br />
! Virtual device !! BFG !!BitMinter!! BTCMiner!! cgminer !! Diablo !! EasyMiner !! gMinor !!GroupFabric!! MPBM !! OSFPGABM!! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| getwork server ||{{Yes|3.2.0}}||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{Yes}}<br />
|-<br />
| stratum server ||{{Yes|3.3.0}}||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{No}}<br />
|-<br />
! colspan='15' | mining devices (asic)<br />
|-<br />
! Device !!BFG !!BitMinter!! BTCMiner!! cgminer !! Diablo !! EasyMiner !! gMinor !!GroupFabric!! MPBM !! OSFPGABM!! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| AntMiner S1 ||{{No}}||{{No}} ||{{No}}||{{Yes|4.1.0}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| AntMiner S2 ||{{No}}||{{No}} ||{{No}}||{{Yes|4.3.5}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| AntMiner S3 ||{{No}}||{{No}} || {{No}}||{{Patch}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| AntMiner S4 ||{{No}}||{{No}} || {{No}}||{{Patch}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| AntMiner U1/U2 ||{{Yes|3.10.0}}||{{No}}||{{No}}||{{Yes|3.12.0}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes|0.2}}<br />
|-<br />
| Avalon ||{{Yes|3.0.0}}||{{No}} ||{{No}}||{{Yes|2.10.4}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Avalon Gen2/Gen3 ||{{Yes|3.6.0}} ||{{No}} ||{{No}}||{{Yes}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Avalon Nano ||{{No}} ||{{No}} ||{{No}}|| {{Yes}} ||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| BFx2 Bitfury USB || {{Yes|4.0.0}} || {{No}} || {{No}} || {{Yes|4.1.0}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| Bi*Fury ||{{Yes|3.7.0}}|| || {{No}}||{{Yes|3.8.2}}||{{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| BitBurner ||{{No}} ||{{No}} ||{{No}}||{{Yes|3.3.2}}|| {{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| BitForce SC 5 Gh/s ||{{Yes|3.0.0}}||{{Yes|1.4.0}}||{{No}}||{{Yes|3.1.0}}||{{No}}|| || {{No}} ||{{No}} || || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes}}<br />
|-<br />
| BitForce SC 25 Gh/s||{{Yes|3.1.1}}||{{No}} ||{{No}}||{{Yes|3.3.1}}|| {{No}}|| || {{No}} ||{{No}} || || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes}}<br />
|-<br />
| BitForce SC 50 Gh/s||{{Yes|3.1.0}}||{{No}} ||{{No}}||{{Yes|3.3.1}}|| {{No}} || || {{No}} ||{{No}} || || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes}}<br />
|-<br />
| BitFury GPIO ||{{Yes|3.3.0}}||{{No}} || {{No}} ||{{Yes|3.8.0}}|| {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| Bitfury S.B. ||{{Yes|3.3.0}}||{{No}} || {{No}} ||{{Yes|3.11.0}}|| {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| BitMine A1 ||{{No}}||{{No}} ||{{No}}||{{Yes|4.0.0}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| BlackArrow Prospero X1||{{No}}||{{No}} || {{No}} || {{Yes}} || {{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Block Erupter Blade||{{Yes|3.2.0}}||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes}}<br />
|-<br />
| Block Erupter USB ||{{Yes|2.6.4}}||{{No}} ||{{No}}||{{Yes|2.6.4}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes|0.2}}<br />
|-<br />
| CoinTerra ||{{Yes|3.8.0}}||{{No}} ||{{No}}||{{Yes|3.12.1}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Drillbit ||{{Yes|3.10.0}}||{{No}} ||{{No}}||{{Yes|3.9.0}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| DualMiner ||{{Yes|4.0.0}}||{{No}} ||{{No}}||{{No}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes}}<br />
|-<br />
| HashBuster Alpha ||{{Yes|4.0.0}}||{{No}} || {{No}} ||{{Patch}}|| {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| HashBuster Micro ||{{Yes|3.8.0}}||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| HashBuster Nano ||{{Yes|3.5.0}}||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| HashFast ||{{Yes|3.10.0}}||{{No}} || {{No}} || {{Yes|3.5.0}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| Hex•Fury ||{{Yes|4.0.0}} || {{No}} || {{No}} || {{Yes|4.2.3}} || {{No}} || {{No}} || {{No}} || {{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| JingTian ||{{Yes|4.4.0}}||{{No}} || {{No}} ||{{Patch}}|| {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| Klondike ||{{Yes|3.6.0}}||{{No}} ||{{No}}||{{Yes|3.6.0}}||{{No}} || {{No}} || {{No}} ||{{No}} || || || || || || {{No}}<br />
|-<br />
| KnCMiner 28nm ||{{Yes|3.4.0}}||{{No}} || {{No}}||{{Yes|3.7.0}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| KnCMiner Neptune ||{{No}}||{{No}} || {{No}}||{{Patch}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| LittleFury ||{{Yes|3.5.0}}||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| Metabank BitFury ||{{Yes|3.3.0}}||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| Monarch PCI-e/Linux||{{Yes|4.3.0}}||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| Monarch PCI-e/Win ||{{Yes|4.5.0}}||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| Monarch USB ||{{Yes|4.3.0}}||{{No}} || {{No}} || {{Yes}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| NanoFury / IceFury ||{{Yes|3.4.0}}|| || {{No}} || {{Yes|3.10.0}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| NanoFury NF2 ||{{Yes|4.0.0}}|| || {{No}} || {{Yes|4.3.1}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| NanoFury NF6 ||{{Yes|4.0.0}}|| || {{No}} || {{Yes|4.3.1}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| OneStringMiner ||{{Yes|4.0.0}}|| {{No}} || {{No}} || {{Yes|3.8.2}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Red/BlueFury ||{{Yes|3.3.0}}||{{No}} ||{{No}}||{{Yes|3.5.0}}|| {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| Rockminer R-Box ||{{Yes|4.2.0}}||{{No}} || {{No}} || {{Yes|4.3.5}}|| {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| Spondoolies SP10 ||{{Yes|4.7.0}}||{{No}} ||{{No}}||{{Yes|4.2.3}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Spondoolies SP30 ||{{Patch|git}}||{{No}} ||{{No}}||{{Yes}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| T1/Tube ||{{Yes|3.3.0}}||{{No}} || {{No}} || {{Yes}} || {{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Twinfury ||{{Yes|3.7.0}}|| || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
! colspan='15' | mining devices (fpga)<br />
|-<br />
! Device !! BFG !!BitMinter!! BTCMiner!! cgminer !! Diablo !! EasyMiner !! gMinor !!GroupFabric!! MPBM !! OSFPGABM!! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| Avnet LX150T Devkit ||{{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{Yes}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| BitForce Single ||{{Yes|2.2.0}}||{{Yes|1.2.0}}||{{No}}||{{Yes|2.2.0}}||{{No}}||{{Yes}} || {{No}} ||{{No}} || {{Yes}} || || {{No}}||{{Patch|git}}||{{Yes}} || {{No}}<br />
|-<br />
| BFL MiniRig ||{{Yes|2.4.3}}||{{Yes|1.2.0}}||{{No}} ||{{Yes|2.5.0}}||{{No}}||{{Yes}} || {{No}} ||{{No}} || {{Yes}} || || {{No}} || {{No}} || || {{No}}<br />
|-<br />
| Cairnsmore1 ||{{Yes|2.6.4}}||{{No}} || {{No}} ||{{Yes|2.6.4}}||{{No}}|| {{No}} || {{No}} ||{{No}} || {{Yes}} || || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Digilent Nexys 2 500K ||{{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Icarus ||{{Yes|2.2.7}}||{{Yes|1.3.0}}||{{No}}||{{Yes|2.2.7}}||{{No}}|| {{No}} || {{No}} ||{{No}} || {{Yes}} || || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Lancelot ||{{Yes|2.6.4}}||{{No}} ||{{No}}||{{Yes|2.6.4}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{Yes}} || || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| ModMiner ||{{Yes|2.4.3}}||{{No}} ||{{No}} ||{{Yes|2.4.3}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{Yes}} || || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| Terasic DE2-115 || {{No}} ||{{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || || {{Yes}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| X5000 || {{No}} ||{{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| X6500 ||{{Yes|2.9.0}}||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || {{Yes}} || || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| ZTEX 1.15b || {{No}} ||{{No}} || {{Yes}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| ZTEX 1.15x ||{{Yes|2.3.4}}||{{No}} ||{{Yes}}||{{No|3.5.0}}||{{No}} || {{No}} || {{No}} ||{{No}} || {{Yes}} || || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| ZTEX 1.15y ||{{Yes|2.4.1}}||{{No}} ||{{Yes}}||{{No|3.5.0}}||{{No}} || {{No}} || {{No}} ||{{No}} || || || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
! colspan='15' | mining devices (gpu)<br />
|-<br />
! Device !! BFG !!BitMinter!! BTCMiner!! cgminer !! Diablo !! EasyMiner !! gMinor !!GroupFabric!! MPBM !! OSFPGABM!! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| OpenCL (Mesa AMD) ||{{Yes|3.0.1}}|| || {{No}} || {{No}} || || {{No}} || ||{{No}} || {{No}} || {{No}} || || || || {{No}}<br />
|-<br />
| OpenCL (Mesa NV) || || || {{No}} || {{No}} || || {{No}} || ||{{No}} || {{No}} || {{No}} || || || || {{No}}<br />
|-<br />
| OpenCL (AMD APP) || {{Yes}} || {{Yes}} || {{No}} || {{No|3.7.2}} || {{Yes}} || {{No}} || {{Yes}} ||{{No}} || {{No}} || {{No}} || {{Yes}} || {{Yes}} || {{Yes}} || {{No}}<br />
|-<br />
| OpenCL (nvidia) || {{Yes}} || {{Yes}} || {{No}} || {{No|3.7.2}} || || {{No}} || ||{{No}} || {{No}} || {{No}} || || || || {{No}}<br />
|-<br />
| CUDA (nvidia) || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{No}} || {{No}} || {{No}} || || {{No}} || {{Yes}} || {{No}}<br />
|-<br />
| DirectCompute || {{No}} ||{{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} ||{{Yes}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
! colspan='15' | mining devices (cpu)<br />
|-<br />
! Device !! BFG !!BitMinter!! BTCMiner!! cgminer !! Diablo !! EasyMiner !! gMinor !!GroupFabric!! MPBM !! OSFPGABM!! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| Intel SHA256 || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| SSE4 (x86_64) || {{Yes}} || {{No}} || {{No}} ||{{No|2.x}}|| || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{No}} || || {{No}}<br />
|-<br />
| SSE2 (x86_32) || {{Yes}} || {{No}} || {{No}} ||{{No|2.x}}|| || {{No}} || {{No}} || {{Yes}} || {{No}} || {{No}} || || {{No}} || || {{No}}<br />
|-<br />
| SSE2 (x86_64) || {{Yes}} || {{No}} || {{No}} ||{{No|2.x}}|| || {{No}} || {{No}} || {{Yes}} || {{No}} || {{No}} || || {{No}} || || {{No}}<br />
|-<br />
| Altivec (PPC) || {{Yes}} || {{No}} || {{No}} ||{{No|2.x}}|| || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{No}} || || {{No}}<br />
|-<br />
| VIA PadLock || {{Yes}} || {{No}} || {{No}} ||{{No|2.x}}|| || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{No}} || || {{No}}<br />
|-<br />
| Assembly (x86_32) || {{Yes}} || {{No}} || {{No}} ||{{No|2.x}}|| || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{No}} || || {{No}}<br />
|-<br />
| High-level CPU || {{Yes}} || {{Yes}} || {{No}} ||{{No|2.x}}|| || {{No}} || {{No}} || {{Yes}} || {{No}} || {{No}} || || {{No}} || || {{No}}<br />
|-<br />
| NEON (ARM) || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
! colspan='15' | miner protocols<br />
|-<br />
! Protocol !! BFG !!BitMinter!! BTCMiner!! cgminer !! Diablo !! EasyMiner !! gMinor !!GroupFabric!! MPBM !! OSFPGABM!! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| [[getblocktemplate]] ||{{Yes|2.8.0}}|| {{No}} || {{No}} || {{Yes|2.10.5}}<br />
| {{No}} || || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{Yes}} || {{No}}<br />
|-<br />
| [[Stratum]] ||{{Yes|2.9.0}}|| {{No}} || {{No}}||{{Yes|2.8.0}}||{{No}} || {{No}} ||{{No}}|| {{Yes}} ||{{Patch|testing}}||{{No}}||{{No}} || {{Yes}} || {{Yes}} || {{Yes}}<br />
|-<br />
| [[getwork]] || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{No}}<br />
|-<br />
| [[BlkPrep]] || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| [[UBBP]] || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
! colspan='15' | getwork extensions<br />
|-<br />
! Extension !! BFG !!BitMinter!! BTCMiner!! cgminer !! Diablo !! EasyMiner !! gMinor !!GroupFabric!! MPBM !! OSFPGABM!! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| hostlist || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || {{Yes}} || {{Yes}} || {{No}} || {{No}} || {{No}} || {{Yes}} || {{Yes}} || {{No}}<br />
|-<br />
| longpoll || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || || {{Yes}} || {{Yes}} ||{{Yes|0.1}}||{{NotAdv}}||{{No}}<ref name='broken2'>Supported, but has bugs.</ref>||{{NotAdv}}||{{Yes}} || {{No}}<br />
|-<br />
| midstate || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{No}} || ||{{NotAdv}}|| {{Yes}} ||{{Yes|0.1}}||{{No}}||{{NotAdv}}|| {{Yes}} || {{Yes}} || {{Yes}}<br />
|-<br />
| noncerange || {{No}} || {{No}} || {{No}} || {{No}} || {{No}} || || || {{Yes}} || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes}} || {{Yes}}<br />
|-<br />
| reject-reason || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || {{Yes}} || || {{No}} || {{Yes}} ||{{Yes|0.0}}||{{No}} || {{Yes}} ||{{Patch}}|| {{Yes}} || {{No}}<br />
|-<br />
| rollntime || {{Yes}} || {{Yes}} || {{No}} || {{Yes}} || {{Yes}} || || {{Yes}} || {{Yes}} ||{{Yes|0.1}}||{{No}} || {{No}} || {{Yes}} || {{No}}<ref name="broken2"/> || {{Yes}}<br />
|-<br />
| expire=N || {{Yes}} || {{Yes}} || {{No}} || {{Yes}} || {{Yes}} || || {{Yes}} || {{Yes}} ||{{Yes|0.1}}|| {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| submitold || {{Yes}} || {{NotAdv}}<ref name='doesntdiscard'>Not advertised, but generally doesn't discard shares.</ref><br />
| {{Yes}} || {{Yes}} || {{No}} || || {{No}} || {{NotAdv}}<ref name='doesntdiscard'/><br />
| {{NotAdv|0.0}}<ref name='doesntdiscard'/><br />
| {{No}} || {{No}} || {{No}} || {{No}} || {{No}}<br />
|-<br />
| switchto || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes}} || || {{Yes}} || {{Yes}} || {{No}} || {{No}} || {{No}} || {{No}} || {{Yes}} || {{No}}<br />
|-<br />
! colspan='15' | getblocktemplate/BlkPrep functionality<br />
|-<br />
! Function !! BFG !!BitMinter!! BTCMiner!! cgminer !! Diablo !! EasyMiner !! gMinor !!GroupFabric!! MPBM !! OSFPGABM!! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| longpoll || {{Yes}} || n/a || n/a || {{Yes}} || n/a || || n/a || n/a || n/a || n/a || n/a || || {{Yes}} || n/a<br />
|-<br />
| noncerange || {{No}} || n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || {{No}} || n/a<br />
|-<br />
| proposal || {{No}} || n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || {{No}} || n/a<br />
|-<br />
| serverlist || {{No}} || n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || {{No}} || n/a<br />
|-<br />
! colspan='15' | getblocktemplate/BlkPrep variations<br />
|-<br />
! Variation !! BFG !!BitMinter!! BTCMiner!! cgminer !! Diablo !! EasyMiner !! gMinor !!GroupFabric!! MPBM !! OSFPGABM!! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| (fixed coinbase)||{{Yes|2.9.0}}|| n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || || n/a<br />
|-<br />
| coinbase/append ||{{Yes|2.9.0}}|| n/a || n/a ||{{Yes|2.8.7}}|| n/a || || n/a || n/a || n/a || n/a || n/a || || {{Yes|Required}} || n/a<br />
|-<br />
| coinbase (set) ||{{Yes|2.10.4}}<ref name="oldbugs">Older versions have serious bugs.</ref><br />
| n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || || n/a<br />
|-<br />
| generation ||{{Yes|2.9.0}}|| n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || || n/a<br />
|-<br />
| (full submit) ||{{Yes|2.9.0}}|| n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || || n/a<br />
|-<br />
| share/coinbase ||{{Yes|2.9.0}}|| n/a || n/a ||{{Yes|2.8.7}}|| n/a || || n/a || n/a || n/a || n/a || n/a || || || n/a<br />
|-<br />
| share/merkle || {{No}} || n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || || n/a<br />
|-<br />
| share/truncate ||{{Yes|2.9.0}}|| n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || || n/a<br />
|-<br />
| time/increment ||{{Yes|2.9.0}}|| n/a || n/a || || n/a || || n/a || n/a || n/a || n/a || n/a || || || n/a<br />
|-<br />
| time/decrement ||{{Yes|2.9.0}}|| n/a || n/a || || n/a || || n/a || n/a || n/a || n/a || n/a || || || n/a<br />
|-<br />
| txns/add || {{No}} || n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || {{No}} || n/a<br />
|-<br />
| txns/remove || {{No}} || n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || {{No}} || n/a<br />
|-<br />
| prevblock || {{No}} || n/a || n/a || {{No}} || n/a || || n/a || n/a || n/a || n/a || n/a || || {{No}} || n/a<br />
|-<br />
| solo to bitcoind || {{Yes}} || n/a || n/a || {{Yes}} || n/a || || n/a || n/a || n/a || n/a || n/a || || || n/a<br />
|-<br />
! colspan='14' | Stratum functionality<br />
|-<br />
! Function !! BFG !!BitMinter!!BTCMiner!! cgminer !! Diablo !! EasyMiner !! gMinor !!GroupFabric!! MPBM !! OSFPGABM!! Phoenix !! poclbm !! Ufasoft !! ScalaMiner<br />
|-<br />
| resume ||{{Yes|3.0.0}}|| n/a || n/a ||{{Yes|2.11.0}}|| n/a || n/a || n/a ||{{No}} || || n/a || n/a || {{No}} || {{No}} || {{No}}<br />
|-<br />
| reconnect ||{{Yes|2.9.0}}|| n/a || n/a ||{{Yes|2.8.2}}|| n/a || n/a || n/a ||{{Yes}} || || n/a || n/a || {{Yes}} || {{No}} || {{No}}<br />
|-<br />
| add peers || {{No}} || n/a || n/a || {{No}} || n/a || n/a || n/a ||{{No}} || {{No}} || n/a || n/a || {{No}} || {{No}} || {{No}}<br />
|-<br />
| set diff ||{{Yes|2.9.0}}|| n/a || n/a ||{{Yes|2.8.0}}|| n/a || n/a || n/a ||{{Yes}} ||{{Patch|testing}}||n/a || n/a ||{{Yes|20121020}}||{{Yes}} || {{No}}<br />
|-<br />
| suggest target||{{Yes|3.2.0}}<ref name="suggest-target">Uses specific string target in parameter, implemented Aug 12, 2013 [https://github.com/luke-jr/bfgminer/commit/4a12eaebe60e4a085e5707ce4b4a3c67edb494dd commit 4a12eae]</ref>|| n/a || n/a || {{No}} || n/a || n/a || n/a ||{{No}} || {{No}} || n/a || n/a || {{No}} || {{No}} || {{No}}<br />
|-<br />
| suggest difficulty||{{No}}|| n/a || n/a || {{Yes|4.7.0}}<ref name="suggest-difficulty">Uses difficulty syntax in method name, implemented Sep 29, 2014 [https://github.com/ckolivas/cgminer/commits/37c6dfc438 commit 37c6dfc438]</ref> || n/a || n/a || n/a ||{{No}} || {{No}} || n/a || n/a || {{No}} || {{No}} || {{No}}<br />
|-<br />
| transparency ||{{Patch|partial}}|| n/a || n/a || {{No}} || n/a || n/a || n/a ||{{No}} || || n/a || n/a || {{No}} || {{No}} || {{No}}<br />
|-<br />
| get ver ||{{Yes|2.9.0}}|| n/a || n/a ||{{Yes|2.8.2}}|| n/a || n/a || n/a ||{{Yes}} || || n/a || n/a || {{Yes}} || {{No}} || {{No}}<br />
|-<br />
| show msg ||{{Yes|3.0.0}}|| n/a || n/a ||{{Yes|2.11.1}}|| n/a || n/a || n/a ||{{No}} || || n/a || n/a || {{No}} || {{No}} || {{No}}<br />
|-<br />
| get hashrate || {{No}} || n/a || n/a || {{No}} || n/a || n/a || n/a ||{{No}} || {{No}} || n/a || n/a || {{No}} || {{No}} || {{No}}<br />
|-<br />
| get temp || {{No}} || n/a || n/a || {{No}} || n/a || n/a || n/a ||{{No}} || {{No}} || n/a || n/a || {{No}} || {{No}} || {{No}}<br />
|-<br />
| roll ntime ||{{Yes|3.1.4}}|| n/a || n/a ||{{No}} || n/a || n/a || n/a ||{{No}} || || n/a || n/a || || || {{Yes}}<br />
|-<br />
| extranonce subscribe || {{Yes|4.7.0}}|| n/a || n/a || {{No}} || n/a || n/a || n/a ||{{No}} || {{No}} || n/a || n/a || {{No}} || {{No}} || {{No}}<br />
|-<br />
| block unsafe reconnect ||{{Yes|4.0.0}}|| n/a || n/a || {{Yes|4.3.1}} || n/a || n/a || n/a || {{Yes|1.15.1.0}} || {{No}} || n/a || n/a || {{No}} || {{No}} ||<br />
|-<br />
| unauth TLS ||{{Yes|4.0.0}}|| n/a || n/a || {{No}} || n/a || n/a || n/a || {{No}} || {{No}} || n/a || n/a || {{No}} || {{No}} ||<br />
|}<br />
