Bitcoin Forum

Hi All,

I have seen many address include their brand name.
Can you choose wallet address for blockchain?
Or can we change it?

wallet MUST be on local tool ... and NEVER hosted by an other (and unknown) party (on internet).

Do a search for vanitygen

If you want to change the address you have on blockchain.info you need to import a specific private key. There is a tool called vanitygen, as has been suggested, that can generate the private key to a specific address. Keep in mind however that this might take a while. 1blasomething is easy 1IwantThisAddresssomething will most likely not be found while you are alive.

They are vanity address.

Check the service thread to see someone :)

You could do it, but the more characters you want, the more expensive it is.

For 6 characters, it is about 8 days to have 50% chance to find one address who matched (depends on your computer...)

yip do this then just import into bitcoin-qt (if that is your client.. and if so instructons below apply)

click debug, open console

if your wallet is password protected WHICH IT SHOULD BE do step #1

#1
walletpassphrase    <passphrase> <timeout>

e.g

walletpassphrase mypassword 60

#step 2
importprivkey <bitcoinprivkey> [label] [rescan=true]

e.g

importprivkey fjffjsfjfsjsfjfsfefjss myvanityaddress

#step 1 explanation
You need to unlock your wallet first so you can import the priv key, it will unlck for 60 seconds in my example, so you hve 60 seconds to enter in step #2 (regardless of how long the rescan takes as I mention below... after 60 seconds it will lock again)

#step 2 explan
the label is just the label you see in the recieved address section.
you can do rescan=false if you do not want want to rescan entrie blockchain for transactions. if its a brand new address, you might as well do rescan=false... by default it will do a rescan=true which can take a good 10-20 mins depending on your system.

RPC list is here... it might be outdated as it is a bit old now.. but still works a treat
You can verify the commands here yourself to make sure i'm not saying anything dodgy :)

https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_calls_list

i used web service for this, dont have any good hardware to generate 6 letters vanity address in any real time
http://bitcoinvanitygen.com

now i'm not saying it can't be trusted, but how do you know it can be trusted ??

btw you don't have any ATI GPU's ? even crap laptop ones do a fairly good job.

I didn't know this service. Very quick and paper wallet is beautiful.

However, for a 6 letters case sensitive, i would have to pay, so i prefer to wait for my computer.

This is great.
But how can i use this address for my blockchain wallet?

In blockchain wallet, you have to go in "Import/Export" tab, and then enter the private key in "Import private key" field.

Very easy.

Ok got in their FAQ.

Thanks buddies for help

Can you share the FAQ ? the link please dude ?
i am interested in this to but a bit scared of using a website to do it for me.

Here it is http://bitcoinvanitygen.com/bitcoinvanityaddress.php

Now my concern is how safe it is to use third party address?

thanks for that dude :)

I am going to look into vanitygen. you run it locally it seems so not third party. I think my AMD card will support it. I need a fancy vanity address because umm well you know haha ill think of something.

i don't trust those generators. i just stick with my local wallet's "new address" function.

But but but they offer a refund!


http://weknowmemes.com/wp-content/uploads/2012/03/ahm-keepin-my-money.jpg

Wow -- if that's not a red flag, I don't know what is. It's as if they didn't even stop to think about how they'd convince people to fall into a scam.

never EVER use sites like these. I used one, and the site was compromised and every address that I had made on there was wiped and the funds were sent to the hacker. These sites do hold the private keys, and if it gets hacked or the owner decides to take them away, you will lose. Generate them yourself

Your best bet is to "tag" your address so that Blockchain.info shows your "custom" name wherever someone looks at your BTC address.

Yes you can use a Vanity Generator to find an address with a name you like
You need to trust the generator though so be careful when generating an address using one.

Do NOT USE BitcoinVanity Gen!

Use one of these ones

https://bitcointalk.org/index.php?topic=25804.0
https://en.bitcoin.it/wiki/Vanitygen

Yes exact. I do agree with you.

Even generating 1b1asomething isn't easy. It would take my computer 8.8*10^11 years at 50 Kkey/s per second to generate that. The rise in difficulty per additional character is exponential so 1b1a would be easy (a minute or two at most), 1b1aso would be moderately difficult (a couple of hours to a day or two), and 1b1asome would be very difficult (a couple of years to a decade or two).

I managed to generate 14money and 1norgan overnight. Anything longer starts to quite weeks and years. Also use -I on vanitygen so it doesn't worry about case as that adds quite a bit of time to find one.

I think it's about 58 times more for each character you add:


So if those take overnight to generate then adding one more character would make it take about a month and another one on top of that would take about five years.

Yeah, that sounds about right from my experience, although I've found that some characters take less/more time to find than others.

You need to remember that this is only an average, it could very well take longer then this (or less time).

You can use a vanity address generator, it will generate thousands of private keys until it matches your desired keyword inside. Keyword is usually 6-7 letters.

It sounds very much like the site owner "hacked" his own site. :P

It isn't good to even let third party to help you to generate your private key, especially when it doesn't even use https protection. The third party can hack your private key since they generated it for you.

Indeed, I would never use a bitcoin address that I hadn't generated myself. That's just a huge security risk. Plus, I never saw the big attraction with vanity addresses. They're just for transacting with, not advertising.... not effect advertising, anyway. ;)

There is a way to securely use vanity addresses generated by someone other than yourself if you use the split-key method (http://en.bitcoin.it/wiki/Split-key_vanity_address):

Exactly. The third party won't have your private key at all with split key.
For more technical details, you may refer to https://bitcointalk.org/index.php?topic=19080.0;all