Bitcoin Wiki - User contributions [en]

Transaction accelerator

2023-08-27T14:56:27Z

Apichmedmam: Undo revision 69882 by Bitlabs (talk)

=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==

Caution: As editors, we strive to present you with the most reliable accelerators in the industry. However, we strongly encourage you to conduct your own research by reviewing authentic feedback and verifying the legitimacy of the businesses. It's important to be aware that there are numerous purported transaction accelerators that are, unfortunately, fraudulent schemes. Some of these claim to collaborate with mining pools on your behalf. Yet, due to the challenges in verifying such claims and the past contentious discussions around providing an exhaustive list, we have refined our approach.

Hence, we are now exclusively listing accelerators that are definitively and verifiably operated by established pools or miners, possessing a minimum of 0.1% of the total network hash rate. This stringent criterion has been adopted to ensure the accuracy and reliability of the information we present.

===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://www.btcaccelerator.io/ Bitcoin Accelerator] - is a service that allows you to get faster confirmations on your unconfirmed transactions. Operated by Mycelium Gear, we collaborate with more than twenty major mining pools to provide you with the fastest service to accelerate bitcoin transactions.

* [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://pool.viabtc.com/tool/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.

Transaction accelerator

2023-08-27T11:26:07Z

Apichmedmam:

Transaction accelerator

2023-08-27T11:09:36Z

Apichmedmam:

=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==

Caution: As editors, we strive to present you with the most reliable accelerators in the industry. However, we strongly encourage you to conduct your own research by reviewing authentic feedback and verifying the legitimacy of the businesses. It's important to be aware that there are numerous purported transaction accelerators that are, unfortunately, fraudulent schemes. Some of these claim to collaborate with mining pools on your behalf. Yet, due to the challenges in verifying such claims and the past contentious discussions around providing an exhaustive list, we have refined our approach.

Hence, we are now exclusively listing accelerators that are definitively and verifiably operated by established pools or miners, possessing a minimum of 0.1% of the total network hash rate. This stringent criterion has been adopted to ensure the accuracy and reliability of the information we present.

===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://www.btcaccelerator.io/ Bitcoin Accelerator] - is a service that allows you to get faster confirmations on your unconfirmed transactions. Operated by Mycelium Gear, we collaborate with more than twenty major mining pools to provide you with the fastest service to accelerate bitcoin transactions.

* [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://www.btcaccelerator.io/ Bitcoin Accelerator] - is a service that allows you to get faster confirmations on your unconfirmed transactions. Operated by Mycelium Gear, we collaborate with more than twenty major mining pools to provide you with the fastest service to accelerate bitcoin transactions.

* [https://pool.viabtc.com/tool/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.

Transaction accelerator

2023-08-26T21:28:02Z

Apichmedmam:

=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==

Caution: As editors, we strive to present you with the most reliable accelerators in the industry. However, we strongly encourage you to conduct your own research by reviewing authentic feedback and verifying the legitimacy of the businesses. It's important to be aware that there are numerous purported transaction accelerators that are, unfortunately, fraudulent schemes. Some of these claim to collaborate with mining pools on your behalf. Yet, due to the challenges in verifying such claims and the past contentious discussions around providing an exhaustive list, we have refined our approach.

Hence, we are now exclusively listing accelerators that are definitively and verifiably operated by established pools or miners, possessing a minimum of 0.1% of the total network hash rate. This stringent criterion has been adopted to ensure the accuracy and reliability of the information we present.

===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://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://www.btcaccelerator.io/ Bitcoin Accelerator] - is a service that allows you to get faster confirmations on your unconfirmed transactions. Operated by Mycelium Gear, we collaborate with more than twenty major mining pools to provide you with the fastest service to accelerate bitcoin transactions.

* [https://pool.viabtc.com/tool/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.

Transaction accelerator

2023-08-26T14:56:04Z

Apichmedmam:

Transaction accelerator

2023-08-26T14:10:38Z

Apichmedmam:

=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==

Caution: There are many supposed transaction accelerators that are outright scams. Some claim to work with pools on your behalf, but this wiki's editors cannot verify claims, and the prior attempt to provide a more comprehensive list was too heated. Therefore, only accelerators verifiably officially run by a pool or miner with at least 0.1% of network hashrate may be added to the list below.