<br />
<references/></div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Buying_bitcoins&diff=25304Buying bitcoins2012-04-14T06:10:59Z<p>Phantomcircuit: /* Major Exchanges */</p>
<hr />
<div>There are various methods available for buying bitcoins.<br />
<br />
<span style="color:red">Warning: Please be careful with your money. When sending money to an exchange or seller you are trusting that the operator will not abscond with your funds and that the operator maintains secure systems that protect against theft -- internal or external. It is recommended that you obtain the real-world identity of the operator and ensure that sufficient recourse is available. Exchanging or storing significant amounts of funds with exchanges is not recommended.</span><br />
<br />
==Major Exchanges==<br />
<br />
The least expensive methods for buying bitcoins involve transferring funds using a bank wire, ACH, bank transfer (ACH, EUR / SEPA).<br />
<br />
{| class="wikitable"<br />
|-<br />
| Exchange || Type || Adding Funds || Withdrawing Funds || [[eWallet]] || Notes<br />
|-<br />
| [[MtGox]] || Market || BTC<br/>BTC (Redeemable code)<br />USD ([[Dwolla]])<br />USD (International bank wire)<br />USD (Wire to [[AurumXChange Company|AurumXChange]])<br />AUD (Bank wire)<br />GBP (Bank wire)<br />USD (Redeemable code)<br />Liberty Reserve USD || BTC<br />BTC (Redeemable code)<br />USD ([[Dwolla]])<br />USD (Wire via [[AurumXChange Company|AurumXChange]])<br />AUD (Bank wire)<br />USD (Redeemable code)<br />Liberty Reserve USD (via AurumXChange) || {{Table Value Yes}} || Oldest running exchange. Higest daily volume. Respecting AML laws, Restrictions and limits on withdrawals.<br />
|-<br />
| [[Britcoin]]<br/>&amp;<br/>[[Intersango]] || Market || BTC<br />GBP (bank deposit)<br/>USD ([[Dwolla]])<br />EUR (SEPA bank wire)<br />PLN (Bank Wire) || BTC<br />GBP (bank transfer)<br/>USD ([[Dwolla]])<br />EUR (SEPA bank wire)<br />PLN (Bank Wire) || {{Table Value Yes}} || Operated by the [https://bitcoinconsultancy.com/ BitcoinConsultancy] <br/> [https://intersango.com Intersango] is a completely custom trading platform built from the ground up with security, scalability and extensibility in mind. [https://bitcointalk.org/index.php?topic=43745.0 More Information]<br/><br/>Boasts an [https://bitcoinconsultancy.com/wiki/index.php/Intersango/API ever expanding API]<br />
|-<br />
| [[VirWoX]] || Market || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br/>USD,EUR,GBP (Credit & Debit cards via [[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (DIRECTebanking / Sofortüberweisung)<br/>USD,EUR,GBP,CHF ([[paysafecard]])<br/>EUR (SEPA bank transfer) || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br />USD,EUR,GBP ([[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (SEPA bank transfer) || {{Table Value Yes}} || Trading through Second Life Linden Dollars.<br/>Variable limits on PayPal and Credit Card deposits. <br />
|-<br />
| [[BTC-E]] || Market || BTC<br/>USD ([[Liberty Reserve]])<br />USD (Interkassa) || BTC<br/>USD (Webmoney) || {{Table Value Yes}} || Language: Russian. Interkassa can be funded from Webmoney and many other methods.<br />
|-<br />
| [[VirtEx]] || Market || BTC<br/>CAD (online bill pay)<br />CAD (cash at TDBank) || BTC<br/>CAD (direct deposit) || {{Table Value Yes}} ||<br />
|-<br />
| [[Camp BX]] (CBX) || Market || BTC <br/>USD (Check / ACH Direct Deposit)<br />USPS Postal Money Order <br/> USD ([[Dwolla]]) <br/> USD Bill Pay <br/> Walmart MoneyGram || BTC <br />USD (Check / ACH Direct Deposit)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || {{Table Value Yes}} || <ul> <li> Security certification from McAfee</li><li> Advanced trading options with AON/FOK/Market</li> <li>STOPLOSS and Short-Selling in Pipeline</li><li> Trading API available</li><li> Wallet API available </li><li> CBX Instant Bitcoin Transfers Feature </li><li> Stoploss / Custom Order Expiry Date/Time </li><li> SMS (Text Message) Notifications </li> <li> Two-Factor Authentication </li> <li> Based in USA - Atlanta </li> </ul> <br />
|-<br />
| [[Mercado Bitcoin]] || Market || BTC<br/>BRL (Bank transfer)<br />BRL (Bank transfer - MoIP)<br />Liberty Reserve USD || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[Bitcoin-Central]] || Market || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />CAD (Cash deposit)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />PGAU [[Pecunix]] Gold || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />[[Pecunix]] Gold || {{Table Value Yes}} || [https://github.com/davout/bitcoin-central Open-source], community reviewed platform<br />Available in French and English languages<br />
|-<br />
| [[HelloBitcoin]] || Market || BTC<br/>USD (Dwolla)<br />USD (Bank wire)<br />USD (Check) || BTC<br/>USD (Check)<br />USD (Bank wire)<br />USD (ACH) || {{Table Value Yes}} || Offers margin trading and shorting.<br />
|-<br />
| [[Brasil Bitcoin Market]] || Market || BTC<br/>BRL (Bank transfer - MoIP) || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[Australian Bitcoin Exchange]] || Market || BTC<br />AUD (Electronic funds deposit)<br />AUD (Mtgox Redeemable code) || BTC<br />AUD (Electronic funds transfer) || {{Table Value Yes}} ||<br />
|-<br />
| [[BitStamp]] || Market || BTC<br />BTC (Redeemable code)<br />EUR (SEPA transfer)<br />USD (Intl wire)<br />USD (Redeemable code)<br />CHF || BTC<br />BTC (Redeemable code)<br />EUR (SEPA transfer)<br />USD (Intl wire)<br />USD (Redeemable code)<br />CHF || {{Table Value Yes}} || EUR and CHF deposits converted to/from USD for trading<br />
|-<br />
| [[Rock Currency Exchange]] || Market || BTC<br/>EUR (SEPA transfer)<br />SLL (Second Life)<br />USD (Dwolla) || BTC<br/>EUR (SEPA transfer)<br />SLL (Second Life)<br />USD (Dwolla) || {{Table Value Yes}} || <br />
|-<br />
| [[CryptoXchange]] || Market || BTC<br/>NMC<br/>LTC<br/>USD<br/>AUD (Bank Transfer)<br/>GBP || BTC<br/>NMC<br/>LTC<br/>USD<br/>AUD (Bank Transfer)<br/>GBP || {{Table Value Yes}} || <ul> <li> Buy Gold,Silver,Palladium and Casascius physical bitcoins plus other items in the store.</li> <li> Affiliate program.</li> <li> Mining Pool integration program.</li> <li> Bitcoin, Namecoin and Litecoin </li> <li>Multiple Authentication Levels</li> <li> API </li> <li> Free Yubikey's to High Volume Traders </li> <li> An Australian Owned and Operated Registered Company.</li> <li><br />
Inquiries: contact@cryptoxchanger.com or Phone: +61280050602 </li> </ul><br />
|-<br />
| [[WM-Center]] || Exchanger || BTC<br/>USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP || BTC<br />USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP<br /> PayPal USD/EUR, Moneybookers, Neteller || {{Table Value No}} || 24/7/365 support in english, spanish and russian!<br />
|-<br />
| [[bitNZ]] || Market || BTC<br/>NZD (Domestic bank transfer) || BTC<br/>NZD (Domestic bank transfer) || {{Table Value Yes}} || <br />
|-<br />
| [[Bitfloor]] || Market || BTC<br/>USD (Dwolla)<br />USD (Mt. Gox Redeemable Code) || BTC<br/>USD (Dwolla) || {{Table Value Yes}} || <br />
|}<br />
<br />
==Fixed Rate Exchanges & Others==<br />
<br />
For smaller amounts, the options are limited due to bank transfer fees, conversion fees and transaction size restrictions. Options include:<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment Method || Notes<br />
|-<br />
| [https://bitinstant.com BitInstant.com] || Market Rate || USD (Cash Deposit)<BR />USD (Dwolla)<BR />USD (Liberty Reserve) || Deposit cash at 700,000 locations around the world and have your Bitcoins within 30 minutes. Absolute fastest and easiest way to buy Bitcoins. <br />
|-<br />
| [https://bitcoinnordic.com Bitcoin Nordic] || Fixed Rate || DKK (Credit Card)<BR />EUR (SEPA and wire transfer)<BR />USD/EUR/DKK (Cash or check) || Get Bitcoins within '''one minute''' when paying with Scandinavian credit cards.<br />
|-<br />
| [https://blockchain.info/wallet/sms-phone-deposits Blockchain.info] || Fixed Rate || USD, AUD, CAD, JPY, EUR, CHF, GBP, PLN, CZK, RON, RUB, SEK, NOK, DKK || Purchased using SMS or premium phone call.<br />
|-<br />
| [http://au.spendbitcoins.com au.spendbitcoins.com] || Fixed Rate || AUD || cash deposit at NAB <br />
|-<br />
| [http://buybitcoin.com BuyBitcoin] || Market || USD (Cash)<BR />USD (Western Union)<BR />USD (PayPal)<BR />USD (Credit Card)<BR />USD (Dwolla)<BR />USD (Cash deposit)<br />USD (Bank wire)<BR />USD (Cash in the mail)<BR />USD (Money Order)<BR />USD (Cashier's Check/Certified Check)<BR />USD (Traveler's Check)<BR />USD (Prepaid Debit Card)<BR /> || Instant Bitcoin delivery over the phone.<br/><br/>Public office address: 290 5th Ave, 5th floor, New York, NY 10001<br/><br/>Telephone or SMS text message 24 hours: +1 646-580-0044<br />
|-<br />
| [[bitcoin.de]] || Market || EUR (bank wire)<br />EUR (SEPA bank transfer)<br />EUR (Liberty Reserve)<br />EUR (MoneyBookers) || Varies (person to person)<br />0.01 free Bitcoins for every new user<br />eWallet<br />Affiliate program<br />Language: German, Englisch<br/> News<br />
|-<br />
| [[BitcoinMarket24]] || Fixed Rate || EUR (SEPA bank transfer) || Instant Bitcoin purchases via SEPA. No registration needed!<br />
|-<br />
| [[Blizzcoin]] || Fixed Rate || EUR (SEPA bank transfer) || Buy Bitcoins within minutes. Instant exchange. <br />No registration.<br />
|-<br />
| [[Bitcoin Market]] || Market || USD (Liberty Reserve)<br />USD (MoneyBookers)<br />GAU (Pecunix) || Varies (person to person)<br />
|-<br />
| [[BitMarket.eu]] || Market || EUR (Euro)<br />GBP (British Sterling Pound)<br />USD (U.S. Dollar)<br>PLN (Polish złoty)<br />AUD (Australian Dollar)<br />CAD (Canadian Dollar)<br />ZAR (South African Rand)<br />ILS (Israeli Shekel)<br />CHF (Swiss Franc)<br>RUB (Russian Ruble) || Varies (person to person)<br />
|-<br />
| [[Bitcoiny.cz]] || Market || CZK || Varies (person to person)<br />
|-<br />
| [[BTCX.se]] || Fixed Rate || SEK || Transfer to and banks in Sweden.<br />
|-<br />
| [[Bit]] / BTC China || Market || n/a || n/a<br />
|-<br />
| [[Bitfunnel]] || Credit Card payment exchange/brokering services || Varies (person to person)<br />
|-<br />
| [[bitcoin-otc|#bitcoin-otc]] || [http://bitcoin-otc.com/vieworderbook.php Order Book] || Varies (person to person) || IRC trading marketplace will usually have people willing to deal for small and larger amounts using various payment methods, including [[PayPal]], [[Dwolla]], [[Linden Dollars]], etc.<br />
|-<br />
| [[Lilion Transfer]] || Fixed Rate || Bank Transfer: USD, AUD, CAD, JPY, EUR, CHF, GBP, PLN, CZK, RON, RUB, SEK, NOK, DKK<br /> Liberty Reserve<br />Perfect Money<br />Monetto<br />OK Pay<br />Cosmic Pay<br />Pecunix<br />C-Gold<br />E-Pay Payments<br />PayPal|| 122 accounts worldwide.<br /> Support in 30 languages<br />
|-<br />
| [[Nanaimo Gold]] || Fixed Rate || USD (Liberty Reserve)<br />Western Union money transfer<br />Moneygram money transfer<br />Cash in the mail || LR <--> Bitcoin exchange is automated<br />For cash in the mail send USD, EUR, CAD, or GBP. Canada mailing address.<br />
|-<br />
| [[Bitcoin Argentina]] || Fixed Rate || Cash: ARS, BRL, USD <br /> Bank transfer: ARS || No exchange fees!<br />
|-<br />
| [[Bitcoin.com.es]] || Fixed Rate || EUR (bank deposit) || Bank transfer or cash deposits at OpenBank in Spain.<br />
|-<br />
| [[Bahtcoin]] || Fixed Rate || Cash, Webmoney<br />Liberty Reserve USD || Will cash out to Thai mobile and gaming prepaid cards as well.<br />
|-<br />
| [[DialCoin]] || Fixed Rate || EUR || Purchased using SMS. Charges made to mobile carrier.<br />
|-<br />
| [[Bitcoin Brasil]] || Fixed Rate || BRL (Brazilian Real)<br />USD || Cash exchange<br />
|-<br />
| [[BitPiggy]] || Fixed Rate || AUD (Australian Dollar)|| Payment via bank transfer.<br />
|-<br />
| [[GetBitcoin]] || Fixed Rate || USD (Dwolla)<BR />USD (Cash deposit)<br />USD (Bank wire)<BR />USD (Cash in the mail)<BR />USD (Money Order)<BR />USD (Cashier's Check/Certified Check)<BR />USD (Western Union)<BR />USD (Traveler's Check)<BR />USD (Prepaid Debit Card)<BR /> || For cash in mail, send USD. U.S. mailing address.<br />
|-<br />
| [[bitcoin.local]] || Directory || Varies (person to person) ||<br />
|-<br />
| [[bcchanger.com]] || Directory || Enables person to person purchases and sales via PayPal, MoneyBookers and other e-currency platforms ||<br />
|-<br />
| [[SimpleCoin]] || Fixed Rate || USD|| Payment via credit or debit card.<br />
|-<br />
| [[YouTipIt]] || Fixed Rate || USD<br />EUR<br />GBP || Purchase bitcoins to add to your balance with YouTipIt using credit card through ClickAndBuy.<br />
|-<br />
| [[Ubitex]] || In person exchange || Varies (person to person) ||<br />
|-<br />
| [[anonXchange]] || Fixed Rate || EUR<br />GBP || Liberty Reserve, Paysafecard and Ukash to Bitcoin<br />
|-<br />
| [[Bitcoil]] || Fixed Rate || ILS (bank transfer) ||<br />
|- <br />
|[[btcnow]] || Market || USD (OKPay, Dwolla) || bitcoins transferred instantly<br />
|-<br />
|[[Btc-Direct]] || Fixed Rate || Paid by phone or SMS<br />USD<br />EUR<br />GBP || Incredible: Purchase your Bitcoins with your phone !!. We are the first to offer you the easiest way to buy Bitcoins.<br />
|-<br />
| [http://minibits.weebly.com/ MiniBits]] || Fixed Rate || PayPal || Buy mini (micro) Bitcoins with PayPal.<br />
|}<br />
<br />
==Other Financial Services==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment || Settled || Notes<br />
|-<br />
| [https://Bitcoinica.com Bitcoinica] || BTC/USD Contract for Difference (CFD) trading || BTC, USD, EUR, GBP || BTC, USD || Leveraged trading from 2.5X and higher.<br />
|-<br />
| [http://polimedia.us/bitcoin/options.php Derivatives] || Buy / Sell / Exercise CALLs / PUTs, American style.<br />52 strikes offered (by .5), current month + 2.<br /> No shorting available yet.|| BTC || BTC || Transactions encoded via amt.<br /> Must use non-rounding client<br />(0.3.24 or later)<br />
|-<br />
| [https://vircurex.com Vircurex] || Buy / Sell Options<br/>Loan / Borrow || BTC, NMC, LTC, DVC, GG, I0C, IXC, SC || BTC, NMC, LTC, DVC, GG, I0C, IXC, SC ||<br />
|}<br />
<br />
==Physical Bitcoins==<br />
<br />
Physical Bitcoins are bearer tokens that have an embedded redeemable digital bitcoin value if torn open. While they are somewhat expensive if bought purely for the digital bitcoins, they are relatively easy to get, because they can be purchased with PayPal or credit card - payment methods not typically not accepted for pure digital bitcoin purchases.<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment || Notes<br />
|-<br />
| [http://www.memorydealers.com Memory Dealers] || Casascius Physical Bitcoins || USD (PayPal/Credit Card) || <br />
|-<br />
| [https://www.casascius.com Casascius.com] || Casascius Physical Bitcoins || BTC || <br />
|-<br />
| [https://www.giftcoin.net/card Bitcoin Gift Card] || Bitcioin Gift Card Physical Bitcoin Issued By GiftCoin || BTC || <br />
|-<br />
| [http://www.bitbills.com Bitbills] || Bitbills cards || BTC || Not taking orders as of Nov 2011.<br />
|}<br />
<br />
==See Also==<br />
<br />
* [[:Category:Digital_currencies|Digital Currencies]]<br />
* [[Selling bitcoins]]<br />
* [[Secure Trading]]<br />
* [[:Category:Local|Local]] exchanges<br />
<br />
[[Category:Exchanges]]<br />
[[Category:Introduction]]<br />
[[zh-cn:购买bitcoins]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Buying_bitcoins&diff=25303Buying bitcoins2012-04-14T06:09:56Z<p>Phantomcircuit: /* Major Exchanges */</p>
<hr />
<div>There are various methods available for buying bitcoins.<br />
<br />
<span style="color:red">Warning: Please be careful with your money. When sending money to an exchange or seller you are trusting that the operator will not abscond with your funds and that the operator maintains secure systems that protect against theft -- internal or external. It is recommended that you obtain the real-world identity of the operator and ensure that sufficient recourse is available. Exchanging or storing significant amounts of funds with exchanges is not recommended.</span><br />
<br />
==Major Exchanges==<br />
<br />
The least expensive methods for buying bitcoins involve transferring funds using a bank wire, ACH, bank transfer (ACH, EUR / SEPA).<br />
<br />
{| class="wikitable"<br />
|-<br />
| Exchange || Type || Adding Funds || Withdrawing Funds || [[eWallet]] || Notes<br />
|-<br />
| [[MtGox]] || Market || BTC<br/>BTC (Redeemable code)<br />USD ([[Dwolla]])<br />USD (International bank wire)<br />USD (Wire to [[AurumXChange Company|AurumXChange]])<br />AUD (Bank wire)<br />GBP (Bank wire)<br />USD (Redeemable code)<br />Liberty Reserve USD || BTC<br />BTC (Redeemable code)<br />USD ([[Dwolla]])<br />USD (Wire via [[AurumXChange Company|AurumXChange]])<br />AUD (Bank wire)<br />USD (Redeemable code)<br />Liberty Reserve USD<br />Liberty Reserve USD (via AurumXChange) || {{Table Value Yes}} || Oldest running exchange. Higest daily volume. Respecting AML laws, Restrictions and limits on withdrawals.<br />
|-<br />
| [[Britcoin]]<br/>&amp;<br/>[[Intersango]] || Market || BTC<br />GBP (bank deposit)<br/>USD ([[Dwolla]])<br />EUR (SEPA bank wire)<br />PLN (Bank Wire) || BTC<br />GBP (bank transfer)<br/>USD ([[Dwolla]])<br />EUR (SEPA bank wire)<br />PLN (Bank Wire) || {{Table Value Yes}} || Operated by the [https://bitcoinconsultancy.com/ BitcoinConsultancy] <br/> [https://intersango.com Intersango] is a completely custom trading platform built from the ground up with security, scalability and extensibility in mind. [https://bitcointalk.org/index.php?topic=43745.0 More Information]<br/><br/>Boasts an [https://bitcoinconsultancy.com/wiki/index.php/Intersango/API ever expanding API]<br />
|-<br />
| [[VirWoX]] || Market || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br/>USD,EUR,GBP (Credit & Debit cards via [[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (DIRECTebanking / Sofortüberweisung)<br/>USD,EUR,GBP,CHF ([[paysafecard]])<br/>EUR (SEPA bank transfer) || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br />USD,EUR,GBP ([[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (SEPA bank transfer) || {{Table Value Yes}} || Trading through Second Life Linden Dollars.<br/>Variable limits on PayPal and Credit Card deposits. <br />
|-<br />
| [[BTC-E]] || Market || BTC<br/>USD ([[Liberty Reserve]])<br />USD (Interkassa) || BTC<br/>USD (Webmoney) || {{Table Value Yes}} || Language: Russian. Interkassa can be funded from Webmoney and many other methods.<br />
|-<br />
| [[VirtEx]] || Market || BTC<br/>CAD (online bill pay)<br />CAD (cash at TDBank) || BTC<br/>CAD (direct deposit) || {{Table Value Yes}} ||<br />
|-<br />
| [[Camp BX]] (CBX) || Market || BTC <br/>USD (Check / ACH Direct Deposit)<br />USPS Postal Money Order <br/> USD ([[Dwolla]]) <br/> USD Bill Pay <br/> Walmart MoneyGram || BTC <br />USD (Check / ACH Direct Deposit)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || {{Table Value Yes}} || <ul> <li> Security certification from McAfee</li><li> Advanced trading options with AON/FOK/Market</li> <li>STOPLOSS and Short-Selling in Pipeline</li><li> Trading API available</li><li> Wallet API available </li><li> CBX Instant Bitcoin Transfers Feature </li><li> Stoploss / Custom Order Expiry Date/Time </li><li> SMS (Text Message) Notifications </li> <li> Two-Factor Authentication </li> <li> Based in USA - Atlanta </li> </ul> <br />
