Bitcoin Wiki - User contributions [en]

Transaction accelerator

2023-12-22T20:10:56Z

Bitlabs: Undo revision 69978 by BitTools (talk)

Transaction broadcasting

Transaction accelerator

2023-08-26T14:16:33Z

Bitlabs: Removing links.

Vanitygen

2023-08-26T14:13:03Z

Vbbb.com

2023-08-21T17:14:34Z

Bitlabs:

'''This business has shut down its services, and the domain name is no longer operational. Please exercise caution to avoid any copies or phishing attempts.
'''
{{infobox company|name=VBBB.COM|image=[[File:vbbb_logo.png|225px]]
|trading_name=VBBB.COM
|industry=[[Exchange|Bitcoin exchange]]
|foundation=2012
|website=https://vbbb.com
}}

== VBBB.COM ==

[http://vbbb.com/ VBBB.COM] is a white-label solution for cryptocurrency exchanges.

==History ==

The VBBB platform is owned and operated by RUA Innovations LTS and based on BVI.
The company was established in 2012, and since the moment when VBBB platform started running it shows a rapid growth in both customer base and provided trade volume.

==Features==

VBBB Platform works on the principle of the franchises distribution with a single order book for all its customers what gives the maximum possible volume of trading.
VBBB uses Erlang, Python and JS at the expert level.
VBBB platform provodes the customer with the following functionality:
* Create own logo, brand and design
* Provide matching up to 1,700 orders per second as part of one of the servers
* FIX/FAST protocol
* Realtime API (plus widgets ready for broadcasting of the exchange rate on third-party resources)
* KYC module for his clients
* Adding any trading pairs
* Ensuring the liquidity of trading for major cryptocurrences
* CMS
* CRM
* ColdWallets
* Mobile version of the site(terminal) with company logo
* Trader's terminal wih positions, SWAP and margin trading
* Affiliate module
* 2FA - the optional possibility to protect users account is a two-factor authentication, it's special case of a multi-factor authentication. The available application is Google Authentication
* Google analytics module
* OAuth (Facebook, VK, Twitter etc.)
* MailChimp module
* Chat with moderation and the ability to connect via jabber
* Professional dashboard

==API==

VBBB.COM provides an API which is possible to use for automate operations.

==Trading Pairs==

VBBB.COM supports the exchange between the major currency pairs, such as:
*BTC/USD
*LTC/USD
*EUR/USD
*LTC/BTC
*BTC/EUR
*LTC/EUR
*NMC/USD
*NVC/USD
*TRC/BTC
*PPC/USD
*FTC/BTC
*XPM/BTC

==External links==

*[http://vbbb.com VBBB.COM website]

[[Category:Defunct exchanges]]

Transaction broadcasting

2023-08-21T16:34:13Z

Bitlabs: /* Added two more functional websites for bitcoin transaction rebroadcasting.*/

{{seealso|Satoshi Client Transaction Exchange}}

==See Also==

* [[Transaction accelerator]]

Third party sites to (re-)submit a raw, signed transaction to the network; sometimes referred to as "pushtx":

* https://coinb.in/#broadcast
* https://bitaps.com/broadcast
* https://explorer.viawallet.com/btc/tool/broadcast?lang=en_US
* https://btc.network/broadcast
* https://blockchair.com/broadcast
* https://live.blockcypher.com/btc/pushtx/
* https://btc.com/tools/tx/publish
* https://www.viabtc.com/tools/broadcast
* https://insight.bitpay.com/tx/send
* https://www.blockchain.com/explorer/assets/btc/broadcast-transaction
* https://www.f2pool.com/pushtx (Needs referral code from pool operator.)
* https://blockstream.info/tx/push
* https://bitaccelerate.com/pushtx/

==Footnotes==
[[Category:Developer]]

2023-07-23T15:46:41Z

Bitlabs: /* Mining Pool Accelerators */

=What to Do if Your Bitcoin Transaction Gets "Stuck"=

The number of transactions on the Bitcoin network has steadily increased over the years. This means more blocks are filling up. And as not all transactions can be included in the blockchain straight away, backlogs form in miners’ “mempools” (a sort of “transaction queue.”)

Miners typically pick the transactions that pay the most fees and include these in their blocks first. Transactions that include lower fees are “outbid” on the so called “fee market,” and remain in miners’ mempools until a new block is found. If the transaction is outbid again, it has to wait until the next block.

This can lead to a suboptimal user experience. Transactions with too low a fee can take hours or even days to confirm, and sometimes never confirm at all.