===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://www.btcaccelerator.io/ Bitcoin Accelerator] - is a service that allows you to get faster confirmations on your unconfirmed transactions. Operated by Mycelium Gear, we collaborate with more than twenty major mining pools to provide you with the fastest service to accelerate bitcoin transactions.

* [https://pool.binance.com/en/acceleration 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://pool.viabtc.com/tool/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.

Transaction accelerator

2023-08-25T23:06:33Z

Apichmedmam: binance link

=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==

Caution: There are many supposed transaction accelerators that are outright scams. Some claim to work with pools on your behalf, but this wiki's editors cannot verify claims, and the prior attempt to provide a more comprehensive list was too heated. Therefore, only accelerators verifiably officially run by a pool or miner with at least 0.1% of network hashrate may be added to the list below.

===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://pool.binance.com/en/acceleration 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://www.btcaccelerator.io/ Bitcoin Accelerator] - is a service that allows you to get faster confirmations on your unconfirmed transactions. Operated by Mycelium Gear, we collaborate with more than twenty major mining pools to provide you with the fastest service to accelerate bitcoin transactions.

* [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.

Transaction accelerator

2023-08-25T23:05:54Z

Apichmedmam:

=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==

Caution: There are many supposed transaction accelerators that are outright scams. Some claim to work with pools on your behalf, but this wiki's editors cannot verify claims, and the prior attempt to provide a more comprehensive list was too heated. Therefore, only accelerators verifiably officially run by a pool or miner with at least 0.1% of network hashrate may be added to the list below.

===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://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://www.btcaccelerator.io/ Bitcoin Accelerator] - is a service that allows you to get faster confirmations on your unconfirmed transactions. Operated by Mycelium Gear, we collaborate with more than twenty major mining pools to provide you with the fastest service to accelerate bitcoin transactions.

* [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.

Vanitygen

2023-08-25T13:31:55Z

Apichmedmam:

'''Warning''': Refrain from utilizing Vanitygen on live websites. Using Vanitygen on websites is not recommended, as there is a high likelihood that these '''platforms might store the generated address's key''', putting your results and coins at risk of being stolen. For a more secure approach, consider employing Vanitysearch by Jean Luc Pons, an open-source and trusted alternative available on GitHub.

'''Vanitygen''' was the first command-line vanity Bitcoin address generator. A few other vanity address generators exist including '''Vanitygen-plus''' and '''VanitySearch'''.

If you're tired of the random addresses generated by regular Bitcoin clients, you can use a vanity address program to create a more personalized address. For example, you could create an address that starts '1Satoshi' and ask people to send Bitcoin to 1SatoshiHHqnDPRSfiZ5GXJ8Gk9dbjO.

Vanity address programs accept as input a pattern (e.g. 1Bitcoin) and create a public address and private key. The amount of time required to find a given pattern depends on how complex the pattern is, the speed of the computer, whether it is using CPU or GPU, and if you get lucky.

The example below (from 2014) illustrates a session of vanitygen. It takes about 10 seconds to create the new public and private keys using a Core 2 Duo E6600 CPU on x86-64 Linux.

Please note that vanitygen is a legacy program and that the information below is provided for historical purposes.

<syntaxhighlight lang="bash">
$ ./vanitygen 1Boat
Difficulty: 4476342
Pattern: 1Boat
Address: 1BoatSLRHtKNngkdXEeobR76b53LETtpyT
Privkey: 5J4XJRyLVgzbXEgh8VNi4qovLzxRftzMd8a18KkdXv4EqAwX3tS
</syntaxhighlight>

Vanitygen includes components to perform address searching on a CPU (vanitygen) and OpenCL-compatible GPU (oclvanitygen). Both can be built from source and are included in the Windows binary package. Also included is oclvanityminer, the vanity address mining client. Oclvanityminer can be used to automatically claim bounties on sites such as [[User:ThePiachu|ThePiachu]]'s [[Vanity Pool]].

Current version: 0.22.

Windows x86+x64 binaries [https://github.com/downloads/samr7/vanitygen/vanitygen-0.20-win.zip here]. PGP signature [http://insight.gotdns.org/~samr7/vanitygen-0.20-win.zip.asc here].

Get the source from [https://github.com/samr7/vanitygen GitHub]. Includes Makefiles for Linux and Mac OS X.