|-<br />
| [[Mercado Bitcoin]] || Market || BTC<br/>BRL (Bank transfer)<br />BRL (Bank transfer - MoIP)<br />Liberty Reserve USD || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[Bitcoin-Central]] || Market || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />CAD (Cash deposit)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />PGAU [[Pecunix]] Gold || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />[[Pecunix]] Gold || {{Table Value Yes}} || [https://github.com/davout/bitcoin-central Open-source], community reviewed platform<br />Available in French and English languages<br />
|-<br />
| [[HelloBitcoin]] || Market || BTC<br/>USD (Dwolla)<br />USD (Bank wire)<br />USD (Check) || BTC<br/>USD (Check)<br />USD (Bank wire)<br />USD (ACH) || {{Table Value Yes}} || Offers margin trading and shorting.<br />
|-<br />
| [[Brasil Bitcoin Market]] || Market || BTC<br/>BRL (Bank transfer - MoIP) || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[Australian Bitcoin Exchange]] || Market || BTC<br />AUD (Electronic funds deposit)<br />AUD (Mtgox Redeemable code) || BTC<br />AUD (Electronic funds transfer) || {{Table Value Yes}} ||<br />
|-<br />
| [[BitStamp]] || Market || BTC<br />BTC (Redeemable code)<br />EUR (SEPA transfer)<br />USD (Intl wire)<br />USD (Redeemable code)<br />CHF || BTC<br />BTC (Redeemable code)<br />EUR (SEPA transfer)<br />USD (Intl wire)<br />USD (Redeemable code)<br />CHF || {{Table Value Yes}} || EUR and CHF deposits converted to/from USD for trading<br />
|-<br />
| [[Rock Currency Exchange]] || Market || BTC<br/>EUR (SEPA transfer)<br />SLL (Second Life)<br />USD (Dwolla) || BTC<br/>EUR (SEPA transfer)<br />SLL (Second Life)<br />USD (Dwolla) || {{Table Value Yes}} || <br />
|-<br />
| [[CryptoXchange]] || Market || BTC<br/>NMC<br/>LTC<br/>USD<br/>AUD (Bank Transfer)<br/>GBP || BTC<br/>NMC<br/>LTC<br/>USD<br/>AUD (Bank Transfer)<br/>GBP || {{Table Value Yes}} || <ul> <li> Buy Gold,Silver,Palladium and Casascius physical bitcoins plus other items in the store.</li> <li> Affiliate program.</li> <li> Mining Pool integration program.</li> <li> Bitcoin, Namecoin and Litecoin </li> <li>Multiple Authentication Levels</li> <li> API </li> <li> Free Yubikey's to High Volume Traders </li> <li> An Australian Owned and Operated Registered Company.</li> <li><br />
Inquiries: contact@cryptoxchanger.com or Phone: +61280050602 </li> </ul><br />
|-<br />
| [[WM-Center]] || Exchanger || BTC<br/>USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP || BTC<br />USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP<br /> PayPal USD/EUR, Moneybookers, Neteller || {{Table Value No}} || 24/7/365 support in english, spanish and russian!<br />
|-<br />
| [[bitNZ]] || Market || BTC<br/>NZD (Domestic bank transfer) || BTC<br/>NZD (Domestic bank transfer) || {{Table Value Yes}} || <br />
|-<br />
| [[Bitfloor]] || Market || BTC<br/>USD (Dwolla)<br />USD (Mt. Gox Redeemable Code) || BTC<br/>USD (Dwolla) || {{Table Value Yes}} || <br />
|}<br />
<br />
==Fixed Rate Exchanges & Others==<br />
<br />
For smaller amounts, the options are limited due to bank transfer fees, conversion fees and transaction size restrictions. Options include:<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment Method || Notes<br />
|-<br />
| [https://bitinstant.com BitInstant.com] || Market Rate || USD (Cash Deposit)<BR />USD (Dwolla)<BR />USD (Liberty Reserve) || Deposit cash at 700,000 locations around the world and have your Bitcoins within 30 minutes. Absolute fastest and easiest way to buy Bitcoins. <br />
|-<br />
| [https://bitcoinnordic.com Bitcoin Nordic] || Fixed Rate || DKK (Credit Card)<BR />EUR (SEPA and wire transfer)<BR />USD/EUR/DKK (Cash or check) || Get Bitcoins within '''one minute''' when paying with Scandinavian credit cards.<br />
|-<br />
| [https://blockchain.info/wallet/sms-phone-deposits Blockchain.info] || Fixed Rate || USD, AUD, CAD, JPY, EUR, CHF, GBP, PLN, CZK, RON, RUB, SEK, NOK, DKK || Purchased using SMS or premium phone call.<br />
|-<br />
| [http://au.spendbitcoins.com au.spendbitcoins.com] || Fixed Rate || AUD || cash deposit at NAB <br />
|-<br />
| [http://buybitcoin.com BuyBitcoin] || Market || USD (Cash)<BR />USD (Western Union)<BR />USD (PayPal)<BR />USD (Credit Card)<BR />USD (Dwolla)<BR />USD (Cash deposit)<br />USD (Bank wire)<BR />USD (Cash in the mail)<BR />USD (Money Order)<BR />USD (Cashier's Check/Certified Check)<BR />USD (Traveler's Check)<BR />USD (Prepaid Debit Card)<BR /> || Instant Bitcoin delivery over the phone.<br/><br/>Public office address: 290 5th Ave, 5th floor, New York, NY 10001<br/><br/>Telephone or SMS text message 24 hours: +1 646-580-0044<br />
|-<br />
| [[bitcoin.de]] || Market || EUR (bank wire)<br />EUR (SEPA bank transfer)<br />EUR (Liberty Reserve)<br />EUR (MoneyBookers) || Varies (person to person)<br />0.01 free Bitcoins for every new user<br />eWallet<br />Affiliate program<br />Language: German, Englisch<br/> News<br />
|-<br />
| [[BitcoinMarket24]] || Fixed Rate || EUR (SEPA bank transfer) || Instant Bitcoin purchases via SEPA. No registration needed!<br />
|-<br />
| [[Blizzcoin]] || Fixed Rate || EUR (SEPA bank transfer) || Buy Bitcoins within minutes. Instant exchange. <br />No registration.<br />
|-<br />
| [[Bitcoin Market]] || Market || USD (Liberty Reserve)<br />USD (MoneyBookers)<br />GAU (Pecunix) || Varies (person to person)<br />
|-<br />
| [[BitMarket.eu]] || Market || EUR (Euro)<br />GBP (British Sterling Pound)<br />USD (U.S. Dollar)<br>PLN (Polish złoty)<br />AUD (Australian Dollar)<br />CAD (Canadian Dollar)<br />ZAR (South African Rand)<br />ILS (Israeli Shekel)<br />CHF (Swiss Franc)<br>RUB (Russian Ruble) || Varies (person to person)<br />
|-<br />
| [[Bitcoiny.cz]] || Market || CZK || Varies (person to person)<br />
|-<br />
| [[BTCX.se]] || Fixed Rate || SEK || Transfer to and banks in Sweden.<br />
|-<br />
| [[Bit]] / BTC China || Market || n/a || n/a<br />
|-<br />
| [[Bitfunnel]] || Credit Card payment exchange/brokering services || Varies (person to person)<br />
|-<br />
| [[bitcoin-otc|#bitcoin-otc]] || [http://bitcoin-otc.com/vieworderbook.php Order Book] || Varies (person to person) || IRC trading marketplace will usually have people willing to deal for small and larger amounts using various payment methods, including [[PayPal]], [[Dwolla]], [[Linden Dollars]], etc.<br />
|-<br />
| [[Lilion Transfer]] || Fixed Rate || Bank Transfer: USD, AUD, CAD, JPY, EUR, CHF, GBP, PLN, CZK, RON, RUB, SEK, NOK, DKK<br /> Liberty Reserve<br />Perfect Money<br />Monetto<br />OK Pay<br />Cosmic Pay<br />Pecunix<br />C-Gold<br />E-Pay Payments<br />PayPal|| 122 accounts worldwide.<br /> Support in 30 languages<br />
|-<br />
| [[Nanaimo Gold]] || Fixed Rate || USD (Liberty Reserve)<br />Western Union money transfer<br />Moneygram money transfer<br />Cash in the mail || LR <--> Bitcoin exchange is automated<br />For cash in the mail send USD, EUR, CAD, or GBP. Canada mailing address.<br />
|-<br />
| [[Bitcoin Argentina]] || Fixed Rate || Cash: ARS, BRL, USD <br /> Bank transfer: ARS || No exchange fees!<br />
|-<br />
| [[Bitcoin.com.es]] || Fixed Rate || EUR (bank deposit) || Bank transfer or cash deposits at OpenBank in Spain.<br />
|-<br />
| [[Bahtcoin]] || Fixed Rate || Cash, Webmoney<br />Liberty Reserve USD || Will cash out to Thai mobile and gaming prepaid cards as well.<br />
|-<br />
| [[DialCoin]] || Fixed Rate || EUR || Purchased using SMS. Charges made to mobile carrier.<br />
|-<br />
| [[Bitcoin Brasil]] || Fixed Rate || BRL (Brazilian Real)<br />USD || Cash exchange<br />
|-<br />
| [[BitPiggy]] || Fixed Rate || AUD (Australian Dollar)|| Payment via bank transfer.<br />
|-<br />
| [[GetBitcoin]] || Fixed Rate || USD (Dwolla)<BR />USD (Cash deposit)<br />USD (Bank wire)<BR />USD (Cash in the mail)<BR />USD (Money Order)<BR />USD (Cashier's Check/Certified Check)<BR />USD (Western Union)<BR />USD (Traveler's Check)<BR />USD (Prepaid Debit Card)<BR /> || For cash in mail, send USD. U.S. mailing address.<br />
|-<br />
| [[bitcoin.local]] || Directory || Varies (person to person) ||<br />
|-<br />
| [[bcchanger.com]] || Directory || Enables person to person purchases and sales via PayPal, MoneyBookers and other e-currency platforms ||<br />
|-<br />
| [[SimpleCoin]] || Fixed Rate || USD|| Payment via credit or debit card.<br />
|-<br />
| [[YouTipIt]] || Fixed Rate || USD<br />EUR<br />GBP || Purchase bitcoins to add to your balance with YouTipIt using credit card through ClickAndBuy.<br />
|-<br />
| [[Ubitex]] || In person exchange || Varies (person to person) ||<br />
|-<br />
| [[anonXchange]] || Fixed Rate || EUR<br />GBP || Liberty Reserve, Paysafecard and Ukash to Bitcoin<br />
|-<br />
| [[Bitcoil]] || Fixed Rate || ILS (bank transfer) ||<br />
|- <br />
|[[btcnow]] || Market || USD (OKPay, Dwolla) || bitcoins transferred instantly<br />
|-<br />
|[[Btc-Direct]] || Fixed Rate || Paid by phone or SMS<br />USD<br />EUR<br />GBP || Incredible: Purchase your Bitcoins with your phone !!. We are the first to offer you the easiest way to buy Bitcoins.<br />
|-<br />
| [http://minibits.weebly.com/ MiniBits]] || Fixed Rate || PayPal || Buy mini (micro) Bitcoins with PayPal.<br />
|}<br />
<br />
==Other Financial Services==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment || Settled || Notes<br />
|-<br />
| [https://Bitcoinica.com Bitcoinica] || BTC/USD Contract for Difference (CFD) trading || BTC, USD, EUR, GBP || BTC, USD || Leveraged trading from 2.5X and higher.<br />
|-<br />
| [http://polimedia.us/bitcoin/options.php Derivatives] || Buy / Sell / Exercise CALLs / PUTs, American style.<br />52 strikes offered (by .5), current month + 2.<br /> No shorting available yet.|| BTC || BTC || Transactions encoded via amt.<br /> Must use non-rounding client<br />(0.3.24 or later)<br />
|-<br />
| [https://vircurex.com Vircurex] || Buy / Sell Options<br/>Loan / Borrow || BTC, NMC, LTC, DVC, GG, I0C, IXC, SC || BTC, NMC, LTC, DVC, GG, I0C, IXC, SC ||<br />
|}<br />
<br />
==Physical Bitcoins==<br />
<br />
Physical Bitcoins are bearer tokens that have an embedded redeemable digital bitcoin value if torn open. While they are somewhat expensive if bought purely for the digital bitcoins, they are relatively easy to get, because they can be purchased with PayPal or credit card - payment methods not typically not accepted for pure digital bitcoin purchases.<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment || Notes<br />
|-<br />
| [http://www.memorydealers.com Memory Dealers] || Casascius Physical Bitcoins || USD (PayPal/Credit Card) || <br />
|-<br />
| [https://www.casascius.com Casascius.com] || Casascius Physical Bitcoins || BTC || <br />
|-<br />
| [https://www.giftcoin.net/card Bitcoin Gift Card] || Bitcioin Gift Card Physical Bitcoin Issued By GiftCoin || BTC || <br />
|-<br />
| [http://www.bitbills.com Bitbills] || Bitbills cards || BTC || Not taking orders as of Nov 2011.<br />
|}<br />
<br />
==See Also==<br />
<br />
* [[:Category:Digital_currencies|Digital Currencies]]<br />
* [[Selling bitcoins]]<br />
* [[Secure Trading]]<br />
* [[:Category:Local|Local]] exchanges<br />
<br />
[[Category:Exchanges]]<br />
[[Category:Introduction]]<br />
[[zh-cn:购买bitcoins]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=P2SH_Votes&diff=23259P2SH Votes2012-02-02T04:55:56Z<p>Phantomcircuit: </p>
<hr />
<div>'''PLEASE NOTE:''' This list is not yet complete, nor completely vetted by the parties listed for accuracy.<br />
<br />
These votes are based on the proposals themselves, ''not'' the implementation thereof.<br />
Therefore, voting is under the assumption of a mature implementation (eg, a few months of testing).<br />
<br />
{| class="wikitable"<br />
| {{No}} || not willing to consider as an option<br />
|-<br />
| {{Veryweak}} || something new based on this is better than nothing at all<br />
|-<br />
| {{Weak}} || better than nothing at all<br />
|-<br />
| {{Yes}} || it is a workable solution<br />
|-<br />
| {{Prefer}} || it is what he would choose if it was only up to him and no outside influences<br />
|}<br />
<br />
{| class="wikitable sortable"<br />
! Developer !! No P2SH Ever !! BIP 12 !! BIP 16 !! BIP 17 !! BIP 22<br />
|-<br />
| Gavin || {{No}} || {{No}} || {{Prefer}} || {{No}} ||<br />
|-<br />
| gmaxwell || {{No}} || {{Veryweak}} || {{Prefer}} || {{Yes}} ||<br />
|-<br />
| justmoon || || || {{Prefer}} || {{Yes}} ||<br />
|-<br />
| Luke || {{No}} || {{Weak}} || {{Veryweak}} || {{Prefer}} ||<br />
|-<br />
| p2k || {{No}} || {{Weak}} || {{Weak}} || {{Weak}} ||<br />
|-<br />
| roconnor || || {{No}} || {{Yes}} || {{Prefer}} ||<br />
|-<br />
| sipa || || || {{Prefer}} || {{Yes}} ||<br />
|-<br />
| phantomcircuit || {{No}} || {{No}} || ? || ? || ?<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=P2SH_Votes&diff=23253P2SH Votes2012-02-02T02:47:09Z<p>Phantomcircuit: </p>
<hr />
<div>'''PLEASE NOTE:''' This list is not yet complete, nor completely vetted by the parties listed for accuracy.<br />
<br />
These votes are based on the proposals themselves, ''not'' the implementation thereof.<br />
Therefore, voting is under the assumption of a mature implementation (eg, a few months of testing).<br />
<br />
{| class="wikitable"<br />
| {{No}} || not willing to consider as an option<br />
|-<br />
| {{Veryweak}} || something new based on this is better than nothing at all<br />
|-<br />
| {{Weak}} || better than nothing at all<br />
|-<br />
| {{Yes}} || it is a workable solution<br />
|-<br />
| {{Prefer}} || it is what he would choose if it was only up to him and no outside influences<br />
|}<br />
<br />
{| class="wikitable sortable"<br />
! Developer !! No P2SH Ever !! BIP 12 !! BIP 16 !! BIP 17 !! BIP 22<br />
|-<br />
| Gavin || {{No}} || {{No}} || {{Prefer}} || {{No}} ||<br />
|-<br />
| gmaxwell || {{No}} || {{Veryweak}} || {{Prefer}} || {{Yes}} ||<br />
|-<br />
| justmoon || || || {{Prefer}} || {{Yes}} ||<br />
|-<br />
| Luke || {{No}} || {{Weak}} || {{Veryweak}} || {{Prefer}} ||<br />
|-<br />
| p2k || {{No}} || {{Weak}} || {{Weak}} || {{Weak}} ||<br />
|-<br />
| roconnor || || {{No}} || {{Yes}} || {{Prefer}} ||<br />
|-<br />
| sipa || || || {{Prefer}} || {{Yes}} ||<br />
|-<br />
| phantomcircuit || {{No}} || {{No}} || {{No}} || {{No}} || ?<br />
|}</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Intersango/API&diff=22557Intersango/API2012-01-22T00:10:24Z<p>Phantomcircuit: Replaced content with "https://bitcoinconsultancy.com/wiki/Intersango/API"</p>
<hr />
<div>https://bitcoinconsultancy.com/wiki/Intersango/API</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Ideal_Properties_of_Digital_Commodities&diff=21927Ideal Properties of Digital Commodities2012-01-09T11:02:47Z<p>Phantomcircuit: </p>
<hr />
<div>Inspired by the thread: http://bitcointalk.org/index.php?topic=2966.0<br />
<br />
'''Ideal Properties of Decentralized Digital Commodity'''<br />
<br />
If we had the ability to design and implement an ideal form of digital commodity money, what would it look like? How does Bitcoin currently compare?<br />
<br />
it might seem like some of these things are mutually exclusive, but time and time again humans have made the "impossible" possible, so feel free to think hypothetically here.<br />
<br />
{| class="wikitable"<br />
|-<br />
! Property !! Ideal Implementation !! Bitcoin's Current Rating (A..F) !! Notes<br />
|-<br />
| Decentralized || no single point of failure or issuing authority || A.<br />
|-<br />
| Scarce || required to be a reasonable store of value || A.<br />
|-<br />
| Divisible || should be as close to infinitely divisible as possible || A. || 2,100,000,000,000,000 individual units (2.1 Quadrillion)<br />
|-<br />
| Storage || actual commodity should be cheap and easy to physically store securely || A.<br />
|-<br />
| Irreversible Transactions || transactions should be irreversible || B. || irreversible after an hour, often not acceptable wait time<br />
|-<br />
| Anonymous || untraceable transactions (if desired) || C. || currently requires some trusted third party to obsfucate transactions<br />
|-<br />
| Unspoofable || should be exceedingly difficult to counterfeit || A.<br />
|-<br />
| Verifiable Funds** || publicly auditable balances, with account holder's permission, to verify funds before making a transaction or make sure that a third party has not moved your funds || C. || since permission is not required<br />
|-<br />
| Gratis Transactions || transactions should be gratis, or nearly so, forever || D || bitcoin future tx fees are certain, but could remain low<br />
|-<br />
| Unique Use-Value? || ideally a commodity should have a unique non-monetary use-value || D || BTC is the only currency that can be used to pay for storing data in the block chain, which is useful for secure timestamping. Competing block chains would probably not have the required incentives for generating that Bitcoin does.<br />
|-<br />
| Offline Transactions || ideally two participants should be able to safely transact without requiring internet access or trust of one another (like normal cash) || C || Bitcoin can be used in off-line transactions using physical representations, like [[Casascius physical bitcoins]] and [[Bitbills]], that give parties an assurance, through producing tamper evidence upon redemption, that the bitcoins they represent have not been spent<br />
|- <br />
|Speed || ideally transactions would be instantaneous || B || For large values, bitcoin is fast enough only for shipments; anything faster than an hour on average requires compromising security. For small transactions, bitcoin can be practically considered instantaneous since the security risks from an unconfirmed transaction are low<br />
|- <br />
|Scalability || usable for every transaction everywhere in the world || A || The existence of lightwieight and offline transactions (e.g. Casascius Coins and Bitbills) can replace the need for conventional cash<br />
|- <br />
|Stability || value in the future is predictable, within reasonable bounds || D || Bitcoin value is highly volatile, with no mechanisms to encourage stability or avoid bubbles. Supply is pre-determined, which eliminates some uncertainty from future value.<br />
|}<br />
\**May not be a necessary property. Thinking it would be cool if a known address could be audited via a tool like blockexplorer.com but if the coins are moved from that address, they are untraceable.<br />
<br />
[[Category:Economics]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Buying_bitcoins&diff=21912Buying bitcoins2012-01-09T06:14:06Z<p>Phantomcircuit: reflect updated volumes</p>
<hr />
<div>One issue currently facing a newcomer to bitcoin is, how do I get some? While there is the [[bitcoin faucet]] that can get you started with a small fraction of a coin, when getting larger amounts the user faces an abundance of choice. This page will cut through the clutter, and help direct you to the right exchanger for your needs.<br />