==Fee Bumping==

The recommended approach to "accelerating" a transaction is to perform a [[fee bumping]] methods, either [[replace by fee|replace-by-fee]] (RBF), or [[Transaction fees#Feerates_for_dependent_transactions_.28child-pays-for-parent.29|child-pays-for-parent]] (CPFP), which are available to:

* Sender of the Bitcoin transaction: Replace-by-fee (RBF), and Child-pays-for-parent (CPFP)
* Recipient of the Bitcoin transaction: Child-pays-for-parent (CPFP)

==Bitcoin transaction accelerators==

===Mining Pool Accelerators===

A mining pool may offer a premium service in which they will prioritize a transaction, usually for a fee. The ability for that pool to get a transaction confirmed is limited to their ability to get a block confirmed -- and most pools have a tiny [https://www.blockchain.com/pools fraction of the hashrate]. For example, if a pool has 10% of the hashrate, they mine about a block every 100 minutes (1 hour and 40 minutes), on average. If a pool has 5% of the hashrate, then they mine one block about every 200 minutes (3 hours and 20 minutes), on average.
* [https://btcaccelerators.com BTC Accelerator] - is a Bitcoin transaction accelerator platform that was launched in 2020 in San Francisco. The platform is dedicated to Accelerate stuck Bitcoin transactions in the bitcoin network, ensuring swift confirmation within a short span of time. Through strategic collaborations with multiple large mining pools, the Platform significantly increases the likelihood of transaction inclusion in the next block.

* [https://binance.com Binance Pool] - is a prominent cryptocurrency mining pool operated by Binance, one of the world's leading blockchain and cryptocurrency exchange platforms. In addition to its mining services, Binance Pool offers exclusive transaction acceleration services for VIP users, ensuring swift confirmation of their cryptocurrency transactions.

* https://pushtx.btc.com: This service is provided by BTC.com in cooperation with several main mining pools. The fee was around 70 USD on December 20, 2017 and the transaction was confirmed within 3 hours. You can pay by BCH or country-specific methods and they estimate the fee based on the transaction size. They promise a chance of 75% for including transactions in the next block within one hour. Within 4 hours the chance is claimed to be at 98%. They guarantee that if the transaction isn’t confirmed in 12 hours, the fees will be fully refunded to your card within 10 ~ 15 days. This policy is not applicable to the transactions which are removed or double-spent during the acceleration process.

* [https://pool.viabtc.com/tools/txaccelerator/ ViaBTC] - Working as of December 30, 2020. ViaBTC implemented this service to protest against the prior 1MB limitation of the Bitcoin network. ViaBTC gives priority to user-submitted transactions for the next mined blocks by the ViaBTC pool. The only requirement is the transaction must include a minimum fee of 10 sat/B. The free-to-use nature of the service may have made it widely popular as every hour, the number of transaction requested reaches its limit (of 100) and it is common to be presented with the message “Submissions are beyond limit. Please try later.” on the top middle of the page. This means one must wait for the next hour to try a new submission. After submitting a transaction, there is a wait for the next block to be mined by ViaBTC Pool.

* [https://btcnitro.com BTC Nitro] - Similar to the services listed above, BTC Nitro works with a number of mining pools and will insert your transaction into a block about to be be mined for a flat fee of $25 USD. They also guarantee a full refund of the fee if the transaction you want to accelerate doesn't get confirmed within 24 hours of payment.

* [https://bitaccelerate.com/ BitAccelerate] - Working as of August 22, 2018. BitAccelerate offers both free and paid versions of its service. The free version serves as a rebroadcasting service. If the transaction does not have any unconfirmed inputs, a premium version is offered. The company collaborates with one of the largest mining pools, prioritizing transactions for their customers.

===Third Party Accelerators===
There are additional services claiming to be able to "accelerate" a transaction. Their ability to get a transaction confirmed faster is limited to re-[https://en.bitcoin.it/wiki/Transaction_broadcasting broadcasting] your transaction, to help in the situation where that mining pool has dropped your transaction already. The Bitcoin Core client already does re-broadcast a "stuck" transaction periodically to peer nodes, though these services possibly may broadcast a transaction directly to known mining pool nodes. These services could also pay a mining pool to include your transaction, just as you could do that yourself.

It is likely these "transaction accelerators" that are not the mining pools themselves '''are not actually helping to get a transaction confirmed faster'''.