Main discussion at [https://bitcointalk.org/index.php?topic=25804.0 BitcoinTalk].

The latest source doesn't work properly for high-end AMD cards (7XXX and greater). The solution is to change line 459 in oclengine.c from: return quirks; to: return quirks & ~VG_OCL_AMD_BFI_INT;

Windows x86+x64 binaries that solve this problem plus provide support for compressed keys [https://lifeboat.com/oclvanitygen here]. PGP signature [https://lifeboat.com/oclvanitygen.zip.sig here]. If you have any problems with the binaries, join the relevant [https://bitcointalk.org/index.php?topic=301068.0 BitcoinTalk discussion].

== Expected keysearch rate ==
The table below shows the key search rate one can expect from different hardware. The last five examples, which use GPU processors, were taken from [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897 DaveF's list of speeds] that can be achieved with the [https://github.com/JeanLucPons/VanitySearch VanitySearch] address generator.

'''Keysearch Rates'''
{| class="wikitable sortable"
|-
! CPU !! GPU !! keys/s !! Comment
|-
| Core i5 750 @2.67 GHz || nVidia GTS 250 || 1.54 Mkey/s || 110% CPU [https://bitcointalk.org/index.php?topic=25804.msg378820#msg378820]
|-
| Core2 Duo 6600 || nVidia GTX 285 || 3.5 Mkey/s || 100% CPU / 90% GPU [https://bitcointalk.org/index.php?topic=25804.msg378114#msg378114]
|-
| Sempron 140 || AMD 5830 || 5.5 Mkey/s || 100% CPU / 60% GPU [https://bitcointalk.org/index.php?topic=25804.msg378114#msg378114]
|-
| || AMD Radeon r7 240 || 4 Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg11872747#msg11872747]
|-
| Core i7 || AMD 6500M || 4.5 Mkey/s || 98% GPU
|-
| || nVidia GeForce GTX 680M || 14-16 Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg11882134#msg11882134]
|-
| || nVidia GeForce GTX 970 || 38 Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg11851273#msg11851273]
|-
| Core i7-4702MQ 2.2GHz || || 1.09 Mkey/s ||
|-
| Core i7-4702MQ 2.2GHz || GeForce GT750M || 5.38 Mkey/s ||
|-
| || AMD Radeon r9 280x || 25-35 Mkey/s ||
|-
| || Sapphire Radeon HD 7970 || 28Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg12269936#msg12269936]
|-
| || AMD Radeon HD 5870 || 30 Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg12262017#msg12262017]
|-
| || Asus Strix GTX 970 || 40Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg12269936#msg12269936]
|-
| || nVidia GeForce GTX 780 Ti (3GB 384-bit GDDR5) || 50-60 Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg11944467#msg11944467]
|-
| Core i5-2500K @ 3.30GHz || AMD RX 480 || 57-64 Mkey/s || With AMD patch [https://nastyfans.org/download/oclvanitygen.txt]
|-
| || GeForce GTX 1060 3GB (9x128 cores) Grid(72x128) || 322 Mkey/s || [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897]
|-
| || GeForce GTX 1080 Ti (28x128 cores) Grid(224x128) || 896 Mkey/s || [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897]
|-
| || EVGA RTX 2080 XC ULTRA || 1425 Mkey/s || [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897]
|-
| || GPU #0 Tesla V100-SXM2-16GB (80x64 cores) Grid(640x128) || 1815 Mkey/s || [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897]
|-
| || GPU #0 GeForce RTX 2080 SUPER (48x64 cores) Grid(384x256) || 2002 Mkey/s || [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897]
|}