<br />
==Major Exchanges==<br />
<br />
The least expensive methods for buying bitcoins involve transferring funds using a bank wire, ACH, bank transfer (ACH, EUR / SEPA).<br />
<br />
{| class="wikitable"<br />
|-<br />
| Exchange || Type || Adding Funds || Withdrawing Funds || [[eWallet]] || Notes<br />
|-<br />
| [[MtGox]] || Market || BTC<br/>BTC (Redeemable code)<br />USD ([[Dwolla]])<br />USD (International bank wire)<br />USD (Wire to [[AurumXChange Company|AurumXChange]])<br />AUD (Bank wire)<br />GBP (Bank wire)<br />USD (Redeemable code)<br />Liberty Reserve USD || BTC<br />BTC (Redeemable code)<br />USD ([[Dwolla]])<br />USD (Wire via [[AurumXChange Company|AurumXChange]])<br />USD (Check via [[Paxum]])<br />USD (ATM via [[Paxum]])<br />USD (wire via [[Paxum]])<br />AUD (Bank wire)<br />USD (Redeemable code)<br />Liberty Reserve USD<br />Liberty Reserve USD (via AurumXChange) || {{Table Value Yes}} || Oldest running exchange. Higest daily volume. Respecting AML laws, Restrictions and limits on withdrawals.<br />
|-<br />
| [[TradeHill]] || Market || BTC<br/>USD (Domestic bank wire via [[OKPAY]])<br>USD (International bank wire)<br/>USD (Check via [[Paxum]])<br />USD (wire via [[Paxum]])<br />EUR (via [[Paxum]]<br />CAD (via [[Paxum]]<br />CLP (Bank transfer)<br />PEN (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || BTC<br/>USD (Domestic bank wire)<br/>USD (International bank wire)<br />USD (Direct deposit / ACH)<br />USD (Check via [[Paxum]])<br />USD (ATM via [[Paxum]])<br />USD (Prepaid card via [[Paxum]])<br />EUR (via [[Paxum]]<br />CAD (via [[Paxum]])<br />CLP (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || {{Table Value Yes}} || <br />
|-<br />
| [[Britcoin]]<br/>&amp;<br/>[[Intersango]] || Market || BTC<br />GBP (bank deposit)<br/>USD ([[Dwolla]])<br />USD (Domestic bank wire)<br />USD (ACH)<br />PLN (Bank Wire) || BTC<br />GBP (bank transfer)<br/>USD ([[Dwolla]])<br />PLN (Bank Wire) || {{Table Value Yes}} || Operated by the [https://bitcoinconsultancy.com/ BitcoinConsultancy] <br/> [https://intersango.com Intersango] is a completely custom trading platform built from the ground up with security, scalability and extensibility in mind. [https://bitcointalk.org/index.php?topic=43745.0 More Information]<br/><br/>Boasts an [https://bitcoinconsultancy.com/wiki/index.php/Intersango/API ever expanding API]<br />
|-<br />
| [[VirWoX]] || Market || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br/>USD,EUR,GBP (Credit & Debit cards via [[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (DIRECTebanking / Sofortüberweisung)<br/>USD,EUR,GBP,CHF ([[paysafecard]])<br/>EUR (SEPA bank transfer) || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br />USD,EUR,GBP ([[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (SEPA bank transfer) || {{Table Value Yes}} || Trading through Second Life Linden Dollars.<br/>Variable limits on PayPal and Credit Card deposits. <br />
|-<br />
| [[BTC-E]] || Market || BTC<br/>USD ([[Liberty Reserve]])<br />USD (Interkassa) || BTC<br/>USD (Webmoney) || {{Table Value Yes}} || Language: Russian. Interkassa can be funded from Webmoney and many other methods.<br />
|-<br />
| [[BitChange.pl]] || Market || BTC<br />PLN (Bank wire) || BTC<br />PLN (Bank wire) || {{Table Value Yes}} ||<br />
|-<br />
| [[VirtEx]] || Market || BTC<br/>CAD (online bill pay)<br />CAD (cash at TDBank) || BTC<br/>CAD (direct deposit) || {{Table Value Yes}} ||<br />
|-<br />
| [[Camp BX]] (CBX) || Market || BTC <br/>USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || BTC <br />USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || {{Table Value Yes}} || <ul> <li> Security certification from McAfee</li><li> Advanced trading options with AON/FOK/Market</li> <li>STOPLOSS and Short-Selling in Pipeline</li><li> Trading API available</li><li> Wallet API available </li><li> CBX Instant Bitcoin Transfers Feature </li><li> Stoploss / Custom Order Expiry Date/Time </li><li> SMS (Text Message) Notifications </li> <li> Two-Factor Authentication </li> <li> Based in USA - Atlanta </li> </ul> <br />
|-<br />
| [[Mercado Bitcoin]] || Market || BTC<br/>BRL (Bank transfer)<br />BRL (Bank transfer - MoIP)<br />Liberty Reserve USD || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[Bitcoin-Central]] || Market || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />CAD (Cash deposit)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />PGAU [[Pecunix]] Gold || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />[[Pecunix]] Gold || {{Table Value Yes}} || [https://github.com/davout/bitcoin-central Open-source], community reviewed platform<br />Available in French and English languages<br />
|-<br />
| [[HelloBitcoin]] || Market || BTC<br/>USD (Dwolla)<br />USD (Bank wire)<br />USD (Check) || BTC<br/>USD (Check)<br />USD (Bank wire)<br />USD (ACH) || {{Table Value Yes}} || Offers margin trading and shorting.<br />
|-<br />
| [[Brasil Bitcoin Market]] || Market || BTC<br/>BRL (Bank transfer - MoIP) || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[Australian Bitcoin Exchange]] || Market || BTC<br />AUD (Electronic funds deposit)<br />AUD (Mtgox Redeemable code) || BTC<br />AUD (Electronic funds transfer) || {{Table Value Yes}} ||<br />
|-<br />
| [[BitStamp]] || Market || BTC<br />BTC (Redeemable code)<br />EUR (SEPA transfer)<br />USD (Intl wire)<br />USD (Redeemable code)<br />CHF || BTC<br />BTC (Redeemable code)<br />EUR (SEPA transfer)<br />USD (Intl wire)<br />USD (Redeemable code)<br />CHF || {{Table Value Yes}} || EUR and CHF deposits converted to/from USD for trading<br />
|-<br />
| [[Rock Currency Exchange]] || Market || BTC<br/>EUR (SEPA transfer)<br />SLL (Second Life)<br />USD (Dwolla) || BTC<br/>EUR (SEPA transfer)<br />SLL (Second Life)<br />USD (Dwolla) || {{Table Value Yes}} || <br />
|-<br />
| [[CryptoXchange]] || Market || BTC<br/>NMC<br/>LTC<br/>USD<br/>AUD (Bank Transfer)<br/>GBP || BTC<br/>NMC<br/>LTC<br/>USD<br/>AUD (Bank Transfer)<br/>GBP || {{Table Value Yes}} || <ul> <li> Buy Gold,Silver,Palladium and Casascius physical bitcoins plus other items in the store.</li> <li> Affiliate program.</li> <li> Mining Pool integration program.</li> <li> Bitcoin, Namecoin and Litecoin </li> <li>Multiple Authentication Levels</li> <li> API </li> <li> Free Yubikey's to High Volume Traders </li> <li> An Australian Owned and Operated Registered Company.</li> <li><br />
Inquiries: contact@cryptoxchanger.com or Phone: +61280050602 </li> </ul><br />
|-<br />
| [[WM-Center]] || Exchanger || BTC<br/>USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP || BTC<br />USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP<br /> PayPal USD/EUR, Moneybookers, Neteller || {{Table Value No}} || 24/7/365 support in english, spanish and russian!<br />
|-<br />
| [[bitNZ]] || Market || BTC<br/>NZD (Domestic bank transfer) || BTC<br/>NZD (Domestic bank transfer) || {{Table Value Yes}} || <br />
|}<br />
<br />
==Fixed Rate Exchanges & Others==<br />
<br />
For smaller amounts, the options are limited due to bank transfer fees, conversion fees and transaction size restrictions. Options include:<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment Method || Notes<br />
|-<br />
| [[Bitcoinmarket24.com]] || Fixed Rate || EUR (SEPA bank transfer) || Instant Bitcoin purchases via SEPA. No registration needed!<br />
|-<br />
| [[Blizzcoin]] || Fixed Rate || EUR (SEPA bank transfer) || Buy Bitcoins within minutes. Instant exchange. <br />No registration.<br />
|-<br />
| [[Bitcoin Market]] || Market || USD (Liberty Reserve)<br />USD (MoneyBookers)<br />GAU (Pecunix) || Varies (person to person)<br />
|-<br />
| [[bitcoins.aunz.ws]] || Fixed Rate || AUD || cash deposit at NAB <br />
|-<br />
| [[BitMarket.eu]] || Market || EUR (Euro)<br />GBP (British Sterling Pound)<br />USD (U.S. Dollar)<br>PLN (Polish złoty)<br />AUD (Australian Dollar)<br />CAD (Canadian Dollar)<br />ZAR (South African Rand)<br />ILS (Israeli Shekel)<br />CHF (Swiss Franc)<br>RUB (Russian Ruble) || Varies (person to person)<br />
|-<br />
| [[Bitcoiny.cz]] || Market || CZK || Varies (person to person)<br />
|-<br />
| [[Bit]] / BTC China || Market || n/a || n/a<br />
|-<br />
| [[Bitfunnel]] || Credit Card payment exchange/brokering services || Varies (person to person)<br />
|-<br />
| [[bitcoin-otc|#bitcoin-otc]] || [http://bitcoin-otc.com/vieworderbook.php Order Book] || Varies (person to person) || IRC trading marketplace will usually have people willing to deal for small and larger amounts using various payment methods, including [[PayPal]], [[Dwolla]], [[Linden Dollars]], etc.<br />
|-<br />
| [[Lilion Transfer]] || Fixed Rate || USD (Liberty Reserve)<br />[[Pecunix]] || <br />
|-<br />
| [[Nanaimo Gold]] || Fixed Rate || USD (Liberty Reserve)<br />Western Union money transfer<br />Moneygram money transfer<br />Cash in the mail || LR <--> Bitcoin exchange is automated<br />For cash in the mail send USD, EUR, CAD, or GBP. Canada mailing address.<br />
|-<br />
| [[Bitcoin Argentina]] || Fixed Rate || Cash: ARS, BRL, USD <br /> Bank transfer: ARS || No exchange fees!<br />
|-<br />
| [[Bitcoin.com.es]] || Fixed Rate || EUR (bank deposit) || Bank transfer or cash deposits at OpenBank in Spain.<br />
|-<br />
| [[Bahtcoin]] || Fixed Rate || Cash, Webmoney<br />Liberty Reserve USD || Will cash out to Thai mobile and gaming prepaid cards as well.<br />
|-<br />
| [[Bitcoin Brasil]] || Fixed Rate || BRL (Brazilian Real)<br />USD || Cash exchange<br />
|-<br />
| [[BitPiggy]] || Fixed Rate || AUD (Australian Dollar)|| Payment via bank transfer.<br />
|-<br />
| [[GetBitcoin]] || Fixed Rate || USD (Dwolla)<BR />USD (Cash deposit)<br />USD (Bank wire)<BR />USD (Cash in the mail)<BR />USD (Money Order)<BR />USD (Cashier's Check/Certified Check)<BR />USD (Western Union)<BR />USD (Traveler's Check)<BR />USD (Prepaid Debit Card)<BR /> || For cash in mail, send USD. U.S. mailing address.<br />
|-<br />
| [[Bitcoin 4 Cash]] || Fixed Rate || Cash in the mail || Send USD or CAD. Canada mailing address.<br />
|-<br />
| [[Bitcoin2Cash]] || Fixed Rate || Cash in the mail || Send USD. U.S. mailing address.<br />
|-<br />
| [[bitcoin.local]] || Directory || Varies (person to person) ||<br />
|-<br />
| [[bcchanger.com]] || Directory || Enables person to person purchases and sales via PayPal, MoneyBookers and other e-currency platforms ||<br />
|-<br />
| [[SimpleCoin]] || Fixed Rate || USD|| Payment via credit or debit card.<br />
|-<br />
| [[YouTipIt]] || Fixed Rate || USD<br />EUR<br />GBP || Purchase bitcoins to add to your balance with YouTipIt using credit card through ClickAndBuy.<br />
|-<br />
| [[Ubitex]] || In person exchange || Varies (person to person) ||<br />
|-<br />
| [[Bitcoil]] || Fixed Rate || ILS (bank transfer) ||<br />
|- <br />
|[[Accesscoin]] || Fixed Rate || USD (Google Checkout) || Requires Facebook account for second factor authentication (offline Jan062012) ||<br />
|-<br />
|[[btcnow]] || Fixed Rate || USD (OKPay) || Currently NO coins available bitcoins for sale (Jan062012)<br />
|-<br />
|[http://www.Btc-Direct.fr Btc-Direct] || Market || Paid by phone or SMS<br />USD<br />EUR<br />GBP || Incredible: Purchase your Bitcoins with your phone !!. We are the first to offer you the easiest way to buy Bitcoins.<br />
|}<br />
<br />
==Other Financial Services==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment || Settled || Notes<br />
|-<br />
| [http://polimedia.us/bitcoin/options.php Derivatives] || Buy / Sell / Exercise CALLs / PUTs, American style.<br />52 strikes offered (by .5), current month + 2.<br /> No shorting available yet.|| BTC || BTC || Transactions encoded via amt.<br /> Must use non-rounding client<br />(0.3.24 or later)<br />
|-<br />
| [https://vircurex.com Vircurex] || Buy / Sell Options<br/>Loan / Borrow || BTC, NMC, LTC, DVC, GG, I0C, IXC, SC || BTC, NMC, LTC, DVC, GG, I0C, IXC, SC ||<br />
|}<br />
<br />
==Physical Bitcoins==<br />
<br />
Physical Bitcoins are bearer tokens that have an embedded redeemable digital bitcoin value if torn open. While they are somewhat expensive if bought purely for the digital bitcoins, they are relatively easy to get, because they can be purchased with PayPal or credit card - payment methods not typically not accepted for pure digital bitcoin purchases.<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment || Notes<br />
|-<br />
| [http://www.memorydealers.com Memory Dealers] || Casascius Physical Bitcoins || USD (PayPal/Credit Card) || <br />
|-<br />
| [https://www.casascius.com Casascius.com] || Casascius Physical Bitcoins || BTC || <br />
|-<br />
| [http://www.bitbills.com Bitbills] || Bitbills cards || BTC || Not taking orders as of Nov 2011.<br />
|}<br />
<br />
==See Also==<br />
<br />
* [[:Category:Digital_currencies|Digital Currencies]]<br />
* [[Selling bitcoins]]<br />
* [[Secure Trading]]<br />
* [[:Category:Local|Local]] exchanges<br />
<br />
[[Category:Exchanges]]<br />
[[Category:Introduction]]<br />
[[zh-cn:购买bitcoins]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Selling_bitcoins&diff=20308Selling bitcoins2011-12-02T00:35:09Z<p>Phantomcircuit: </p>
<hr />
<div>==Major Exchanges==<br />
The best rates for selling medium to large amounts of bitcoins generally when withdrawing from an exchange using a cash method such as a bank transfer (ACH, EUR/SEPA).<br />
<br />
{| class="wikitable"<br />
|-<br />
| Exchange || Type || Adding Funds || Withdrawing Funds || [[eWallet]] || Notes<br />
|-<br />
| [[MtGox]] || Market || BTC<br/>USD ([[Dwolla]])<br />USD (International bank wire)<br />USD (Wire to [[AurumXChange Company|AurumXChange]])<br />EUR (SEPA bank transfer)<br />AUD (Bank wire)<br />GBP (Bank wire)<br />Liberty Reserve USD || BTC<br />USD ([[Dwolla]])<br />USD (Wire via [[AurumXChange Company|AurumXChange]])<br />USD (Check via [[Paxum]])<br />USD (ATM via [[Paxum]])<br />USD (wire via [[Paxum]])<br />EUR (SEPA bank transfer)<br />AUD (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve USD (via AurumXChange) || {{Table Value Yes}} || Restrictions and limits on withdrawals.<br />
|-<br />
| [[TradeHill]] || Market || BTC<br/>USD (Domestic bank wire)<br>USD (International bank wire)<br/>USD ([[Paxum]])<br />EUR (via [[Paxum]])<br />CAD (via [[Paxum]])<br />CLP (Bank transfer)<br />PEN (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || BTC<br/>USD (Domestic bank wire)<br/>USD (International bank wire)<br />USD (Direct deposit / ACH)<br />USD ([[Paxum]])<br />EUR (via [[Paxum]])<br />CAD (via [[Paxum]])<br />CLP (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || {{Table Value Yes}} || <br />
|-<br />
| [[VirWoX]] || Market || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br/>USD,EUR,GBP (Credit & Debit cards via [[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (DIRECTebanking / Sofortüberweisung)<br/>USD,EUR,GBP,CHF ([[paysafecard]])<br/>EUR (SEPA bank transfer) || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br />USD,EUR,GBP ([[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (SEPA bank transfer) || {{Table Value Yes}} || Trading through Second Life Linden Dollars (highly liquid).<br/>Variable limits on PayPal and Credit Card deposits. <br />
|-<br />
| [[Intersango]]([[Britcoin]]) || Market || BTC<br />GBP (bank deposit)<br />USD ([[Dwolla]])<br />USD (Domestic bank wire)<br />USD (ACH)<br />EUR (SEPA bank deposit) || BTC<br />GBP (bank deposit)<br />USD ([[Dwolla]])<br />EUR (SEPA bank transfer) || {{Table Value Yes}} ||<br />
|-<br />
| [[BTC-E]] || Market || BTC<br/>USD ([[Liberty Reserve]])<br />USD (Interkassa) || BTC<br/>USD (Webmoney) || {{Table Value Yes}} || Language: Russian. Interkassa can be funded from Webmoney and many other methods.<br />
|-<br />
| [[VirtEx]] || Market || BTC<br/>CAD (online bill pay)<br />CAD (cash at TDBank) || BTC<br/>CAD (direct deposit) || {{Table Value Yes}} ||<br />
|-<br />
| [[Camp BX]] (CBX) || Market || BTC <br />USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || BTC <br />USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || {{Table Value Yes}} || <ul> <li> Security certification from McAfee</li><li> Advanced trading options with AON/FOK/Market</li> <li>STOPLOSS and Short-Selling in Pipeline</li><li> Trading API available</li><li> Wallet API available </li><li> CBX Instant Bitcoin Transfers Feature </li><li> Stoploss / Custom Order Expiry Date/Time </li><li> SMS (Text Message) Notifications </li> <li> Two-Factor Authentication </li> <li> Based in USA - Atlanta </li> </ul> <br />
|-<br />
| [[Australian Bitcoin Exchange]] || Market || BTC<br />AUD (Electronic funds deposit) || BTC<br />AUD (Electronic funds transfer) || {{Table Value Yes}} || Restrictions and limits on withdrawals.<br /> Two-Factor Authentication<br /> Based in Queensland, Australia.<br /> Intersango Software.<br />
|-<br />
| [[BitStamp]] || Market || BTC<br />EUR (SEPA transfer) || BTC<br />EUR (SEPA transfer) || {{Table Value Yes}} || EUR deposits converted to/from USD for trading<br />
|-<br />
| [[Bitcoin-Central]] || Market || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />CAD (Cash deposit)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />PGAU [[Pecunix]] Gold || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />[[Pecunix]] Gold || {{Table Value Yes}} || [https://github.com/davout/bitcoin-central Open-source], community reviewed platform<br />Available in French and English languages<br />
|-<br />
| [[HelloBitcoin]] || Market || BTC<br/>USD (Cwolla)<br />USD (Bank wire)<br />USD (Check) || BTC<br/>USD (Check)<br />USD (Bank wire)<br />USD (ACH) || {{Table Value Yes}} || Offers margin trading and shorting.<br />
|-<br />
| [[Mercado Bitcoin]] || Market || BTC<br/>BRL (Bank transfer)<br />BRL (Bank transfer - MoIP)<br />Liberty Reserve USD || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[Brasil Bitcoin Market]] || Market || BTC<br/>BRL (Bank transfer - MoIP) || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[BitChange.pl]] || Market || BTC<br />PLN (Bank wire) || BTC<br />PLN (Bank wire) || {{Table Value Yes}} ||<br />
|-<br />
| [[FreshBTC]] || Market || BTC<br />PLN (Bank wire) || BTC<br />PLN (Bank wire) || {{Table Value Yes}} ||<br />
|-<br />
| [[Rock Currency Exchange]] || Market || BTC<br/>SLL (Second Life)<br/>USD ([[Dwolla]])<br/>EUR (SEPA bank transfer) || BTC<br/>SLL (Second Life)<br/>USD ([[Dwolla]])<br/>EUR (SEPA bank transfer) || {{Table Value Yes}} || <br />
|-<br />
| [[WM-Center]] || Exchanger || BTC<br/>USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP || BTC<br />USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP<br /> PayPal USD/EUR, Moneybookers, Neteller || {{Table Value No}} || 24/7/365 support in english, spanish and russian!<br />
|-<br />
| [[bitNZ]] || Market || BTC<br/>NZD (Domestic bank transfer) || BTC<br/>NZD (Domestic bank transfer) || {{Table Value Yes}} || <br />
|}<br />
<br />
==Fixed Rate Exchanges & Others==<br />
<br />
The following exchanges are either exchanges using a fixed rate based on other markets or are exchanges that enable you to redeem smaller amounts of bitcoins at reasonable rates:<br />
<br />
