Bitcoin Forum

Yes, you can use a software called vanitygen. Make sure you download from the original official source and run it OFFLINE.

Time will depend on how many letters you want.  Even if using a few graphics cards if you get to 8-9 letter ones your looking at possibly a lot of time.

i mean can i create any address that i like for example:
1POOYA87blahbalh(random)

bitcoin address is determined by the system created by the place we make our wallet, so we can not determine the address of our own bitcoin wallet, which only we can do is make as many of our bitcoin address for storing bitcoin we collect, hopefully we can gather bitcoin as many ...  8)

I consider vanity addresses to be an unnecessary security risk.

Let's say I create my address 1Vod............. and I use it for all my receivables.  People get used to seeing the 1Vod.

It would be trivial for another user to create another different address with 1Vod in it in an attempt to scam the unsuspecting.   :-\

Please be aware that if you receive a nice public address from someone else, he or she can also access the funds stored at this address!

Im using online generator. Its easier and faster for me http://bitcoinvanitygen.com/
My address: 1veLKroPwcYvWYv8vcGVJEajQAdnf7f7H

It seems to me that site doesn't offer split key vanity address. I would rather stay away with it for safety of my bitcoin.

Yes, it is easier and faster but not secure which is the important factor when using any type of currencies. Giving a signed blank cheque to a stranger. Don't ever use online vanity address generator. They do use split-key vanity address but after the address is made, an output is made. And they are fetching data's from output to show in the website. If they didn't delete that output file from the computer, they can see your private key which means they can sprnd your BTC anytime. They may not move firstly, but when your address got many mBTC, say 0.05+BTC, they may move the BTC to their wallet. The private keys can be retrieved from the server too. So please try to avoid such things! If you don't have enough computing power to create s vanity address, create in the way, I suggested.

   ~~MZ~~

yes, i know. the only reason i made this topic is that i was visiting eztv.it (a site that i was using for a longtime Smiley) and suddenly i saw their donation address and it was something like 1EZTV..... so i was curious to know how they did that

It seems to me that site doesn't offer split key vanity address. I would rather stay away with it for safety of my bitcoin.

Not everyone is IT-tech expert, so they must trust some people/some businesses to receive what they want in IT world.
It would be perfect world where everybody would be computer security expert and would do everything by themselves, but this is reality, and people need help often.
( Which is not good for bitcoin overall, but there is no other way )

as far as i found out about Vanity gen and its toppic here: https://bitcointalk.org/index.php?topic=25804.0
the address can be created offline and it doesnt seem to need any kind of special computing power!
also the source is available at github so..... i don't think it can contain any kind of shenanigans in the background

i mean can i create any address that i like for example:
1POOYA87blahbalh(random)
----------------------------
EDIT: i got my answer, thank you all
found this thread : https://bitcointalk.org/index.php?topic=25804.0

So, I cannot throw the dice and choose random numbers for a private key, and then generate the public address from the private key?

Ah... I get it, you want a specific public address?

So if it's possible to generate your own public address, it should in theory be possible to hack it's private key?

I thought it was only possible to create your own private key, not your own custom public address? ^confused^

So, I cannot throw the dice and choose random numbers for a private key, and then generate the public address from the private key?

Ah... I get it, you want a specific public address?

So if it's possible to generate your own public address, it should in theory be possible to hack it's private key?

I thought it was only possible to create your own private key, not your own custom public address? ^confused^

That is in effect what I am saying.

If you have someones private key, you can figure out what his public adress is, but not the other way around.

So how do you get the private key for a public address you designed yourself?

Does these Vanity tools only give you enough room to create, say the first 8 caracters, due to the lack of processing power to generate a full address?

If you have someones private key, you can figure out what his public adress is, but not the other way around.

So how do you get the private key for a public address you designed yourself?

Does these Vanity tools only give you enough room to create, say the first 8 caracters, due to the lack of processing power to generate a full address?

How much you can choose from that desired address ?

Didn't get you, please specify. If you meant characters, then its your choice but longer it is, harder it is to generate.

   ~~MZ~~

I've always wondered what the required computational power for generating vanity addresses is. Could anyone point me in the right direction for this info? Thanks.

 =snip=

Prefixes are also very fast to search, and a list of thousands of prefixes may be specified with little or no reduction in key search rate.

Regular expressions are programmable pattern filters.  They are very powerful, and can be used to match prefixes, suffixes, varying-length sequences, etc..  For a quick tutorial, see http://www.regular-expressions.info/quickstart.html (http://www.regular-expressions.info/quickstart.html).  To enable regular expressions, use the -r command line option.  Unfortunately, regular expressions are very slow, and will have a significant impact on key search rate.  Because of this, regular expressions should only be used if their expressive power is needed.

Oclvanitygen is only effective at searching for prefixes.  Regular expressions will not work effectively with oclvanitygen, as oclvanitygen is currently unable to execute the regular expression on the GPU.

What key search rate can I expect from hardware X?

Detailed list forthcoming.  Some ballpark estimates are listed below.

Dual-core desktop CPUs, 32-bit mode: 100-250 Kkey/s.
Dual-core desktop CPUs, 64-bit mode: 150-450 Kkey/s.
Quad-core desktop CPUs, 32-bit mode: 200-400 Kkey/s.
Quad-core desktop CPUs, 64-bit mode: 300-750 Kkey/s.

As vanitygen performs a lot of large integer arithmetic, running it in 64-bit mode makes a huge difference in key search rate, easily a 50% improvement over 32-bit mode.  If you are using a 64-bit edition of Windows, and not using a GPU, be sure to use vanitygen64.exe.

In custom builds, CPU performance will be less than expected if the OpenSSL library is an older version (<1.0.0d) or is not built with the appropriate optimizations enabled.

General formulas for expected performance on GPUs

NVIDIA GeForce 96xx, 98xx, GT 1xx, GT 2xx, GTX 2xx (G90/GT200):
Key/s = (CUDA Cores) x (Shader MHz) x 17

AMD Radeon 58xx, 59xx, 67xx, 68xx (VLIW5):
Key/s = (Stream Processors) x (Core MHz) x 20.1

AMD Radeon 69xx (VLIW4):
Key/s = (Stream Processors) x (Core MHz) x 13.6

AMD GCN, NVIDIA Fermi/Kepler: Please contribute some numbers!

Unfortunately, AMD VLIW4 does not perform as well as VLIW5 with the same number of cores/clocks.  Oclvanitygen is sensitive to integer multiply throughput, and VLIW5 can multiply concurrently with other operations, whereas multiply consumes all four ALUs in VLIW4.  At similar clocks, a hobbled Radeon 5830 will outperform a Radeon 6970.