* https://btcnitro.com/ This is the free service offered by BTC Nitro that just rebroadcasts your transaction to the blockchain using various public and private nodes.
* https://txbooster.com Free Bitcoin transaction accelerator. The service actually rebroadcasts your transaction via different nodes.

Transaction accelerator

2023-07-11T13:17:05Z

Bitlabs: The phishing- Scam websites that were reported have been removed.

=What to Do if Your Bitcoin Transaction Gets "Stuck"=

The number of transactions on the Bitcoin network has steadily increased over the years. This means more blocks are filling up. And as not all transactions can be included in the blockchain straight away, backlogs form in miners’ “mempools” (a sort of “transaction queue.”)

Miners typically pick the transactions that pay the most fees and include these in their blocks first. Transactions that include lower fees are “outbid” on the so called “fee market,” and remain in miners’ mempools until a new block is found. If the transaction is outbid again, it has to wait until the next block.

This can lead to a suboptimal user experience. Transactions with too low a fee can take hours or even days to confirm, and sometimes never confirm at all.

==Fee Bumping==

The recommended approach to "accelerating" a transaction is to perform a [[fee bumping]] methods, either [[replace by fee|replace-by-fee]] (RBF), or [[Transaction fees#Feerates_for_dependent_transactions_.28child-pays-for-parent.29|child-pays-for-parent]] (CPFP), which are available to:

* Sender of the Bitcoin transaction: Replace-by-fee (RBF), and Child-pays-for-parent (CPFP)
* Recipient of the Bitcoin transaction: Child-pays-for-parent (CPFP)

==Bitcoin transaction accelerators==

===Mining Pool Accelerators===

A mining pool may offer a premium service in which they will prioritize a transaction, usually for a fee. The ability for that pool to get a transaction confirmed is limited to their ability to get a block confirmed -- and most pools have a tiny [https://www.blockchain.com/pools fraction of the hashrate]. For example, if a pool has 10% of the hashrate, they mine about a block every 100 minutes (1 hour and 40 minutes), on average. If a pool has 5% of the hashrate, then they mine one block about every 200 minutes (3 hours and 20 minutes), on average.

* https://pushtx.btc.com: This service is provided by BTC.com in cooperation with several main mining pools. The fee was around 70 USD on December 20, 2017 and the transaction was confirmed within 3 hours. You can pay by BCH or country-specific methods and they estimate the fee based on the transaction size. They promise a chance of 75% for including transactions in the next block within one hour. Within 4 hours the chance is claimed to be at 98%. They guarantee that if the transaction isn’t confirmed in 12 hours, the fees will be fully refunded to your card within 10 ~ 15 days. This policy is not applicable to the transactions which are removed or double-spent during the acceleration process.

* [https://pool.viabtc.com/tools/txaccelerator/ ViaBTC] - Working as of December 30, 2020. ViaBTC implemented this service to protest against the prior 1MB limitation of the Bitcoin network. ViaBTC gives priority to user-submitted transactions for the next mined blocks by the ViaBTC pool. The only requirement is the transaction must include a minimum fee of 10 sat/B. The free-to-use nature of the service may have made it widely popular as every hour, the number of transaction requested reaches its limit (of 100) and it is common to be presented with the message “Submissions are beyond limit. Please try later.” on the top middle of the page. This means one must wait for the next hour to try a new submission. After submitting a transaction, there is a wait for the next block to be mined by ViaBTC Pool.

* [https://btcnitro.com BTC Nitro] - Similar to the services listed above, BTC Nitro works with a number of mining pools and will insert your transaction into a block about to be be mined for a flat fee of $25 USD. They also guarantee a full refund of the fee if the transaction you want to accelerate doesn't get confirmed within 24 hours of payment. BTC Nitro also offer free rebroadcasting service for those who just wish to rebroadcast their transaction to the blockchain.

===Third Party Accelerators===
There are additional services claiming to be able to "accelerate" a transaction. Their ability to get a transaction confirmed faster is limited to re-[https://en.bitcoin.it/wiki/Transaction_broadcasting broadcasting] your transaction, to help in the situation where that mining pool has dropped your transaction already. The Bitcoin Core client already does re-broadcast a "stuck" transaction periodically to peer nodes, though these services possibly may broadcast a transaction directly to known mining pool nodes. These services could also pay a mining pool to include your transaction, just as you could do that yourself.

It is likely these "transaction accelerators" that are not the mining pools themselves '''are not actually helping to get a transaction confirmed faster'''.

* https://btcnitro.com/ This is the free service offered by BTC Nitro that just rebroadcasts your transaction to the blockchain using various public and private nodes.