* [[AutoMtGox]] Convert your bitcoins to US Dollars automatically.<br />
* [[Bitcoin Market]] Trade your BTCs for MoneyBookers, Liberty Reserve or Pecunix.<br />
* [[BitMarket.eu]] Trade your BTCs for EUR (SEPA bank transfer), GBP, USD, PLN, AUD, CAD, ZAR, ILS, CHF, and RUB as OTC with BTC Escrow.<br />
* [[Bitcoiny.cz]] Trade your BTCs for CZK. No-escrow, direct person-to-person trading.<br />
* [[Bit]] / BTC China - Market for exchanging bitcoins to and from CNY.<br />
* [[bitcoin-otc]] IRC trading marketplace will usually have people willing to deal for small and larger amounts using various payment methods, including [[PayPal]], [[Dwolla]], [[Linden Dollars]], etc.<br />
* [[Lilion Transfer]] Exchanges bitcoins for Liberty Reserve, [[Pecunix]], [[AlertPay]], [[Moneybookers]], [[PayPal]], and more.<br />
* [[Nanaimo Gold]] Redeem bitcoins for Liberty Reserve (automated) or for money transfer, money order or direct deposit within Canada.<br />
* [[Bitcoin Argentina]] Trades BTC for ARS. Cash and bank transfer. No exchange fees.<br />
* [[Bahtcoin]] Trade BTC for Thai Baht, cash, LR, Webmoney, or Thai mobile and gaming prepaid cards.<br />
* [[Bitcoin Brasil]] Cash exchange that redeems bitcoins for BRL, USD.<br />
* [[Bitcoin.com.es]] Trade your BTCs for EUR (Bank transfer).<br />
* [[BitPiggy]] Trade your BTCs for AUD (Bank transfer).<br />
* [[GetBitcoin]] Trade your BTCs for USD (Cash, Check or Bank Wire).<br />
* [[Bitcoin2Cash]] Redeems bitcoins with cash mailed to you<br />
* [[Bitcoin 2 Credit Card]] purchase virtual VISA prepaid cards with bitcoins<br />
* [[Bitcoin 4 Cash]] Redeems bitcoins with cash mailed to you<br />
* [[Bitcoin Cashout]] purchase virtual prepaid cards with bitcoins<br />
* [[btcbuy|BTC Buy]] Simple interface to trade your BTCs for Amazon, Buy.com, NewEgg, and Walmart gift cards<br />
* [[bitcoin.local]] arranges for exchanging currencies in person with someone nearby<br />
* [[Ubitex]] In-person exchange<br />
* [[Bitcoil]] Exchange BTC for ILS with bank transfers in Israel<br />
<br />
==See Also==<br />
<br />
* [[:Category:Digital currencies|Digital currencies]]<br />
* [[Buying bitcoins]]<br />
* [[Secure Trading]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Selling_bitcoins&diff=20307Selling bitcoins2011-12-02T00:29:45Z<p>Phantomcircuit: </p>
<hr />
<div>==Major Exchanges==<br />
The best rates for selling medium to large amounts of bitcoins generally when withdrawing from an exchange using a cash method such as a bank transfer (ACH, EUR/SEPA).<br />
<br />
{| class="wikitable"<br />
|-<br />
| Exchange || Type || Adding Funds || Withdrawing Funds || [[eWallet]] || Notes<br />
|-<br />
| [[MtGox]] || Market || BTC<br/>USD ([[Dwolla]])<br />USD (International bank wire)<br />USD (Wire to [[AurumXChange Company|AurumXChange]])<br />EUR (SEPA bank transfer)<br />AUD (Bank wire)<br />GBP (Bank wire)<br />Liberty Reserve USD || BTC<br />USD ([[Dwolla]])<br />USD (Wire via [[AurumXChange Company|AurumXChange]])<br />USD (Check via [[Paxum]])<br />USD (ATM via [[Paxum]])<br />USD (wire via [[Paxum]])<br />EUR (SEPA bank transfer)<br />AUD (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve USD (via AurumXChange) || {{Table Value Yes}} || Restrictions and limits on withdrawals.<br />
|-<br />
| [[TradeHill]] || Market || BTC<br/>USD (Domestic bank wire)<br>USD (International bank wire)<br/>USD (Check via [[Paxum]])<br />USD (wire via [[Paxum]])<br />EUR (SEPA bank transfer)<br />EUR (via [[Paxum]]<br />CAD (via [[Paxum]]<br />CLP (Bank transfer)<br />PEN (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || BTC<br/>USD (Domestic bank wire)<br/>USD (International bank wire)<br />USD (Direct deposit / ACH)<br />USD (Check via [[Paxum]])<br />USD (ATM via [[Paxum]])<br />USD (Prepaid card via [[Paxum]])<br />EUR (SEPA bank transfer)<br />EUR (via [[Paxum]]<br />CAD (via [[Paxum]])<br />CLP (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || {{Table Value Yes}} || <br />
|-<br />
| [[VirWoX]] || Market || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br/>USD,EUR,GBP (Credit & Debit cards via [[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (DIRECTebanking / Sofortüberweisung)<br/>USD,EUR,GBP,CHF ([[paysafecard]])<br/>EUR (SEPA bank transfer) || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br />USD,EUR,GBP ([[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (SEPA bank transfer) || {{Table Value Yes}} || Trading through Second Life Linden Dollars (highly liquid).<br/>Variable limits on PayPal and Credit Card deposits. <br />
|-<br />
| [[Intersango]]([[Britcoin]]) || Market || BTC<br />GBP (bank deposit)<br />USD ([[Dwolla]])<br />USD (Domestic bank wire)<br />USD (ACH)<br />EUR (SEPA bank deposit) || BTC<br />GBP (bank deposit)<br />USD ([[Dwolla]])<br />EUR (SEPA bank transfer) || {{Table Value Yes}} ||<br />
|-<br />
| [[BTC-E]] || Market || BTC<br/>USD ([[Liberty Reserve]])<br />USD (Interkassa) || BTC<br/>USD (Webmoney) || {{Table Value Yes}} || Language: Russian. Interkassa can be funded from Webmoney and many other methods.<br />
|-<br />
| [[VirtEx]] || Market || BTC<br/>CAD (online bill pay)<br />CAD (cash at TDBank) || BTC<br/>CAD (direct deposit) || {{Table Value Yes}} ||<br />
|-<br />
| [[Camp BX]] (CBX) || Market || BTC <br />USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || BTC <br />USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || {{Table Value Yes}} || <ul> <li> Security certification from McAfee</li><li> Advanced trading options with AON/FOK/Market</li> <li>STOPLOSS and Short-Selling in Pipeline</li><li> Trading API available</li><li> Wallet API available </li><li> CBX Instant Bitcoin Transfers Feature </li><li> Stoploss / Custom Order Expiry Date/Time </li><li> SMS (Text Message) Notifications </li> <li> Two-Factor Authentication </li> <li> Based in USA - Atlanta </li> </ul> <br />
|-<br />
| [[Australian Bitcoin Exchange]] || Market || BTC<br />AUD (Electronic funds deposit) || BTC<br />AUD (Electronic funds transfer) || {{Table Value Yes}} || Restrictions and limits on withdrawals.<br /> Two-Factor Authentication<br /> Based in Queensland, Australia.<br /> Intersango Software.<br />
|-<br />
| [[BitStamp]] || Market || BTC<br />EUR (SEPA transfer) || BTC<br />EUR (SEPA transfer) || {{Table Value Yes}} || EUR deposits converted to/from USD for trading<br />
|-<br />
| [[Bitcoin-Central]] || Market || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />CAD (Cash deposit)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />PGAU [[Pecunix]] Gold || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />[[Pecunix]] Gold || {{Table Value Yes}} || [https://github.com/davout/bitcoin-central Open-source], community reviewed platform<br />Available in French and English languages<br />
|-<br />
| [[HelloBitcoin]] || Market || BTC<br/>USD (Cwolla)<br />USD (Bank wire)<br />USD (Check) || BTC<br/>USD (Check)<br />USD (Bank wire)<br />USD (ACH) || {{Table Value Yes}} || Offers margin trading and shorting.<br />
|-<br />
| [[Mercado Bitcoin]] || Market || BTC<br/>BRL (Bank transfer)<br />BRL (Bank transfer - MoIP)<br />Liberty Reserve USD || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[Brasil Bitcoin Market]] || Market || BTC<br/>BRL (Bank transfer - MoIP) || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[BitChange.pl]] || Market || BTC<br />PLN (Bank wire) || BTC<br />PLN (Bank wire) || {{Table Value Yes}} ||<br />
|-<br />
| [[FreshBTC]] || Market || BTC<br />PLN (Bank wire) || BTC<br />PLN (Bank wire) || {{Table Value Yes}} ||<br />
|-<br />
| [[Rock Currency Exchange]] || Market || BTC<br/>SLL (Second Life)<br/>USD ([[Dwolla]])<br/>EUR (SEPA bank transfer) || BTC<br/>SLL (Second Life)<br/>USD ([[Dwolla]])<br/>EUR (SEPA bank transfer) || {{Table Value Yes}} || <br />
|-<br />
| [[WM-Center]] || Exchanger || BTC<br/>USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP || BTC<br />USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP<br /> PayPal USD/EUR, Moneybookers, Neteller || {{Table Value No}} || 24/7/365 support in english, spanish and russian!<br />
|-<br />
| [[bitNZ]] || Market || BTC<br/>NZD (Domestic bank transfer) || BTC<br/>NZD (Domestic bank transfer) || {{Table Value Yes}} || <br />
|}<br />
<br />
==Fixed Rate Exchanges & Others==<br />
<br />
The following exchanges are either exchanges using a fixed rate based on other markets or are exchanges that enable you to redeem smaller amounts of bitcoins at reasonable rates:<br />
<br />
* [[AutoMtGox]] Convert your bitcoins to US Dollars automatically.<br />
* [[Bitcoin Market]] Trade your BTCs for MoneyBookers, Liberty Reserve or Pecunix.<br />
* [[BitMarket.eu]] Trade your BTCs for EUR (SEPA bank transfer), GBP, USD, PLN, AUD, CAD, ZAR, ILS, CHF, and RUB as OTC with BTC Escrow.<br />
* [[Bitcoiny.cz]] Trade your BTCs for CZK. No-escrow, direct person-to-person trading.<br />
* [[Bit]] / BTC China - Market for exchanging bitcoins to and from CNY.<br />
* [[bitcoin-otc]] IRC trading marketplace will usually have people willing to deal for small and larger amounts using various payment methods, including [[PayPal]], [[Dwolla]], [[Linden Dollars]], etc.<br />
* [[Lilion Transfer]] Exchanges bitcoins for Liberty Reserve, [[Pecunix]], [[AlertPay]], [[Moneybookers]], [[PayPal]], and more.<br />
* [[Nanaimo Gold]] Redeem bitcoins for Liberty Reserve (automated) or for money transfer, money order or direct deposit within Canada.<br />
* [[Bitcoin Argentina]] Trades BTC for ARS. Cash and bank transfer. No exchange fees.<br />
* [[Bahtcoin]] Trade BTC for Thai Baht, cash, LR, Webmoney, or Thai mobile and gaming prepaid cards.<br />
* [[Bitcoin Brasil]] Cash exchange that redeems bitcoins for BRL, USD.<br />
* [[Bitcoin.com.es]] Trade your BTCs for EUR (Bank transfer).<br />
* [[BitPiggy]] Trade your BTCs for AUD (Bank transfer).<br />
* [[GetBitcoin]] Trade your BTCs for USD (Cash, Check or Bank Wire).<br />
* [[Bitcoin2Cash]] Redeems bitcoins with cash mailed to you<br />
* [[Bitcoin 2 Credit Card]] purchase virtual VISA prepaid cards with bitcoins<br />
* [[Bitcoin 4 Cash]] Redeems bitcoins with cash mailed to you<br />
* [[Bitcoin Cashout]] purchase virtual prepaid cards with bitcoins<br />
* [[btcbuy|BTC Buy]] Simple interface to trade your BTCs for Amazon, Buy.com, NewEgg, and Walmart gift cards<br />
* [[bitcoin.local]] arranges for exchanging currencies in person with someone nearby<br />
* [[Ubitex]] In-person exchange<br />
* [[Bitcoil]] Exchange BTC for ILS with bank transfers in Israel<br />
<br />
==See Also==<br />
<br />
* [[:Category:Digital currencies|Digital currencies]]<br />
* [[Buying bitcoins]]<br />
* [[Secure Trading]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Popmoney&diff=18802Popmoney2011-11-03T00:17:31Z<p>Phantomcircuit: </p>
<hr />
<div>'''Popmoney''' is an e-commerce business allowing payments and money transfers to be made through the Internet.<br />
<br />
A Popmoney account is used to receive money from another Popmoney customer. After funds are received in a Popmoney account the funds can be held until they are withdrawn to a U.S. bank account. The Popmoney account may instead be configured to automatically have all funds received automatically sent to the account holder's bank.<br />
<br />
Anyone can receive Popmoney, however the funds received are accessible only to those who have a bank account in the U.S. The website for the account holder's bank is the method used to transfer money to a Popmoney customer. The banks that offer the ability to send Popmoney include Citibank, US Bank, PNC Bank, Ally and [http://www.popmoney.com/popapp/faces/popmoney/common/about.jsp?name=partners many others].<br />
<br />
The Popmoney recipient is notified immediately when funds are sent. Withdrawn funds are sent as ACH transactions and will take two to three days, or more, before the funds to appear in the recipient's bank account.<br />
<br />
==Fees==<br />
<br />
There are no fees for sending or receiving using Popmoney.<br />
<br />
==History==<br />
<br />
On June 29, 2011 FiServ announced that it is acquiring CashEdge, which is the company that provides the PopMoney service. [[Dwolla]]'s service uses FiServ, though it is not known if PopMoney will be available as a method for funding Dwolla accounts.<br />
<br />
==See Also==<br />
<br />
* [[Buying bitcoins]]<br />
* [[Selling bitcoins]]<br />
* [[Secure Trading]]<br />
* [[PayPal]]<br />
* [[Dwolla]]<br />
<br />
==External Links==<br />
* [http://www.popmoney.com Popmoney] web site<br />
* [http://www.popmoney.com/popapp/faces/popmoney/common/about.jsp?name=partners List of banks] offering Popmoney service<br />
<br />
[[Category:Money transmitters]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Buying_bitcoins&diff=18104Buying bitcoins2011-10-15T18:55:12Z<p>Phantomcircuit: ordered by 30 day volume</p>
<hr />
<div>One issue currently facing a newcomer to bitcoin is, how do I get some? While there is the [[bitcoin faucet]] that can get you started with a small fraction of a coin, when getting larger amounts the user faces an abundance of choice. This page will cut through the clutter, and help direct you to the right exchanger for your needs.<br />
<br />
==Major Exchanges==<br />
<br />
The least expensive methods for buying bitcoins involve transferring funds using a bank wire, ACH, bank transfer (ACH, EUR / SEPA).<br />
<br />
{| class="wikitable"<br />
|-<br />
| Exchange || Type || Adding Funds || Withdrawing Funds || [[eWallet]] || Notes<br />
|-<br />
| [[MtGox]] || Market || BTC<br/>USD ([[Dwolla]])<br />USD (International bank wire)<br />USD (Wire to [[AurumXChange Company|AurumXChange]])<br />EUR (SEPA bank transfer) (currently disabled) <br />AUD (Bank wire)<br />GBP (Bank wire)<br />Liberty Reserve USD || BTC<br />USD ([[Dwolla]])<br />USD (Wire via [[AurumXChange Company|AurumXChange]])<br />USD (Check via [[Paxum]])<br />USD (ATM via [[Paxum]])<br />USD (wire via [[Paxum]])<br />EUR (SEPA bank transfer) (currently disabled)<br />AUD (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve USD (via AurumXChange) || {{Table Value Yes}} || Oldest running exchange. Higest daily volume. Restrictions and limits on withdrawals. Will block account after funds are deposited. See [http://www.mtgoxsucks.org www.mtgoxsucks.org]<br />
|-<br />
| [[TradeHill]] || Market || BTC<br/>USD (Domestic bank wire)<br>USD (International bank wire)<br/>USD (Check via [[Paxum]])<br />USD (wire via [[Paxum]])<br />EUR (SEPA bank transfer)<br />EUR (via [[Paxum]]<br />CAD (via [[Paxum]]<br />CLP (Bank transfer)<br />PEN (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || BTC<br/>USD (Domestic bank wire)<br/>USD (International bank wire)<br />USD (Direct deposit / ACH)<br />USD (Check via [[Paxum]])<br />USD (ATM via [[Paxum]])<br />USD (Prepaid card via [[Paxum]])<br />EUR (SEPA bank transfer)<br />EUR (via [[Paxum]]<br />CAD (via [[Paxum]])<br />CLP (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || {{Table Value Yes}} || <br />
|-<br />
| [[BTC-E]] || Market || BTC<br/>USD ([[Liberty Reserve]])<br />USD (Interkassa) || BTC<br/>USD (Webmoney) || {{Table Value Yes}} || Language: Russian. Interkassa can be funded from Webmoney and many other methods.<br />
|-<br />
| [[ExchB]] || Market || BTC<br/>USD (Cash or check)<br />USD (ING Person2Person)<br />USD (Bank wire)<br />USD (USPS Money Order by mail)<br />USD (Paxum) || BTC<br/>USD (Check)<br />USD (Bank wire)<br />USD (ACH)<br />USD (Paxum) || {{Table Value Yes}} || Cash or check deposits: Accepted at any Wells Fargo or Chase branch, or by mail.<br />
|-<br />
| [[VirWoX]] || Market || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br/>USD,EUR,GBP (Credit & Debit cards via [[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (DIRECTebanking / Sofortüberweisung)<br/>USD,EUR,GBP,CHF ([[paysafecard]])<br/>EUR (SEPA bank transfer) || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br />USD,EUR,GBP ([[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (SEPA bank transfer) || {{Table Value Yes}} || Trading through Second Life Linden Dollars.<br/>Variable limits on PayPal and Credit Card deposits. <br />
|-<br />
| [[Britcoin]]<br/>&amp;<br/>[[Intersango]] || Market || BTC<br />GBP (bank deposit)<br/>USD ([[Dwolla]])<br />USD (Domestic bank wire)<br />USD (ACH)<br />EUR (SEPA bank deposit)<br />PLN (Bank Wire) || BTC<br />GBP (bank transfer)<br/>USD ([[Dwolla]])<br />EUR (SEPA bank transfer)<br />PLN (Bank Wire) || {{Table Value Yes}} || Operated by the [https://bitcoinconsultancy.com/ BitcoinConsultancy] <br/> [https://intersango.com Intersango] is a completely custom trading platform built from the ground up with security, scalability and extensibility in mind. [https://bitcointalk.org/index.php?topic=43745.0 More Information]<br/><br/>Boasts an [https://bitcoinconsultancy.com/wiki/index.php/Intersango/API ever expanding API]<br />
|-<br />
| [[BitChange.pl]] || Market || BTC<br />PLN (Bank wire) || BTC<br />PLN (Bank wire) || {{Table Value Yes}} ||<br />
|-<br />
| [[VirtEx]] || Market || BTC<br/>CAD (online bill pay)<br />CAD (cash at TDBank) || BTC<br/>CAD (direct deposit) || {{Table Value Yes}} ||<br />
|-<br />
| [[Camp BX]] (CBX) || Market || BTC <br/>USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || BTC <br />USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || {{Table Value Yes}} || <ul> <li> Security certification from McAfee</li><li> Advanced trading options with AON/FOK/Market</li> <li>STOPLOSS and Short-Selling in Pipeline</li><li> Trading API available</li><li> Wallet API available </li><li> CBX Instant Bitcoin Transfers Feature </li><li> Stoploss / Custom Order Expiry Date/Time </li><li> SMS (Text Message) Notifications </li> <li> Two-Factor Authentication </li> <li> Based in USA - Atlanta </li> </ul> <br />
|-<br />
| [[Mercado Bitcoin]] || Market || BTC<br/>BRL (Bank transfer)<br />BRL (Bank transfer - MoIP)<br />Liberty Reserve USD || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[Bitcoin-Central]] || Market || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />CAD (Cash deposit)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />PGAU [[Pecunix]] Gold || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />[[Pecunix]] Gold || {{Table Value Yes}} || [https://github.com/davout/bitcoin-central Open-source], community reviewed platform<br />Available in French and English languages<br />
|-<br />
| [[HelloBitcoin]] || Market || BTC<br/>USD (Cwolla)<br />USD (Bank wire)<br />USD (Check) || BTC<br/>USD (Check)<br />USD (Bank wire)<br />USD (ACH) || {{Table Value Yes}} || Offers margin trading and shorting.<br />
|-<br />
| [[Brasil Bitcoin Market]] || Market || BTC<br/>BRL (Bank transfer - MoIP) || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[Australian Bitcoin Exchange]] || Market || BTC<br />AUD (Electronic funds deposit)<br />AUD (Mtgox Redeemable Voucher) || BTC<br />AUD (Electronic funds transfer) || {{Table Value Yes}} ||<br />
|-<br />
| [[FreshBTC]] || Market || BTC<br />PLN (Bank wire) || BTC<br />PLN (Bank wire) || {{Table Value Yes}} ||<br />
|-<br />
| [[BitStamp]] || Market || BTC<br />EUR (SEPA transfer) || BTC<br />EUR (SEPA transfer) || {{Table Value Yes}} || EUR deposits converted to/from USD for trading<br />
