Bitcoin Wiki - User contributions [en]

Green address

2013-11-07T16:54:16Z

Zyo: install wallet is closed

A '''green address''' is a special trusted [[Bitcoin address]] that is used to indicate the origin of funds to a recipient. Assuming the recipient trusts the owner of the address to not attempt a [[Double-spending|double spend]], the recipient may treat the funds as confirmed the moment they arrive.

As an example, assume website Z accepts incoming Bitcoin payments, but also trusts the green address published by [[Mt. Gox]]. Customer C wants to withdraw funds from Mt. Gox and send them to a payment address of website Z. A customer who does a withdrawal from Mt. Gox can click the ''use green address'' checkbox, which will result in the payment being sent to the green address as an intermediate step before forwarding the payment to site Z. Site Z can confirm that the payment passed through Mt. Gox's green address and trust the payment as confirmed immediately, since it knows that the only party who could potentially perform an attack to reverse the payment is Mt. Gox, which is presumed unlikely.

The concept originated on the forums and was discussed in two threads<ref>https://bitcointalk.org/index.php?topic=48170</ref><ref>https://bitcointalk.org/index.php?topic=32818.0</ref>. Since then, it has been implemented by [[Instawallet]] [closed] and [[Mt. Gox]].

==See Also==

* [http://bitcoin.stackexchange.com/questions/1730/what-are-green-addresses/1731#1731 What Are Green Addresses] Q&A on StackExchange

==External Links==
===Sites that allow withdrawals from green addresses===
* [https://mtgox.com MtGox ]
* [https://www.bridgewalkerapp.com/ Bridgewalker Bitcoin Wallet]

===Sites that recognize green addresses===
* [[Btctip|BTCTip]]
* [https://www.bridgewalkerapp.com/ Bridgewalker Bitcoin Wallet]

==References==
<references/>

Buying Bitcoins (the newbie version)

2013-05-16T20:13:38Z

Zyo: /* Via Bank Transfer (EU) */

This page aims to be the best resource for new users to understand how to buy Bitcoins.
The existing [[Buying bitcoins]] page is too complex, and not transparent enough for new investors.
Be extremely careful when buying bitcoins from not accredited websites or individuals. Like in the real world there are many scammers around.

{{Counterparty-warning}}

== Intro ==
[http://bitcoin.stackexchange.com/questions/2293/how-can-i-buy-bitcoin-via-a-credit-card-or-paypal You can't reliably buy Bitcoins using PayPal or credit cards], because it is risky for the seller, and therefore few sellers will offer this. There are basically 4 reasons for that:
* The TOS of PayPal actually prohibit buying digital currency with it
* The buyer of bitcoins can always perform a chargeback and there is no way for the seller to contest that
* There are many hacked accounts and when PayPal realizes that such an account has been fraudulently used, they will also perform a chargeback
* PayPal doesn't like bitcoin, as the bitcoin network is in direct competition to it

There are several ways, depending on your location. Many sellers online will trade bitcoins for moneypak codes. See http://www.moneypak.com/

=== Via Bank Transfer (US) ===
[https://coinbase.com Coinbase] allows you to buy and sell bitcoin by connecting any U.S. bank account. Unfortunately, the site only sells a limited number of bitcoins each day. When demand for bitcoins is high, most purchase attempts return a message which indicates that you have hit the system-wide (not per user) limit on total bitcoin sales and suggests that you try again around 6am EST the next day.

=== Via Bank Transfer (EU) ===
[https://bitcoin-24.com Bitcoin-24.com] charges very low fees for SEPA transfers within the EU.
'''(Service not available/bank account frozen since April 12th)'''

=== Finding a direct seller online ===
If you can find another person that is willing to sell them to you, you can transfer him money via whatever method (including PayPal), and he'll send you the Bitcoins. The following websites can be used to find direct sellers online [[Bitcoin OTC]], [https://www.bitcoinary.com/ Bitcoinary] or the [https://bitcointalk.org/index.php?board=53.0 Currency Exchange Forum Section]. Be extremely cautious when using those methods, the best way is to ask an admin, moderator or a trusted person. Bitcoins are now also available at [http://www.amazon.com/gp/product/B00CPCHACM Amazon]. The seller only sells in low volumes so far, but it is a great way to turn amazon gift cards into bitcoin with no hassle, and probably one of the first ways to obtain bitcoin with a debit card or credit card.

=== Physical Trading ===
You might be able to find an individual you can [https://localbitcoins.com Buy bitcoins locally].
Always choose somebody with many reviews.

=== Bitinstant ===
You can buy Bitcoins via cash deposit or bank transfer using [[BitInstant]]. Here is a video tutorial explaining BitInstant: http://vimeo.com/44849463

=== Exchanges ===
The largest and most trusted exchange is [[MtGox]]. For a list of other major exchanges see [[Buying_bitcoins#Major_Exchanges|Major Exchanges]]

=== Blockchain (UK) ===
UK users can use [https://blockchain.info/wallet/deposit-pingit Barclays PingIt] or [https://blockchain.info/wallet/deposit-bank-transfer Bank Transfer] to purchase bitcoins from blockchain.info.

=== Instant bank transfers within the EU and UK ===
Buy bitcoins via the instant Sofort network through [[Bitcoin-24]]. It is a very fast, easy and secure method to deposit Euro instantlly.

== Avoiding Scams ==
Before using any service it is a good idea to look for reviews and feedback from previous customers. This can be done by simply googling the name of the website or company. The bitcointalk forums are also a good place to find discussions and reviews about services.

==Exchange Directories==
* [http://howtobuybitcoins.com/ HowToBuyBitcoins.com]
* [http://howtobuybitcoins.info/ HowToBuyBitcoins.info]

== Links ==
* http://bitcoin.stackexchange.com/questions/91/how-do-you-obtain-bitcoins
* http://bitcoin.stackexchange.com/questions/4194/whats-the-best-way-to-buy-bitcoin-noob-friendly
* [[Buying bitcoins]]
* http://www.reddit.com/r/Bitcoin/comments/nzg4o/the_canonical_newbie_guide_to_bitcoin/c3d5tmc

[[Category:Introduction]]

Instawallet

2013-04-08T17:51:05Z

Zyo: InstaWallet hack

An [[eWallet]] in which all that is needed to access and spend the funds in the wallet is the website address (URL).

This allows the service to be used anonymously, without needing even an e-mail address. The site includes a caveat warning about its use:
Instawallet does not aspire to be a Bitcoin bank and as such can only provide a medium level of security.
Please do not store more than some spare change here.

The wallet can be accessed via mobile with [http://play.google.com/store/apps/details?id=com.paymium.instawallet&hl=en Instawallet for Android] and [[FriendlyPay]] for iOS (jailbroken iPhone, iPad, iPod Touch).

==History==

The site was launched on April 29, 2011<ref>[http://bitcointalk.org/index.php?topic=6785.0 New, simple online wallet: www.instawallet.org - no signup required]</ref>. On March 6, 2012 it was announced that the operator of [[Bitcoin-Central]] and [[Paytunia]] had acquired the service and is now operating it<ref>[http://bitcointalk.org/index.php?topic=67602.0 Instawallet is back, alive and well!]</ref>.

Instawallet has been hacked on April 3rd and disable since then.

==See Also==

* [[Anonymity]]
* [[Easywallet.org]]

==External Links==

* [https://www.instawallet.org InstaWallet] Website
* [http://play.google.com/store/apps/details?id=com.paymium.instawallet&hl=en Instawallet for Android]

==References==
<references />

[[Category:eWallets]]
[[Category:Mobile]]