== Difficulty of finding a vanity address ==
The difficult of discovering a Bitcoin vanity address depends on its exact structure (what are the leading letters or numbers) and how likely such an output is given the algorithms involved, which can consist of several pivots where the difficulty suddenly changes.
{| class="wikitable"
|-
! vanity !! difficulty !! Comment
|-
| 1AAAAA || 259,627,881 ||
|-
| 1QLbz6 || 259,627,881 || This vanity is alphabetically located before a major pivot, the [[RIPEMD160]] hash value of 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF (address: 1QLbz7JHiBTspS962RLKV8GndWFwi5j6Qr).
|-
| 1QLbz7JHiBTspS962RLKV8GndWE || 2.9597E+45 ||
|-
| 1QLbz7 || 837,596,142 || This vanity is partially after a pivot and thus the difficulty increases.
|-
| 1QLbz7JHiBTspS962RLKV8GndWG || 1.6489E+47 || After a major pivot and 59 times as difficult as the 'E' vanity.
|-
| 1QLbz8 || 837,596,142 ||
|-
| 1aaaaa || 15,318,045,009 || After various pivots and subsequently more difficult.
|-
| 1zzzzz || 15,318,045,009 ||
|-
| 1abcdef || 888,446,610,539 || Six characters case sensitive starting with a lower case character.
|-
| 111111 || 1,099,511,627,776 || A special case: leading number 1 (one) is especially difficult.
|-
| 1abcdefg || 51,529,903,411,245 || Seven characters case sensitive starting with a lower case character.
|-
| 1abcdefgh || 2,988,734,397,852,220 || Eight characters case sensitive starting with a lower case character.
|}

== Using a vanity address generator to try to attack addresses ==
You might think that you would be able to find the private key for a given address by running a vanity address generator. In practice, this is considered impossible. Given that the difficulty increases exponentially the longer your vanity is, so does the average time required to find that vanity. The table below shows how an increasingly complex vanity affects the difficulty and average time required to find a match only for that vanity, let alone the full address, for a machine capable of looking through one million keys per second.

Note that many GPU implementations currently (March 2020) allow up to 1,000 Mkeys/s (or more). For example [https://vanitygen.io/ VanityGen] uses [https://github.com/JeanLucPons/VanitySearch VanitySearch] to search more than 7,000 Mkeys/s.

{| class="wikitable"
|-
! vanity !! difficulty !! average time
|-
| 1B || 22 || < 1s
|-
| 1Bi || 1,330 || < 1s
|-
| 1Bit || 77,178 || < 1s
|-
| 1Bitc || 4,476,342 (4.48E+6)|| < 10s
|-
| 1Bitco || 259,627,881 (2.6E+8)|| 3 minutes
|-
| 1Bitcoi || 15,058,417,127 (1.506E+10) || 3 hours
|-
| 1Bitcoin || 8.7339E+11 || 1 week
|-
| 1BitcoinE || 5.0657E+13 || 1 year
|-
| 1BitcoinEa || 2.9381E+15 || 60 years
|-
| 1BitcoinEat || 1.7041E+17 || 3,500 years
|-
| 1BitcoinEate || 9.8837E+18 || 200,000 years
|-
| 1BitcoinEater || 5.7325E+20 || 11,700,000 years
|-
| 1BitcoinEaterAddressDontSend || 1.6209E+47 || 3.3E+33 or 3.3 decillion years.
|}

== Outsourcing vanity address generation ==
The standard way to generate a vanity address is to calculate it yourself by downloading the program and then running it on your system. However, for longer prefixes, you are unlikely to have enough computational resources or time to calculate them. In these cases, you can outsource your vanity address generation to a [[Bitcoin Vanity Generation Website]]. A good idea is to use [https://vanitygen.io/ bitcoin address generation].

== See also ==
* [[Bitcoin Vanity Generation Website]]

[[Category:Vanity address]]

Vanitygen

2023-08-20T15:05:14Z

Apichmedmam: fixed broken links

'''Vanitygen''' was the first command-line vanity Bitcoin address generator. A few other vanity address generators exist including '''Vanitygen-plus''' and '''VanitySearch'''.

If you're tired of the random addresses generated by regular Bitcoin clients, you can use a vanity address program to create a more personalized address. For example, you could create an address that starts '1Satoshi' and ask people to send Bitcoin to 1SatoshiHHqnDPRSfiZ5GXJ8Gk9dbjO.

Vanity address programs accept as input a pattern (e.g. 1Bitcoin) and create a public address and private key. The amount of time required to find a given pattern depends on how complex the pattern is, the speed of the computer, whether it is using CPU or GPU, and if you get lucky.

The example below (from 2014) illustrates a session of vanitygen. It takes about 10 seconds to create the new public and private keys using a Core 2 Duo E6600 CPU on x86-64 Linux.

Please note that vanitygen is a legacy program and that the information below is provided for historical purposes.