|-<br />
| [[Aqoin]] || Market || BTC<br />EUR (SEPA transfer)<br />EUR (Domestic bank wire/Spain)<br />EUR (International bank wire) || BTC<br />EUR (SEPA transfer)<br />EUR (Domestic bank wire/Spain)<br />PayPal || {{Table Value Yes}} || Languages: English, Spanish<br />
|-<br />
| [[Rock Currency Exchange]] || Market || BTC<br/>SLL (Second Life) || BTC<br/>SLL (Second Life) || {{Table Value Yes}} || <br />
|-<br />
| [[WM-Center]] || Exchanger || BTC<br/>USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP || BTC<br />USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP<br /> PayPal USD/EUR, Moneybookers, Neteller || {{Table Value No}} || 24/7/365 support in english, spanish and russian!<br />
|-<br />
| [[bitNZ]] || Market || BTC<br/>NZD (Domestic bank transfer) || BTC<br/>NZD (Domestic bank transfer) || {{Table Value Yes}} || <br />
|}<br />
<br />
==Fixed Rate Exchanges & Others==<br />
<br />
For smaller amounts, the options are limited due to bank transfer fees, conversion fees and transaction size restrictions. Options include:<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment Method || Notes<br />
|-<br />
| [[Bitcoin Market]] || Market || USD (Liberty Reserve)<br />USD (MoneyBookers)<br />GAU (Pecunix) || Varies (person to person)<br />
|-<br />
| [[BitMarket.eu]] || Market || EUR (Euro)<br />GBP (British Sterling Pound)<br />USD (U.S. Dollar)<br>PLN (Polish złoty)<br />AUD (Australian Dollar)<br />CAD (Canadian Dollar)<br />ZAR (South African Rand)<br />ILS (Israeli Shekel)<br />CHF (Swiss Franc)<br>RUB (Russian Ruble) || Varies (person to person)<br />
|-<br />
| [[Bitcoiny.cz]] || Market || CZK || Varies (person to person)<br />
|-<br />
| [[Bit]] / BTC China || Market || n/a || n/a<br />
|-<br />
| [[Bitfunnel]] || Credit Card payment exchange/brokering services || Varies (person to person)<br />
|-<br />
| [[bitcoin-otc|#bitcoin-otc]] || [http://bitcoin-otc.com/vieworderbook.php Order Book] || Varies (person to person) || IRC trading marketplace will usually have people willing to deal for small and larger amounts using various payment methods, including [[PayPal]], [[Dwolla]], [[Linden Dollars]], etc.<br />
|-<br />
| [[Lilion Transfer]] || Fixed Rate || USD (Liberty Reserve)<br />[[Pecunix]] || <br />
|-<br />
| [[Nanaimo Gold]] || Fixed Rate || USD (Liberty Reserve)<br />Western Union money transfer<br />Moneygram money transfer<br />Cash in the mail || LR <--> Bitcoin exchange is automated<br />For cash in the mail send USD, EUR, CAD, or GBP. Canada mailing address.<br />
|-<br />
| [[Bitcoin Morpheus]] || Fixed Rate || Cash, check or money order through the mail || U.S. mailing address for cash transactions.<br />
|-<br />
| [[Bitcoin Argentina]] || Fixed Rate || Cash: ARS, BRL, USD <br /> Bank transfer: ARS || No exchange fees!<br />
|-<br />
| [[Bitcoin.com.es]] || Fixed Rate || EUR (bank deposit) || Bank transfer or cash deposits at OpenBank in Spain.<br />
|-<br />
| [[Bahtcoin]] || Fixed Rate || Cash, Webmoney<br />Liberty Reserve USD || Will cash out to Thai mobile and gaming prepaid cards as well.<br />
|-<br />
| [[Bitcoin Brasil]] || Fixed Rate || BRL (Brazilian Real)<br />USD || Cash exchange<br />
|-<br />
| [[BitPiggy]] || Fixed Rate || AUD (Australian Dollar)|| Payment via bank transfer.<br />
|-<br />
| [[GetBitcoin]] || Fixed Rate || USD (Dwolla)<BR />USD (Bank wire)<BR />USD (Cash in the mail)<BR />USD (Money Order)<BR />USD (Cashier's Check/Certified Check)<BR />USD (Western Union)<BR />USD (Traveler's Check)<BR />USD (Prepaid Debit Card)<BR /> || For cash in mail, send USD. U.S. mailing address.<br />
|-<br />
| [[Bitcoin 4 Cash]] || Fixed Rate || Cash in the mail || Send USD or CAD. Canada mailing address.<br />
|-<br />
| [[Bitcoin2Cash]] || Fixed Rate || Cash in the mail || Send USD. U.S. mailing address.<br />
|-<br />
| [[bitcoin.local]] || Directory || Varies (person to person) ||<br />
|-<br />
| [[bcchanger.com]] || Directory || Enables person to person purchases and sales via PayPal, MoneyBookers and other e-currency platforms ||<br />
|-<br />
| [[YouTipIt]] || Fixed Rate || USD<br />EUR<br />GBP || Purchase bitcoins to add to your balance with YouTipIt using credit card through ClickAndBuy.<br />
|-<br />
| [[Ubitex]] || In person exchange || Varies (person to person) ||<br />
|-<br />
| [[Bitcoil]] || Fixed Rate || ILS (bank transfer) ||<br />
|- <br />
|[[Accesscoin]] || Fixed Rate || USD (Google Checkout) || Requires Facebook account for second factor authentication ||<br />
|-<br />
|[[btcnow]] || Fixed Rate || USD (Google Checkout) ||<br />
|}<br />
<br />
==Other Financial Services==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment || Settled || Notes<br />
|-<br />
| [http://polimedia.us/bitcoin/options.php Derivatives] || Buy / Sell / Exercise CALLs / PUTs, American style.<br />52 strikes offered (by .5), current month + 2.<br /> No shorting available yet.|| BTC || BTC || Transactions encoded via amt.<br /> Must use non-rounding client<br />(0.3.24 or later)<br />
|}<br />
<br />
==See Also==<br />
<br />
* [[:Category:Digital_currencies|Digital Currencies]]<br />
* [[Selling bitcoins]]<br />
* [[Secure Trading]]<br />
* [[:Category:Local|Local]] exchanges<br />
<br />
[[Category:Exchanges]]<br />
[[Category:Introduction]]<br />
[[zh-cn:购买bitcoins]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Intersango&diff=17894Intersango2011-10-09T17:48:32Z<p>Phantomcircuit: </p>
<hr />
<div>A [[currency exchange|exchange]] offering multiple trading markets for trading bitcoins against multiple currencies.<br />
<br />
Traders add funds and then place orders to buy and sell. Intersango acts as an escrow. The site charges no trading fees.<br />
<br />
[[Bitcoin Consultancy]] operates the exchange.<br />
<br />
Intersango has a trading [https://bitcoinconsultancy.com/wiki/index.php/Intersango/API API]<br />
<br />
==Trading==<br />
===Buying===<br />
<br />
A buy order is executed partially or in full when the price bid can be matched against a sell order that is at or below the bid amount.<br />
<br />
===Selling===<br />
<br />
A sell order is executed partially or in full when the price asked can be matched against a buy order that is at or above the ask amount.<br />
<br />
<br />
No Fee (for a limited time).<br />
<br />
==Adding Funds==<br />
===BTC===<br />
<br />
There are no fees incurred when when transferring bitcoins for deposit. Funds are available once [[confirmation|confirmed]] (4 confirms), a process that can take roughly forty minutes.<br />
<br />
===EUR===<br />
The exchange accepts SEPA bank transfers for deposit. A 5 PLN fee is taken by the bank. No additional fees is taken.<br />
<br />
===PLN===<br />
The exchange accepts polish bank transfers for deposit. There are no fees.<br />
<br />
===USD===<br />
The exchange accepts [[Dwolla]] transfers (no fee), bank wire transfers and ACH. There are no fees.<br />
<br />
===GBP===<br />
The exchange accepts standard UK GBP bank transfers.<br />
<br />
==Withdrawing Funds==<br />
<br />
===BTC===<br />
Bitcoins may be withdrawn at no charge.<br />
<br />
===EUR===<br />
Withdrawals as SEPA transfers. A fee of 5 PLN is taken by the bank. No additional fee is charged.<br />
<br />
===PLN===<br />
Withdrawals as standard polish PLN bank transfers.<br />
<br />
===USD===<br />
Withdrawals are through [[Dwolla]]. There is no fee incurred from the exchange for withdrawing funds.<br />
<br />
===GBP===<br />
Withdrawals as standard UK GBP bank transfers.<br />
<br />
==API==<br />
<br />
See the [https://bitcoinconsultancy.com/wiki/index.php/Intersango/API API page] for more info.<br />
<br />
<source lang="python"><br />
import httplib<br />
import urllib<br />
import json<br />
<br />
class Intersango:<br />
ORDER_QUEUED = 'queued'<br />
ORDER_OPEN = 'open'<br />
ORDER_EXPIRED = 'expired'<br />
ORDER_CANCELLED = 'cancelled'<br />
ORDER_FULFILLED = 'fulfilled'<br />
<br />
BUY = 'false'<br />
SELL = 'true'<br />
<br />
def __init__(self, api_key):<br />
self.connection = httplib.HTTPSConnection('intersango.com')<br />
self.api_key = api_key<br />
<br />
def make_request(self, page, params={}):<br />
headers = {"Content-type": "application/x-www-form-urlencoded",<br />
"Accept": "text/plain"}<br />
params['api_key'] = self.api_key<br />
params = urllib.urlencode(params)<br />
base_url = '/api/authenticated/v0.1/%s.php'%page<br />
self.connection.request('POST', base_url, params, headers)<br />
response = self.connection.getresponse()<br />
if response.status == 404:<br />
return None<br />
return json.loads(response.read())<br />
<br />
def accounts(self):<br />
return self.make_request('listAccounts')<br />
<br />
def orders(self, account_id, states):<br />
params = {'account_id': account_id, 'states': states}<br />
return self.make_request('listOrders', params)<br />
<br />
def deposits(self, account_id):<br />
return self.make_request('listDeposits', {'account_id': account_id})<br />
<br />
def withdrawals(self, account_id):<br />
return self.make_request('listWithdrawalRequests',<br />
{'account_id': account_id})<br />
<br />
def place_limit_order(self, quantity, rate, is_selling, base_id, quote_id):<br />
params = {'quantity': quantity, 'rate': rate, 'selling': is_selling,<br />
'base_account_id': base_id, 'quote_account_id': quote_id}<br />
return self.make_request('placeLimitOrder', params)<br />
<br />
def cancel_order(self, account_id, order_id):<br />
params = {'account_id': account_id, 'order_id': order_id}<br />
return self.make_request('requestCancelOrder', params)<br />
<br />
def cancel_withdrawal(self, account_id, withdrawal_request_id):<br />
params = {'account_id': account_id, <br />
'withdrawal_request_id': withdrawal_request_id}<br />
return self.make_request('cancelWithdrawalRequest', params)<br />
</source><br />
<br />
Example usage:<br />
<br />
<source lang="python"><br />
intersango = Intersango('3223kdkk323h32kj3hkj23233j')<br />
print 'Accounts: ', intersango.accounts()<br />
print 'Orders: ', \<br />
intersango.orders(411289412410, <br />
[Intersango.ORDER_CANCELLED, Intersango.ORDER_FULFILLED])<br />
print 'Deposits: ', intersango.deposits(861502532543)<br />
print 'Withdrawals: ', intersango.withdrawals(702703681384)<br />
intersango.place_limit_order('1', '2.0', Intersango.BUY, <br />
861502521543, 411982412410)<br />
intersango.cancel_order(412989412410, 21724)<br />
</source><br />
<br />
==History==<br />
<br />
The service was launched on July 6, 2011<ref>[http://forum.bitcoin.org/index.php?topic=26543.0 Intersango.com EUR exchange is now live]</ref>. The Intersango [[:Category:Open Source|open source]] software that the exchange runs on was announced on March 17, 2011<ref>[http://www.bitcoin.org/smf/index.php?topic=4579.0 Free Bitcoin exchange software- Intersango]</ref>. In September, 2011 the exchange begain using a new version of the Intersango open source exchange project with two currency markets (BTC/EUR, BTC/USD) live under the Intersango brand and plans made for the third (BTC/GBP) when [[Britcoin]] accounts are migrated at a future date.<br />
<br />
==See Also==<br />
<br />
* [[Buying bitcoins]]<br />
* [[Selling bitcoins]]<br />
<br />
==External Links==<br />
<br />
* [https://intersango.com Intersango] EUR exchange website<br />
* [http://gitorious.org/intersango Intersango] exchange project on Gitorious<br />
<br />
==References==<br />
<references/><br />
<br />
[[Category:Exchanges]]<br />
[[Category:eWallets]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Intersango&diff=17182Intersango2011-09-23T10:38:41Z<p>Phantomcircuit: /* GBP */</p>
<hr />
<div>A [[currency exchange|exchange]] offering multiple trading markets for trading bitcoins against multiple currencies.<br />
<br />
Traders add funds and then place orders to buy and sell. Intersango acts as an escrow. The site charges no trading fees.<br />
<br />
[[Bitcoin Consultancy]] operates the exchange.<br />
<br />
Intersango has a trading API [[Intersango/API]]<br />
<br />
==Trading==<br />
===Buying===<br />
<br />
A buy order is executed partially or in full when the price bid can be matched against a sell order that is at or below the bid amount.<br />
<br />
===Selling===<br />
<br />
A sell order is executed partially or in full when the price asked can be matched against a buy order that is at or above the ask amount.<br />
<br />
<br />
No Fee (for a limited time).<br />
<br />
==Adding Funds==<br />
===BTC===<br />
<br />
There are no fees incurred when when transferring bitcoins for deposit. Funds are available once [[confirmation|confirmed]] (4 confirms), a process that can take roughly forty minutes.<br />
<br />
===EUR===<br />
The exchange accepts SEPA bank transfers for deposit. A 5 PLN fee is taken by the bank. No additional fees is taken.<br />
<br />
===USD===<br />
The exchange accepts [[Dwolla]] transfers (no fee), bank wire transfers and ACH. There are no fees.<br />
<br />
===GBP===<br />
The exchange accepts standard UK GBP bank transfers.<br />
<br />
==Withdrawing Funds==<br />
<br />
===BTC===<br />
Bitcoins may be withdrawn at no charge.<br />
<br />
===EUR===<br />
Withdrawals as SEPA transfers. A fee of 5 PLN is taken by the bank. No additional fee is charged.<br />
<br />
===USD===<br />
Withdrawals are through [[Dwolla]]. There is no fee incurred from the exchange for withdrawing funds.<br />
<br />
===GBP===<br />
Withdrawals as standard UK GBP bank transfers.<br />
<br />
==History==<br />
<br />
The service was launched on July 6, 2011<ref>[http://forum.bitcoin.org/index.php?topic=26543.0 Intersango.com EUR exchange is now live]</ref>. The Intersango [[:Category:Open Source|open source]] software that the exchange runs on was announced on March 17, 2011<ref>[http://www.bitcoin.org/smf/index.php?topic=4579.0 Free Bitcoin exchange software- Intersango]</ref>. In September, 2011 the exchange begain using a new version of the Intersango open source exchange project with two currency markets (BTC/EUR, BTC/USD) live under the Intersango brand and plans made for the third (BTC/GBP) when [[Britcoin]] accounts are migrated at a future date.<br />
<br />
==See Also==<br />
<br />
* [[Buying bitcoins]]<br />
* [[Selling bitcoins]]<br />
<br />
==External Links==<br />
<br />
* [https://intersango.com Intersango] EUR exchange website<br />
* [http://gitorious.org/intersango Intersango] exchange project on Gitorious<br />
<br />
==References==<br />
<references/><br />
<br />
[[Category:Exchanges]]<br />
[[Category:eWallets]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Intersango&diff=17181Intersango2011-09-23T10:37:31Z<p>Phantomcircuit: </p>
<hr />
<div>A [[currency exchange|exchange]] offering multiple trading markets for trading bitcoins against multiple currencies.<br />
<br />
Traders add funds and then place orders to buy and sell. Intersango acts as an escrow. The site charges no trading fees.<br />
<br />
[[Bitcoin Consultancy]] operates the exchange.<br />
<br />
Intersango has a trading API [[Intersango/API]]<br />
<br />
==Trading==<br />
===Buying===<br />
<br />
A buy order is executed partially or in full when the price bid can be matched against a sell order that is at or below the bid amount.<br />
<br />
===Selling===<br />
<br />
A sell order is executed partially or in full when the price asked can be matched against a buy order that is at or above the ask amount.<br />
<br />
<br />
No Fee (for a limited time).<br />
<br />
==Adding Funds==<br />
===BTC===<br />
<br />
There are no fees incurred when when transferring bitcoins for deposit. Funds are available once [[confirmation|confirmed]] (4 confirms), a process that can take roughly forty minutes.<br />
<br />
===EUR===<br />
The exchange accepts SEPA bank transfers for deposit. A 5 PLN fee is taken by the bank. No additional fees is taken.<br />
<br />
===USD===<br />
The exchange accepts [[Dwolla]] transfers (no fee), bank wire transfers and ACH. There are no fees.<br />
<br />
===GBP===<br />
The exchange accepts standard UK GBP bank transfers.<br />
<br />
==Withdrawing Funds==<br />
<br />
===BTC===<br />
Bitcoins may be withdrawn at no charge.<br />
<br />
===EUR===<br />
Withdrawals as SEPA transfers. A fee of 5 PLN is taken by the bank. No additional fee is charged.<br />
<br />
===USD===<br />
Withdrawals are through [[Dwolla]]. There is no fee incurred from the exchange for withdrawing funds.<br />
<br />
===GBP===<br />
The exchange's GBP trading is still handled through their [[Britcoin]] brand though that market eventually will trade on Intersango,<br />
<br />
==History==<br />
<br />
The service was launched on July 6, 2011<ref>[http://forum.bitcoin.org/index.php?topic=26543.0 Intersango.com EUR exchange is now live]</ref>. The Intersango [[:Category:Open Source|open source]] software that the exchange runs on was announced on March 17, 2011<ref>[http://www.bitcoin.org/smf/index.php?topic=4579.0 Free Bitcoin exchange software- Intersango]</ref>. In September, 2011 the exchange begain using a new version of the Intersango open source exchange project with two currency markets (BTC/EUR, BTC/USD) live under the Intersango brand and plans made for the third (BTC/GBP) when [[Britcoin]] accounts are migrated at a future date.<br />
<br />
==See Also==<br />
<br />
* [[Buying bitcoins]]<br />
* [[Selling bitcoins]]<br />
<br />
==External Links==<br />
<br />
* [https://intersango.com Intersango] EUR exchange website<br />
* [http://gitorious.org/intersango Intersango] exchange project on Gitorious<br />
<br />
==References==<br />
<references/><br />
<br />
[[Category:Exchanges]]<br />
[[Category:eWallets]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Intersango/API&diff=17180Intersango/API2011-09-23T10:34:44Z<p>Phantomcircuit: </p>
<hr />
<div>=== common information ===<br />
<br />
To maintain backwards compatibility the following britcoin.co.uk urls are rewritten<br />
<br />
{| class="wikitable"<br />
|-<br />
|----<br />
|/api/ticker.php<br />
|/api/ticker.php?currency_pair_id=1<br />
|----<br />
|/api/ticker<br />
|/api/ticker.php?currency_pair_id=1<br />
|----<br />
|/api/getTrades.php<br />
|/api/trades.php?currency_pair_id=1<br />
|----<br />
|/api/getTrades<br />
|/api/trades.php?currency_pair_id=1<br />
|----<br />
|/api/getDepth.php<br />
|/api/depth.php?currency_pair_id=1<br />
|----<br />
|/api/getDepth<br />
|/api/depth.php?currency_pair_id=1<br />
|}<br />
<br />
<br />
On error a json dictionary will be returned with 'error' set to the error.<br />
<br />
Example {'error':'missing api key'}<br />
<br />
=== Data API ===<br />
<br />
currency_pair_id is an optional GET parameter to all data api calls<br />
* 1 = BTC:GBP<br />
* 2 = BTC:EUR<br />
* 3 = BTC:USD<br />
* 4 = BTC:PLN<br />
<br />
{| class="wikitable"<br />
|-<br />
! URL !! Description !! Parameters !! Return Values<br />
|----<br />
| https://intersango.com/api/ticker.php<br />
| <br />
|<br />
|<br />
|----<br />
| https://intersango.com/api/trades.php<br />
| <br />
| <br />
Filters<br />
* currency_pair_id<br />
* last_trade_id<br />
* last_trade_time<br />
| if currency_pair_id not specified the return value is a dict indexed by the currency pair ids<br/><br />
if currency_pair_id is specified than an array is returned<br />
|----<br />
| https://intersango.com/api/depth.php<br />
| <br />
| <br />
| <br />
|}<br />
<br />
=== Authenticated API ===<br />
<br />
== Version 0.1 ==<br />
<br />
All API calls are POST and must include the api key as api_key<br />
<br />
All return values are json encoded. All decimal values are sent as strings.<br />
<br />
The base url for all calls is<br />
https://intersango.com/api/authenticated/v0.1/<br />
<br />
{| class="wikitable"<br />
|-<br />
! Relative URL !! Description !! Parameters !! Return Values<br />
|----<br />
|listAccounts.php<br />
|Accounts.<br />
|No parameters.<br />
|array of accounts<br />
*id<br />
*balance<br />
*outstanding_total<br />
*currency_abbreviation<br />
*currency_id<br />
*reference_code<br />
|----<br />
|listOrders.php<br />
|List orders for an account.<br />
|account_id<br />
|array of orders<br />
*id<br />
*selling<br />
*rate<br />
*quantity<br />
*outstanding<br />
*base_account_id<br />
*quote_account_id<br />
*currency_pair_id<br />
*fulfilled<br />
*placed<br />
*processed<br />
*expire<br />
*cancelled<br />
*partial<br />
*immediate<br />
|----<br />
|listDeposits.php<br />
|Deposits for an account<br />
|account_id<br />
|array of deposits<br />
*account_id<br />
*amount<br />
*deposit_id<br />
|----<br />
|listWithdrawalRequests.php<br />
|Withdraws for an account.<br />
|account_id<br />
|array of withdrawal request<br />
|----<br />
|placeLimitOrder.php<br />
|Place limit order.<br />
|<br />
* quantity<br />
* rate<br />
* selling "true" or "false"<br />
* base_account_id<br />
* quote_account_id<br />
| order_id<br />
|----<br />
|requestCancelOrder.php<br />
|Request that an order be cancelled.<br />
Orders are not guaranteed to have been cancelled<br><br />
until the cancelled property of the order is the time it was cancelled.<br />
|account_id order_id<br />
|dict with 'result' set to 'success'<br />
|----<br />
|cancelWithdrawalRequest.php<br />
|Cancel request to withdrawal funds<br />
|account_id withdrawal_request_id<br />
|dict with 'result' set to 'success'<br />
|}<br />
<br />
===Withdrawing and Depositing===<br />
Withdrawing and depositing BTC is not possible using the official API, but it is possible by impersonating a web-browser. See [[Ad-hoc transfers]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Intersango&diff=16627Intersango2011-09-15T00:56:10Z<p>Phantomcircuit: </p>
<hr />
<div>A [[currency exchange|exchange]] offering multiple trading markets for trading bitcoins against multiple currencies.<br />
<br />
Traders add funds and then place orders to buy and sell. Intersango acts as an escrow. The site charges no trading fees.<br />
<br />
[[Bitcoin Consultancy]] operates the exchange.<br />
<br />
Intersango has a trading API [[Intersango/API]]<br />
<br />
==Trading==<br />
===Buying===<br />
<br />
A buy order is executed partially or in full when the price bid can be matched against a sell order that is at or below the bid amount.<br />
<br />
===Selling===<br />
<br />
A sell order is executed partially or in full when the price asked can be matched against a buy order that is at or above the ask amount.<br />
<br />
<br />
No Fee (for a limited time).<br />
<br />
==Adding Funds==<br />
===BTC===<br />
<br />
There are no fees incurred when when transferring bitcoins for deposit. Funds are available once [[confirmation|confirmed]] (4 confirms), a process that can take roughly forty minutes.<br />
<br />
===EUR===<br />
The exchange accepts SEPA bank transfers for deposit. A 5 PLN fee is taken by the bank. No additional fees is taken.<br />
<br />
===USD===<br />
The exchange accepts [[Dwolla]] transfers (no fee), bank wire transfers and ACH. There are no fees.<br />
<br />
===GBP===<br />
The exchange's GBP trading is still handled through their [[Britcoin]] brand though that market eventually will trade on Intersango,<br />
<br />
==Withdrawing Funds==<br />
<br />
===BTC===<br />
Bitcoins may be withdrawn at no charge.<br />
<br />
===EUR===<br />
Withdrawals as SEPA transfers. A fee of 5 PLN is taken by the bank. No additional fee is charged.<br />
<br />
===USD===<br />
Withdrawals are through [[Dwolla]]. There is no fee incurred from the exchange for withdrawing funds.<br />
<br />
===GBP===<br />
The exchange's GBP trading is still handled through their [[Britcoin]] brand though that market eventually will trade on Intersango,<br />
<br />
==History==<br />
<br />
The service was launched on July 6, 2011<ref>[http://forum.bitcoin.org/index.php?topic=26543.0 Intersango.com EUR exchange is now live]</ref>. The Intersango [[:Category:Open Source|open source]] software that the exchange runs on was announced on March 17, 2011<ref>[http://www.bitcoin.org/smf/index.php?topic=4579.0 Free Bitcoin exchange software- Intersango]</ref>. In September, 2011 the exchange begain using a new version of the Intersango open source exchange project with two currency markets (BTC/EUR, BTC/USD) live under the Intersango brand and plans made for the third (BTC/GBP) when [[Britcoin]] accounts are migrated at a future date.<br />
<br />
==See Also==<br />
<br />
* [[Buying bitcoins]]<br />
* [[Selling bitcoins]]<br />
<br />
==External Links==<br />
<br />
* [https://intersango.com Intersango] EUR exchange website<br />
* [http://gitorious.org/intersango Intersango] exchange project on Gitorious<br />
<br />
==References==<br />
<references/><br />
<br />
[[Category:Exchanges]]<br />
[[Category:eWallets]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Intersango/API&diff=16626Intersango/API2011-09-15T00:55:06Z<p>Phantomcircuit: </p>
<hr />
<div>=== Data API ===<br />
<br />
currency_pair_id is an optional GET parameter to all data api calls<br />
* 1 = BTC:GBP<br />
* 2 = BTC:EUR<br />
* 3 = BTC:USD<br />
* 4 = BTC:PLN<br />
<br />
* https://intersango.com/api/ticker.php<br />
* https://intersango.com/api/trades.php<br />
* https://intersango.com/api/depth.php<br />
<br />
=== Authenticated API ===<br />
<br />
== Version 0.1 ==<br />
<br />
All API calls are POST and must include the api key as api_key<br />
<br />
https://intersango.com/api/authenticated/v0.1/<br />
<br />
All return values are json encoded. All decimal values are sent as strings.<br />
<br />
On error a json dictionary will be returned with 'error' set to the error.<br />
<br />
Example {'error':'missing api key'}<br />
<br />
{| class="wikitable"<br />
|-<br />
! Relative URL !! Description !! Parameters !! Return Values<br />
|----<br />
|listAccounts.php<br />
|Accounts.<br />
|No parameters.<br />
|array of accounts<br />
*id<br />
*balance<br />
*outstanding_total<br />
*currency_abbreviation<br />
*currency_id<br />
*reference_code<br />
|----<br />
|listOrders.php<br />
|List orders for an account.<br />
|account_id<br />
|array of orders<br />
*id<br />
*selling<br />
*rate<br />
*quantity<br />
*outstanding<br />
*base_account_id<br />
*quote_account_id<br />
*currency_pair_id<br />
*fulfilled<br />
*placed<br />
*processed<br />
*expire<br />
*cancelled<br />
*partial<br />
*immediate<br />
|----<br />
|listDeposits.php<br />
|Deposits for an account<br />
|account_id<br />
|array of deposits<br />
*account_id<br />
*amount<br />
*deposit_id<br />
|----<br />
|listWithdrawalRequests.php<br />
|Withdraws for an account.<br />
|account_id<br />
|array of withdrawal request<br />
|----<br />
|placeLimitOrder.php<br />
|Place limit order.<br />
|<br />
* quantity<br />
* rate<br />
* selling "true" or "false"<br />
* base_account_id<br />
* quote_account_id<br />
| order_id<br />
|----<br />
|requestCancelOrder.php<br />
|Request that an order be cancelled.<br />
Orders are not guaranteed to have been cancelled<br><br />
until the cancelled property of the order is the time it was cancelled.<br />
|account_id order_id<br />
|dict with 'result' set to 'success'</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Buying_bitcoins&diff=16619Buying bitcoins2011-09-15T00:23:06Z<p>Phantomcircuit: </p>
<hr />
<div>One issue currently facing a newcomer to bitcoin is, how do I get some? While there is the [[bitcoin faucet]] that can get you started with a small fraction of a coin, when getting larger amounts the user faces an abundance of choice. This page will cut through the clutter, and help direct you to the right exchanger for your needs.<br />
<br />
==Major Exchanges==<br />
<br />
The least expensive methods for buying bitcoins involve transferring funds using a bank wire, ACH, bank transfer (ACH, EUR / SEPA).<br />
<br />
{| class="wikitable"<br />
|-<br />
| Exchange || Type || Adding Funds || Withdrawing Funds || [[eWallet]] || Notes<br />
|-<br />
| [[MtGox]] || Market || BTC<br/>USD ([[Dwolla]])<br />USD (International bank wire)<br />USD (Wire to [[AurumXChange Company|AurumXChange]])<br />EUR (SEPA bank transfer) (currently disabled) <br />AUD (Bank wire)<br />GBP (Bank wire)<br />Liberty Reserve USD || BTC<br />USD ([[Dwolla]])<br />USD (Wire via [[AurumXChange Company|AurumXChange]])<br />USD (Check via [[Paxum]])<br />USD (ATM via [[Paxum]])<br />USD (wire via [[Paxum]])<br />EUR (SEPA bank transfer) (currently disabled)<br />AUD (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve USD (via AurumXChange) || {{Table Value Yes}} || Restrictions and limits on withdrawals.<br />
|-<br />
| [[TradeHill]] || Market || BTC<br/>USD (Domestic bank wire)<br>USD (International bank wire)<br/>USD (Check via [[Paxum]])<br />USD (wire via [[Paxum]])<br />EUR (SEPA bank transfer)<br />EUR (via [[Paxum]]<br />CAD (via [[Paxum]]<br />CLP (Bank transfer)<br />PEN (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || BTC<br/>USD (Domestic bank wire)<br/>USD (International bank wire)<br />USD (Direct deposit / ACH)<br />USD (Check via [[Paxum]])<br />USD (ATM via [[Paxum]])<br />USD (Prepaid card via [[Paxum]])<br />EUR (SEPA bank transfer)<br />EUR (via [[Paxum]]<br />CAD (via [[Paxum]])<br />CLP (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || {{Table Value Yes}} || <br />
|-<br />
| [[Britcoin]]<br/>&amp;<br/>[[Intersango]] || Market || BTC<br />GBP (bank deposit)<br/>USD ([[Dwolla]])<br />USD (Domestic bank wire)<br />USD (ACH)<br />EUR (SEPA bank deposit)<br />PLN (Bank Wire) || BTC<br />GBP (bank transfer)<br/>USD ([[Dwolla]])<br />EUR (SEPA bank transfer)<br />PLN (Bank Wire) || {{Table Value Yes}} || Operated by the [https://bitcoinconsultancy.com/ BitcoinConsultancy] <br/> [https://intersango.com Intersango] is a completely custom trading platform built from the ground up with security, scalability and extensibility in mind. [https://bitcointalk.org/index.php?topic=43745.0 More Information]<br/><br/>Boasts an [https://bitcoinconsultancy.com/wiki/index.php/Intersango/API ever expanding API]<br />
|-<br />
| [[VirWoX]] || Market || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br/>USD,EUR,GBP (Credit & Debit cards via [[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (DIRECTebanking / Sofortüberweisung)<br/>USD,EUR,GBP,CHF ([[paysafecard]])<br/>EUR (SEPA bank transfer) || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br />USD,EUR,GBP ([[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (SEPA bank transfer) || {{Table Value Yes}} || Trading through Second Life Linden Dollars (highly liquid).<br/>Variable limits on PayPal and Credit Card deposits. <br />
|-<br />
| [[VirtEx]] || Market || BTC<br/>CAD (online bill pay)<br />CAD (cash at TDBank) || BTC<br/>CAD (direct deposit) || {{Table Value Yes}} ||<br />
|-<br />
| [[ExchB]] || Market || BTC<br/>USD (Cash or check)<br />USD (ING Person2Person)<br />USD (Bank wire)<br />USD (USPS Money Order by mail)<br />USD (Paxum) || BTC<br/>USD (Check)<br />USD (Bank wire)<br />USD (ACH)<br />USD (Paxum) || {{Table Value Yes}} || Cash or check deposits: Accepted at any Wells Fargo or Chase branch, or by mail.<br />
|-<br />
| [[Bitcoin-Central]] || Market || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />CAD (Cash deposit)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />PGAU [[Pecunix]] Gold || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />[[Pecunix]] Gold || {{Table Value Yes}} || [https://github.com/davout/bitcoin-central Open-source], community reviewed platform<br />Available in French and English languages<br />
|-<br />
| [[HelloBitcoin]] || Market || BTC<br/>USD (Cwolla)<br />USD (Bank wire)<br />USD (Check) || BTC<br/>USD (Check)<br />USD (Bank wire)<br />USD (ACH) || {{Table Value Yes}} || Offers margin trading and shorting.<br />
|-<br />
| [[Bitcoin7]] || Market || BTC<br />EUR (SEPA Bank transfer)<br />USD (Domestic wire)<br />USD (International wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />BGN (Bank transfer) || BTC<br/>EUR (SEPA Bank transfer)<br />USD (Dwolla)<br />USD (Bank transfer)<br />Liberty Reserve USD<br />PLN (Bank transfer)<br />SAR (Bank transfer)<br />BGN (ePay)<br />BGN (Bank transfer) || {{Table Value Yes}} || USD wire to Citibank. EUR transfers to/from FiBank.<br />
|-<br />
| [[Mercado Bitcoin]] || Market || BTC<br/>BRL (Bank transfer)<br />BRL (Bank transfer - MoIP)<br />Liberty Reserve USD || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[BTC-E]] || Market || BTC<br/>USD ([[Liberty Reserve]])<br />USD (Interkassa) || BTC<br/>USD (Webmoney) || {{Table Value Yes}} || Language: Russian. Interkassa can be funded from Webmoney and many other methods.<br />
|-<br />
| [[Australian Bitcoin Exchange]] || Market || BTC<br />AUD (Electronic funds deposit)<br />AUD (Mtgox Redeemable Voucher) || BTC<br />AUD (Electronic funds transfer) || {{Table Value Yes}} || Restrictions and limits on withdrawals.<br /> Two-Factor Authentication<br /> Based in Queensland, Australia.<br /> Intersango Software.<br />
|-<br />
| [[BitChange.pl]] || Market || BTC<br />PLN (Bank wire) || BTC<br />PLN (Bank wire) || {{Table Value Yes}} ||<br />
|-<br />
| [[FreshBTC]] || Market || BTC<br />PLN (Bank wire) || BTC<br />PLN (Bank wire) || {{Table Value Yes}} ||<br />
|-<br />
| [[BitStamp]] || Market || BTC<br />EUR (SEPA transfer) || BTC<br />EUR (SEPA transfer) || {{Table Value Yes}} ||<br />
|-<br />
| [[Camp BX]] (CBX) || Market || BTC <br />USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || BTC <br />USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || {{Table Value Yes}} || <ul> <li> Security certification from McAfee</li><li> Advanced trading options with AON/FOK/Market</li> <li>STOPLOSS and Short-Selling in Pipeline</li><li> Trading API available</li><li> Wallet API available </li><li> CBX Instant Bitcoin Transfers Feature </li><li> Stoploss / Custom Order Expiry Date/Time </li><li> SMS (Text Message) Notifications </li> <li> Two-Factor Authentication </li> <li> Based in USA - Atlanta </li> </ul> <br />
|-<br />
| [[WM-Center]] || Exchanger || BTC<br/>USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP || BTC<br />USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP<br /> PayPal USD/EUR, Moneybookers, Neteller || {{Table Value No}} || 24/7/365 support in english, spanish and russian!<br />
|}<br />
<br />
==Fixed Rate Exchanges & Others==<br />
<br />
For smaller amounts, the options are limited due to bank transfer fees, conversion fees and transaction size restrictions. Options include:<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment Method || Notes<br />
|-<br />
| [[Bitcoin Market]] || Market || USD (Liberty Reserve)<br />USD (MoneyBookers)<br />GAU (Pecunix) || Varies (person to person)<br />
|-<br />
| [[BitMarket.eu]] || Market || EUR (Euro)<br />GBP (British Sterling Pound)<br />USD (U.S. Dollar)<br>PLN (Polish złoty)<br />AUD (Australian Dollar)<br />CAD (Canadian Dollar)<br />ZAR (South African Rand)<br />ILS (Israeli Shekel)<br />CHF (Swiss Franc)<br>RUB (Russian Ruble) || Varies (person to person)<br />
|-<br />
| [[Bitcoiny.cz]] || Market || CZK || Varies (person to person)<br />
|-<br />
| [[Bit]] / BTC China || Market || n/a || n/a<br />
|-<br />
| [[Bitfunnel]] || Credit Card payment exchange/brokering services || Varies (person to person)<br />
|-<br />
| [[bitcoin-otc|#bitcoin-otc]] || [http://bitcoin-otc.com/vieworderbook.php Order Book] || Varies (person to person) || IRC trading marketplace will usually have people willing to deal for small and larger amounts using various payment methods, including [[PayPal]], [[Dwolla]], [[Linden Dollars]], etc.<br />
|-<br />
| [[Lilion Transfer]] || Fixed Rate || USD (Liberty Reserve)<br />[[Pecunix]] || <br />
|-<br />
| [[Nanaimo Gold]] || Fixed Rate || USD (Liberty Reserve)<br />Western Union money transfer<br />Moneygram money transfer<br />Cash in the mail || LR <--> Bitcoin exchange is automated<br />For cash in the mail send USD, EUR, CAD, or GBP. Canada mailing address.<br />
|-<br />
| [[Bitcoin Morpheus]] || Fixed Rate || Cash, check or money order through the mail || U.S. mailing address for cash transactions.<br />
|-<br />
| [[Bitcoin Argentina]] || Fixed Rate || Cash: ARS, BRL, USD <br /> Bank transfer: ARS || No exchange fees!<br />
|-<br />
| [[Bitcoin.com.es]] || Fixed Rate || EUR (bank deposit) || Bank transfer or cash deposits at OpenBank in Spain.<br />
|-<br />
| [[Bahtcoin]] || Fixed Rate || Cash, Webmoney<br />Liberty Reserve USD || Will cash out to Thai mobile and gaming prepaid cards as well.<br />
|-<br />
| [[Bitcoin Brasil]] || Fixed Rate || BRL (Brazilian Real)<br />USD || Cash exchange<br />
|-<br />
| [[BitPiggy]] || Fixed Rate || AUD (Australian Dollar)|| Payment via bank transfer.<br />
|-<br />
| [[GetBitcoin]] || Fixed Rate || USD (Dwolla)<BR />USD (Bank wire)<BR />USD (Cash in the mail)<BR />USD (Money Order)<BR />USD (Cashier's Check/Certified Check)<BR />USD (Western Union)<BR />USD (Traveler's Check)<BR />USD (Prepaid Debit Card)<BR /> || For cash in mail, send USD. U.S. mailing address.<br />
|-<br />
| [[Bitcoin 4 Cash]] || Fixed Rate || Cash in the mail || Send USD or CAD. Canada mailing address.<br />
|-<br />
| [[Bitcoin2Cash]] || Fixed Rate || Cash in the mail || Send USD. U.S. mailing address.<br />
|-<br />
| [[bitcoin.local]] || Directory || Varies (person to person) ||<br />
|-<br />
| [[YouTipIt]] || Fixed Rate || USD<br />EUR<br />GBP || Purchase bitcoins to add to your balance with YouTipIt using credit card through ClickAndBuy.<br />
|-<br />
| [[Ubitex]] || In person exchange || Varies (person to person) ||<br />
|-<br />
| [[Bitcoil]] || Fixed Rate || ILS (bank transfer) ||<br />
|- <br />
|[[Accesscoin]] || Fixed Rate || USD (Google Checkout) || Requires Facebook account for second factor authentication ||<br />
|-<br />
|[[btcnow]] || Fixed Rate || USD (Google Checkout) ||<br />
|}<br />
<br />
==Other Financial Services==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment || Settled || Notes<br />
|-<br />
| [http://polimedia.us/bitcoin/options.php Derivatives] || Buy / Sell / Exercise CALLs / PUTs, American style.<br />52 strikes offered (by .5), current month + 2.<br /> No shorting available yet.|| BTC || BTC || Transactions encoded via amt.<br /> Must use non-rounding client<br />(0.3.24 or later)<br />