<syntaxhighlight lang="bash">
$ ./vanitygen 1Boat
Difficulty: 4476342
Pattern: 1Boat
Address: 1BoatSLRHtKNngkdXEeobR76b53LETtpyT
Privkey: 5J4XJRyLVgzbXEgh8VNi4qovLzxRftzMd8a18KkdXv4EqAwX3tS
</syntaxhighlight>

Vanitygen includes components to perform address searching on a CPU (vanitygen) and OpenCL-compatible GPU (oclvanitygen). Both can be built from source and are included in the Windows binary package. Also included is oclvanityminer, the vanity address mining client. Oclvanityminer can be used to automatically claim bounties on sites such as [[User:ThePiachu|ThePiachu]]'s [[Vanity Pool]].

Current version: 0.22.

Windows x86+x64 binaries [https://github.com/downloads/samr7/vanitygen/vanitygen-0.20-win.zip here]. PGP signature [http://insight.gotdns.org/~samr7/vanitygen-0.20-win.zip.asc here].

Get the source from [https://github.com/samr7/vanitygen GitHub]. Includes Makefiles for Linux and Mac OS X.

Main discussion at [https://bitcointalk.org/index.php?topic=25804.0 BitcoinTalk].

The latest source doesn't work properly for high-end AMD cards (7XXX and greater). The solution is to change line 459 in oclengine.c from: return quirks; to: return quirks & ~VG_OCL_AMD_BFI_INT;

Windows x86+x64 binaries that solve this problem plus provide support for compressed keys [https://lifeboat.com/oclvanitygen here]. PGP signature [https://lifeboat.com/oclvanitygen.zip.sig here]. If you have any problems with the binaries, join the relevant [https://bitcointalk.org/index.php?topic=301068.0 BitcoinTalk discussion].

== Expected keysearch rate ==
The table below shows the key search rate one can expect from different hardware. The last five examples, which use GPU processors, were taken from [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897 DaveF's list of speeds] that can be achieved with the [https://github.com/JeanLucPons/VanitySearch VanitySearch] address generator.

'''Keysearch Rates'''
{| class="wikitable sortable"
|-
! CPU !! GPU !! keys/s !! Comment
|-
| Core i5 750 @2.67 GHz || nVidia GTS 250 || 1.54 Mkey/s || 110% CPU [https://bitcointalk.org/index.php?topic=25804.msg378820#msg378820]
|-
| Core2 Duo 6600 || nVidia GTX 285 || 3.5 Mkey/s || 100% CPU / 90% GPU [https://bitcointalk.org/index.php?topic=25804.msg378114#msg378114]
|-
| Sempron 140 || AMD 5830 || 5.5 Mkey/s || 100% CPU / 60% GPU [https://bitcointalk.org/index.php?topic=25804.msg378114#msg378114]
|-
| || AMD Radeon r7 240 || 4 Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg11872747#msg11872747]
|-
| Core i7 || AMD 6500M || 4.5 Mkey/s || 98% GPU
|-
| || nVidia GeForce GTX 680M || 14-16 Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg11882134#msg11882134]
|-
| || nVidia GeForce GTX 970 || 38 Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg11851273#msg11851273]
|-
| Core i7-4702MQ 2.2GHz || || 1.09 Mkey/s ||
|-
| Core i7-4702MQ 2.2GHz || GeForce GT750M || 5.38 Mkey/s ||
|-
| || AMD Radeon r9 280x || 25-35 Mkey/s ||
|-
| || Sapphire Radeon HD 7970 || 28Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg12269936#msg12269936]
|-
| || AMD Radeon HD 5870 || 30 Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg12262017#msg12262017]
|-
| || Asus Strix GTX 970 || 40Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg12269936#msg12269936]
|-
| || nVidia GeForce GTX 780 Ti (3GB 384-bit GDDR5) || 50-60 Mkey/s || [https://bitcointalk.org/index.php?topic=25804.msg11944467#msg11944467]
|-
| Core i5-2500K @ 3.30GHz || AMD RX 480 || 57-64 Mkey/s || With AMD patch [https://nastyfans.org/download/oclvanitygen.txt]
|-
| || GeForce GTX 1060 3GB (9x128 cores) Grid(72x128) || 322 Mkey/s || [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897]
|-
| || GeForce GTX 1080 Ti (28x128 cores) Grid(224x128) || 896 Mkey/s || [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897]
|-
| || EVGA RTX 2080 XC ULTRA || 1425 Mkey/s || [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897]
|-
| || GPU #0 Tesla V100-SXM2-16GB (80x64 cores) Grid(640x128) || 1815 Mkey/s || [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897]
|-
| || GPU #0 GeForce RTX 2080 SUPER (48x64 cores) Grid(384x256) || 2002 Mkey/s || [https://bitcointalk.org/index.php?topic=5112311.msg50823897#msg50823897]
|}