|}<br />
<br />
==See Also==<br />
<br />
* [[:Category:Digital_currencies|Digital Currencies]]<br />
* [[Selling bitcoins]]<br />
* [[Secure Trading]]<br />
* [[Comparison of exchanges]]<br />
* [[:Category:Local|Local]] exchanges<br />
<br />
[[Category:Exchanges]]<br />
[[Category:Introduction]]<br />
[[zh-cn:购买bitcoins]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Talk:Buying_bitcoins&diff=16618Talk:Buying bitcoins2011-09-15T00:04:08Z<p>Phantomcircuit: Created page with "There needs to be some standard way of ordering the exchanges. I propose they be ordered by 30 day volume in BTC."</p>
<hr />
<div>There needs to be some standard way of ordering the exchanges. I propose they be ordered by 30 day volume in BTC.</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Buying_bitcoins&diff=16616Buying bitcoins2011-09-15T00:00:48Z<p>Phantomcircuit: Putting yourself at the top of the page is not ok Keyur</p>
<hr />
<div>One issue currently facing a newcomer to bitcoin is, how do I get some? While there is the [[bitcoin faucet]] that can get you started with a small fraction of a coin, when getting larger amounts the user faces an abundance of choice. This page will cut through the clutter, and help direct you to the right exchanger for your needs.<br />
<br />
==Major Exchanges==<br />
<br />
The least expensive methods for buying bitcoins involve transferring funds using a bank wire, ACH, bank transfer (ACH, EUR / SEPA).<br />
<br />
{| class="wikitable"<br />
|-<br />
| Exchange || Type || Adding Funds || Withdrawing Funds || [[eWallet]] || Notes<br />
|-<br />
| [[MtGox]] || Market || BTC<br/>USD ([[Dwolla]])<br />USD (International bank wire)<br />USD (Wire to [[AurumXChange Company|AurumXChange]])<br />EUR (SEPA bank transfer) (currently disabled) <br />AUD (Bank wire)<br />GBP (Bank wire)<br />Liberty Reserve USD || BTC<br />USD ([[Dwolla]])<br />USD (Wire via [[AurumXChange Company|AurumXChange]])<br />USD (Check via [[Paxum]])<br />USD (ATM via [[Paxum]])<br />USD (wire via [[Paxum]])<br />EUR (SEPA bank transfer) (currently disabled)<br />AUD (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve USD (via AurumXChange) || {{Table Value Yes}} || Restrictions and limits on withdrawals.<br />
|-<br />
| [[Bitcoin-Central]] || Market || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />CAD (Cash deposit)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />PGAU [[Pecunix]] Gold || BTC<br />CAD (Interac)<br />CAD (Bank wire)<br />EUR (SEPA)<br />INR (Bank wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />[[Pecunix]] Gold || {{Table Value Yes}} || [https://github.com/davout/bitcoin-central Open-source], community reviewed platform<br />Available in French and English languages<br />
|-<br />
| [[TradeHill]] || Market || BTC<br/>USD (Domestic bank wire)<br>USD (International bank wire)<br/>USD (Check via [[Paxum]])<br />USD (wire via [[Paxum]])<br />EUR (SEPA bank transfer)<br />EUR (via [[Paxum]]<br />CAD (via [[Paxum]]<br />CLP (Bank transfer)<br />PEN (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || BTC<br/>USD (Domestic bank wire)<br/>USD (International bank wire)<br />USD (Direct deposit / ACH)<br />USD (Check via [[Paxum]])<br />USD (ATM via [[Paxum]])<br />USD (Prepaid card via [[Paxum]])<br />EUR (SEPA bank transfer)<br />EUR (via [[Paxum]]<br />CAD (via [[Paxum]])<br />CLP (Bank transfer)<br />INR (Bank transfer)<br />AUD (Bank transfer)<br />Liberty Reserve USD || {{Table Value Yes}} || <br />
|- <br />
| [[Britcoin]] || Market || BTC<br />GBP (bank deposit) || BTC<br />GBP (bank transfer) || {{Table Value Yes}} ||<br />
|-<br />
| [[Intersango]] || Market || BTC<br />USD ([[Dwolla]])<br />USD (Domestic bank wire)<br />USD (ACH)<br />EUR (SEPA bank deposit) || BTC<br />USD ([[Dwolla]])<br />EUR (SEPA bank transfer) || {{Table Value Yes}} ||<br />
|-<br />
| [[ExchB]] || Market || BTC<br/>USD (Cash or check)<br />USD (ING Person2Person)<br />USD (Bank wire)<br />USD (USPS Money Order by mail)<br />USD (Paxum) || BTC<br/>USD (Check)<br />USD (Bank wire)<br />USD (ACH)<br />USD (Paxum) || {{Table Value Yes}} || Cash or check deposits: Accepted at any Wells Fargo or Chase branch, or by mail.<br />
|-<br />
| [[HelloBitcoin]] || Market || BTC<br/>USD (Cwolla)<br />USD (Bank wire)<br />USD (Check) || BTC<br/>USD (Check)<br />USD (Bank wire)<br />USD (ACH) || {{Table Value Yes}} || Offers margin trading and shorting.<br />
|-<br />
| [[Bitcoin7]] || Market || BTC<br />EUR (SEPA Bank transfer)<br />USD (Domestic wire)<br />USD (International wire)<br />Liberty Reserve USD<br />Liberty Reserve EUR<br />BGN (Bank transfer) || BTC<br/>EUR (SEPA Bank transfer)<br />USD (Dwolla)<br />USD (Bank transfer)<br />Liberty Reserve USD<br />PLN (Bank transfer)<br />SAR (Bank transfer)<br />BGN (ePay)<br />BGN (Bank transfer) || {{Table Value Yes}} || USD wire to Citibank. EUR transfers to/from FiBank.<br />
|-<br />
| [[VirtEx]] || Market || BTC<br/>CAD (online bill pay)<br />CAD (cash at TDBank) || BTC<br/>CAD (direct deposit) || {{Table Value Yes}} ||<br />
|-<br />
| [[Mercado Bitcoin]] || Market || BTC<br/>BRL (Bank transfer)<br />BRL (Bank transfer - MoIP)<br />Liberty Reserve USD || BTC<br/>BRL (Bank transfer - MoIP) || {{Table Value Yes}} || Language: Portugese<br />
|-<br />
| [[BTC-E]] || Market || BTC<br/>USD ([[Liberty Reserve]])<br />USD (Interkassa) || BTC<br/>USD (Webmoney) || {{Table Value Yes}} || Language: Russian. Interkassa can be funded from Webmoney and many other methods.<br />
|-<br />
| [[Australian Bitcoin Exchange]] || Market || BTC<br />AUD (Electronic funds deposit)<br />AUD (Mtgox Redeemable Voucher) || BTC<br />AUD (Electronic funds transfer) || {{Table Value Yes}} || Restrictions and limits on withdrawals.<br /> Two-Factor Authentication<br /> Based in Queensland, Australia.<br /> Intersango Software.<br />
|-<br />
| [[BitChange.pl]] || Market || BTC<br />PLN (Bank wire) || BTC<br />PLN (Bank wire) || {{Table Value Yes}} ||<br />
|-<br />
| [[FreshBTC]] || Market || BTC<br />PLN (Bank wire) || BTC<br />PLN (Bank wire) || {{Table Value Yes}} ||<br />
|-<br />
| [[BitStamp]] || Market || BTC<br />EUR (SEPA transfer) || BTC<br />EUR (SEPA transfer) || {{Table Value Yes}} ||<br />
|-<br />
| [[VirWoX]] || Market || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br/>USD,EUR,GBP (Credit & Debit cards via [[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (DIRECTebanking / Sofortüberweisung)<br/>USD,EUR,GBP,CHF ([[paysafecard]])<br/>EUR (SEPA bank transfer) || BTC<br/>SLL (Second Life)<br/>ACD (Avination)<br/>OMC (OpenSim)<br/>USD,EUR,GBP,CHF ([[PayPal]])<br />USD,EUR,GBP ([[Moneybookers]])<br/>USD,EUR,GBP ([[NETELLER]])<br/>EUR (SEPA bank transfer) || {{Table Value Yes}} || Trading through Second Life Linden Dollars (highly liquid).<br/>Variable limits on PayPal and Credit Card deposits. <br />
|-<br />
| [[Camp BX]] (CBX) || Market || BTC <br />USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || BTC <br />USD (Check / ACH)<br />USPS Postal Money Order <br/> USD ([[Dwolla]])<br/> USD (Domestic bank wire)<br/>USD (International bank wire) || {{Table Value Yes}} || <ul> <li> Security certification from McAfee</li><li> Advanced trading options with AON/FOK/Market</li> <li>STOPLOSS and Short-Selling in Pipeline</li><li> Trading API available</li><li> Wallet API available </li><li> CBX Instant Bitcoin Transfers Feature </li><li> Stoploss / Custom Order Expiry Date/Time </li><li> SMS (Text Message) Notifications </li> <li> Two-Factor Authentication </li> <li> Based in USA - Atlanta </li> </ul> <br />
|-<br />
| [[WM-Center]] || Exchanger || BTC<br/>USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP || BTC<br />USD (International bank wire, Western Unon, Moneygram, Xoom etc, cash)<br />EUR (IBAN bank wire)<br />RUB (bank wire, WU, Anelik and etc, cash)<br />AUD (Bank wire)<br />Liberty Reserve USD/EUR, Perfect Money USD/EUR, Pecunix, Paxum, c-gold, Hoopay, GDP<br /> PayPal USD/EUR, Moneybookers, Neteller || {{Table Value No}} || 24/7/365 support in english, spanish and russian!<br />
|}<br />
<br />
==Fixed Rate Exchanges & Others==<br />
<br />
For smaller amounts, the options are limited due to bank transfer fees, conversion fees and transaction size restrictions. Options include:<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment Method || Notes<br />
|-<br />
| [[Bitcoin Market]] || Market || USD (Liberty Reserve)<br />USD (MoneyBookers)<br />GAU (Pecunix) || Varies (person to person)<br />
|-<br />
| [[BitMarket.eu]] || Market || EUR (Euro)<br />GBP (British Sterling Pound)<br />USD (U.S. Dollar)<br>PLN (Polish złoty)<br />AUD (Australian Dollar)<br />CAD (Canadian Dollar)<br />ZAR (South African Rand)<br />ILS (Israeli Shekel)<br />CHF (Swiss Franc)<br>RUB (Russian Ruble) || Varies (person to person)<br />
|-<br />
| [[Bitcoiny.cz]] || Market || CZK || Varies (person to person)<br />
|-<br />
| [[Bit]] / BTC China || Market || n/a || n/a<br />
|-<br />
| [[Bitfunnel]] || Credit Card payment exchange/brokering services || Varies (person to person)<br />
|-<br />
| [[bitcoin-otc|#bitcoin-otc]] || [http://bitcoin-otc.com/vieworderbook.php Order Book] || Varies (person to person) || IRC trading marketplace will usually have people willing to deal for small and larger amounts using various payment methods, including [[PayPal]], [[Dwolla]], [[Linden Dollars]], etc.<br />
|-<br />
| [[Lilion Transfer]] || Fixed Rate || USD (Liberty Reserve)<br />[[Pecunix]] || <br />
|-<br />
| [[Nanaimo Gold]] || Fixed Rate || USD (Liberty Reserve)<br />Western Union money transfer<br />Moneygram money transfer<br />Cash in the mail || LR <--> Bitcoin exchange is automated<br />For cash in the mail send USD, EUR, CAD, or GBP. Canada mailing address.<br />
|-<br />
| [[Bitcoin Morpheus]] || Fixed Rate || Cash, check or money order through the mail || U.S. mailing address for cash transactions.<br />
|-<br />
| [[Bitcoin Argentina]] || Fixed Rate || Cash: ARS, BRL, USD <br /> Bank transfer: ARS || No exchange fees!<br />
|-<br />
| [[Bitcoin.com.es]] || Fixed Rate || EUR (bank deposit) || Bank transfer or cash deposits at OpenBank in Spain.<br />
|-<br />
| [[Bahtcoin]] || Fixed Rate || Cash, Webmoney<br />Liberty Reserve USD || Will cash out to Thai mobile and gaming prepaid cards as well.<br />
|-<br />
| [[Bitcoin Brasil]] || Fixed Rate || BRL (Brazilian Real)<br />USD || Cash exchange<br />
|-<br />
| [[BitPiggy]] || Fixed Rate || AUD (Australian Dollar)|| Payment via bank transfer.<br />
|-<br />
| [[GetBitcoin]] || Fixed Rate || USD (Dwolla)<BR />USD (Bank wire)<BR />USD (Cash in the mail)<BR />USD (Money Order)<BR />USD (Cashier's Check/Certified Check)<BR />USD (Western Union)<BR />USD (Traveler's Check)<BR />USD (Prepaid Debit Card)<BR /> || For cash in mail, send USD. U.S. mailing address.<br />
|-<br />
| [[Bitcoin 4 Cash]] || Fixed Rate || Cash in the mail || Send USD or CAD. Canada mailing address.<br />
|-<br />
| [[Bitcoin2Cash]] || Fixed Rate || Cash in the mail || Send USD. U.S. mailing address.<br />
|-<br />
| [[bitcoin.local]] || Directory || Varies (person to person) ||<br />
|-<br />
| [[YouTipIt]] || Fixed Rate || USD<br />EUR<br />GBP || Purchase bitcoins to add to your balance with YouTipIt using credit card through ClickAndBuy.<br />
|-<br />
| [[Ubitex]] || In person exchange || Varies (person to person) ||<br />
|-<br />
| [[Bitcoil]] || Fixed Rate || ILS (bank transfer) ||<br />
|- <br />
|[[Accesscoin]] || Fixed Rate || USD (Google Checkout) || Requires Facebook account for second factor authentication ||<br />
|-<br />
|[[btcnow]] || Fixed Rate || USD (Google Checkout) ||<br />
|}<br />
<br />
==Other Financial Services==<br />
<br />
{| class="wikitable"<br />
|-<br />
| Service || Type || Payment || Settled || Notes<br />
|-<br />
| [http://polimedia.us/bitcoin/options.php Derivatives] || Buy / Sell / Exercise CALLs / PUTs, American style.<br />52 strikes offered (by .5), current month + 2.<br /> No shorting available yet.|| BTC || BTC || Transactions encoded via amt.<br /> Must use non-rounding client<br />(0.3.24 or later)<br />
|}<br />
<br />
==See Also==<br />
<br />
* [[:Category:Digital_currencies|Digital Currencies]]<br />
* [[Selling bitcoins]]<br />
* [[Secure Trading]]<br />
* [[Comparison of exchanges]]<br />
* [[:Category:Local|Local]] exchanges<br />
<br />
[[Category:Exchanges]]<br />
[[Category:Introduction]]<br />
[[zh-cn:购买bitcoins]]</div>Phantomcircuithttps://en.bitcoin.it/w/index.php?title=Developers&diff=16606Developers2011-09-14T18:35:55Z<p>Phantomcircuit: </p>
<hr />
<div>* '''This list is not complete.''' Please make updates/corrections as needed.<br />
* Attempt to sort by contribution<br />
* Legend:<br />
** "Author" = original author; "Lead" = current project lead<br />
{|<br />
| style="background:#90ff90" | active maintainer<br />
| style="background:#ffffaa" | has made contributions<br />
| style="background:#ff9090" | no involvement<br />
|}<br />
<br />
{|<br />
! Name !! Original !! BitcoinJ !! Tools !! Spesmilo !! Gentoo !! Supybot !! Other<br />
|-<br />
| Satoshi Nakamoto<br />
|style="background:#90ff90"|Author/Retired<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| Bitcoin original designer<br />
|-<br />
| [[Gavin Andresen]]<br />
|style="background:#90ff90"|Lead<br />
| {{Table Value No}}<br />
|style="background:#90ff90"|Author<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| sirius-m<br />
|style="background:#90ff90"|Retired<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| tcatm<br />
| {{Table Value Yes}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value Yes}}<br />
|-<br />
| Jeff Garzik<br />
| {{Table Value Yes}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|style="background:#90ff90"|cpuminer, pushpool<br />
|-<br />
| TD<br />
| {{Table Value No}}<br />
|style="background:#90ff90"|Author<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Daniel Folkinshteyn<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value Yes}}<br />
|-<br />
| Luke Dashjr<br />
|style="background:#ffffaa"|Few<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value Yes}}<br />
| {{Table Value Yes}}<br />
| {{Table Value Yes}}<br />
|style="background:#90ff90"|URI, Wallet protocols<br />
|-<br />
| genjix<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|style="background:#90ff90"|Author<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| https://bitcoinconsultancy.com/wiki/index.php/Libbitcoin<br />
|-<br />
| Matt Giuca<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value Yes}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Mizery De Aria<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|style="background:#90ff90"|Author<br />
| {{Table Value No}}<br />
|-<br />
| Laurent Bachelier<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value Yes}}<br />
| {{Table Value No}}<br />
|-<br />
| Florian Schmaus<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value Yes}}<br />
| {{Table Value No}}<br />
|-<br />
| BioMike<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value Yes}}<br />
| {{Table Value No}}<br />
|-<br />
| Chris Moore<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Matt Corallo<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Pieter Wuille<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Marius Hanne<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| David FRANCOIS<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Nils Schneider<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Giel van Schijndel<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Fabian H jr.<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| ovdeathiam<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Dev Random<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Michal Zima<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Venkatesh Srinivas<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Vegard Nossum<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| JoelKatz<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Joerie de Gram<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Johannes Henninger<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Jeroenz0r<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Han Lin Yap<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Wladimir J. van der Laan<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Abraham Jewowich<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Michael Bemmerl<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Eric Hosmer<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Dawid Spiechowicz<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Stéphane Gimenez<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Patrick Varilly<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Jay Weisskopf<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Dylan Noblesmith<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| James Burkle<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Jordan Lewis<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Dean Lee<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| xHire<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| HostFat<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Jakob Kramer<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| ariel<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| dabaopku<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Federico Faggiano<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| m0ray<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Danube<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Carlos Pizarro<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Blitzboom<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Daniel Holbert<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Jaromil<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Carlo Alberto Ferraris<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Forrest Voight<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Amir Yalon<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| John Maguire<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Ricardo M. Correia<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Dan Helfman<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| gjs278<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Dan Loewenherz<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Eric Swanson<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Santiago M. Mola<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Shane Wegner<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Sven Slootweg<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| ojab<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| sandos<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| Witchspace<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|-<br />
| laszloh<br />
|style="background:#ffffaa"|<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
| {{Table Value No}}<br />
|}<br />
<br />
==See Also==<br />
<br />
* [[Original client developers]]<br />
* [[People]]<br />
<br />
[[Category:Developer]]</div>Phantomcircuit