== Difficulty of finding a vanity address ==
The difficult of discovering a Bitcoin vanity address depends on its exact structure (what are the leading letters or numbers) and how likely such an output is given the algorithms involved, which can consist of several pivots where the difficulty suddenly changes.
{| class="wikitable"
|-
! vanity !! difficulty !! Comment
|-
| 1AAAAA || 259,627,881 ||
|-
| 1QLbz6 || 259,627,881 || This vanity is alphabetically located before a major pivot, the [[RIPEMD160]] hash value of 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF (address: 1QLbz7JHiBTspS962RLKV8GndWFwi5j6Qr).
|-
| 1QLbz7JHiBTspS962RLKV8GndWE || 2.9597E+45 ||
|-
| 1QLbz7 || 837,596,142 || This vanity is partially after a pivot and thus the difficulty increases.
|-
| 1QLbz7JHiBTspS962RLKV8GndWG || 1.6489E+47 || After a major pivot and 59 times as difficult as the 'E' vanity.
|-
| 1QLbz8 || 837,596,142 ||
|-
| 1aaaaa || 15,318,045,009 || After various pivots and subsequently more difficult.
|-
| 1zzzzz || 15,318,045,009 ||
|-
| 1abcdef || 888,446,610,539 || Six characters case sensitive starting with a lower case character.
|-
| 111111 || 1,099,511,627,776 || A special case: leading number 1 (one) is especially difficult.
|-
| 1abcdefg || 51,529,903,411,245 || Seven characters case sensitive starting with a lower case character.
|-
| 1abcdefgh || 2,988,734,397,852,220 || Eight characters case sensitive starting with a lower case character.
|}

== Using a vanity address generator to try to attack addresses ==
You might think that you would be able to find the private key for a given address by running a vanity address generator. In practice, this is considered impossible. Given that the difficulty increases exponentially the longer your vanity is, so does the average time required to find that vanity. The table below shows how an increasingly complex vanity affects the difficulty and average time required to find a match only for that vanity, let alone the full address, for a machine capable of looking through one million keys per second.

Note that many GPU implementations currently (March 2020) allow up to 1,000 Mkeys/s (or more). For example [https://vanitygen.io/ VanityGen] uses [https://github.com/JeanLucPons/VanitySearch VanitySearch] to search more than 7,000 Mkeys/s.

{| class="wikitable"
|-
! vanity !! difficulty !! average time
|-
| 1B || 22 || < 1s
|-
| 1Bi || 1,330 || < 1s
|-
| 1Bit || 77,178 || < 1s
|-
| 1Bitc || 4,476,342 (4.48E+6)|| < 10s
|-
| 1Bitco || 259,627,881 (2.6E+8)|| 3 minutes
|-
| 1Bitcoi || 15,058,417,127 (1.506E+10) || 3 hours
|-
| 1Bitcoin || 8.7339E+11 || 1 week
|-
| 1BitcoinE || 5.0657E+13 || 1 year
|-
| 1BitcoinEa || 2.9381E+15 || 60 years
|-
| 1BitcoinEat || 1.7041E+17 || 3,500 years
|-
| 1BitcoinEate || 9.8837E+18 || 200,000 years
|-
| 1BitcoinEater || 5.7325E+20 || 11,700,000 years
|-
| 1BitcoinEaterAddressDontSend || 1.6209E+47 || 3.3E+33 or 3.3 decillion years.
|}

== Outsourcing vanity address generation ==
The standard way to generate a vanity address is to calculate it yourself by downloading the program and then running it on your system. However, for longer prefixes, you are unlikely to have enough computational resources or time to calculate them. In these cases, you can outsource your vanity address generation to a [[Bitcoin Vanity Generation Website]]. A good idea is to use [https://vanitygen.io/ bitcoin address generation].

== See also ==
* [[Bitcoin Vanity Generation Website]]

[[Category:Vanity address]]