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Author Topic: Vanitygen: Vanity bitcoin address generator/miner [v0.22]  (Read 1108760 times)
defcon23
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April 23, 2016, 02:12:08 PM
 #2701

How can I login my generated Address?
You can use your generated address by using the Private key generated by vanity gen. Open a wallet like electrum or bitcoin core, enter your Private key into it and your address would get imported ! Now you can use this wallet to send and receive bitcoins to this vanity address.
  that's not the asked question.




How can I login my generated Address?
what do you mean by "login" ?  you mean watching or loading .. ?   Roll Eyes
I forgot my private key Sad can I generate again?
no. really impossible to get a coliision ( soooo improbable)
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April 23, 2016, 02:15:23 PM
 #2702

I forgot to copy the private key.
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April 23, 2016, 02:16:20 PM
 #2703

I forgot to copy the private key.
man : already answered one post above: NO you cant.
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April 23, 2016, 02:38:15 PM
 #2704

I forgot to copy the private key.
To prevent this in future you can use the following code :

Code:
vanitygen64.exe -o file.txt 1Addy

This would save your generated address and private key into "file.txt" in the same folder where vanitygen is.

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DaveF
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April 23, 2016, 02:47:22 PM
 #2705

More info. I added some RAM to the system and it kept going for almost 2 days before crashing.
I'm thinking something in one of the windows updates is causing some kind of memory leak in the program or the driver, but that is a guess at best.

I'll throw in another 4GB stick later in the week and try again.

-Dave

The computer doesn't need more Ram (all the work is being done on the GPU).  Have you updated your GPU's drivers?

OgNasty made a patch, search this thread for "LifeBoat"
That's the one I'm using.
I know system RAM should not matter, but @ 2 GB it will never make more then 18 hours. With 4 it makes it more then double that.

Latest NVIDIA drivers are installed.

-Dave

It's definitely something with system RAM
2 GB = 18 hrs before crash
4 GB = Almost 2 days before crash
8 GB = Over 3 1/2 days and still going....

However, I noticed that according to task manager it's not using that much memory. Very odd.

Also, dose anyone know the reason why it's using 50% CPU when all I have it doing is mining the the graphics card?

-Dave











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April 23, 2016, 02:58:26 PM
 #2706

I forgot to copy the private key.
To prevent this in future you can use the following code :

Code:
vanitygen64.exe -o file.txt 1Addy

This would save your generated address and private key into "file.txt" in the same folder where vanitygen is.
Thank you sir for helping me. Smiley
LoyceV
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April 23, 2016, 03:29:04 PM
 #2707

It's definitely something with system RAM
2 GB = 18 hrs before crash
4 GB = Almost 2 days before crash
8 GB = Over 3 1/2 days and still going....

However, I noticed that according to task manager it's not using that much memory. Very odd.
Does anything change if you increase swap-size? Memory leaks may be swapped away.
Alternative: take 2 GB ram and run oclvanitygen a few hours, then restart it. Repeat that and see if it crashes again.

Quote
Also, dose anyone know the reason why it's using 50% CPU when all I have it doing is mining the the graphics card?
Here it uses full CPU while mining on Nvidia. I assume it needs CPU to deal with the keys it finds or something. So the videocard just produces millions of keys per second, the CPU checks if they are the right keys. But I'm just guessing here Smiley

Edit: after reading shorena (see below) I am curious now what the CPU is doing Smiley

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April 23, 2016, 08:17:34 PM
 #2708

-snip-
Quote
Also, dose anyone know the reason why it's using 50% CPU when all I have it doing is mining the the graphics card?
Here it uses full CPU while mining on Nvidia. I assume it needs CPU to deal with the keys it finds or something. So the videocard just produces millions of keys per second, the CPU checks if they are the right keys. But I'm just guessing here Smiley

The GPU can check as well. See the comment here[1].

[1] https://github.com/samr7/vanitygen/blob/master/oclengine.c#L1424

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April 24, 2016, 01:49:47 PM
 #2709

It's definitely something with system RAM
2 GB = 18 hrs before crash
4 GB = Almost 2 days before crash
8 GB = Over 3 1/2 days and still going....

However, I noticed that according to task manager it's not using that much memory. Very odd.
Does anything change if you increase swap-size? Memory leaks may be swapped away.
Alternative: take 2 GB ram and run oclvanitygen a few hours, then restart it. Repeat that and see if it crashes again.

Quote
Also, dose anyone know the reason why it's using 50% CPU when all I have it doing is mining the the graphics card?
Here it uses full CPU while mining on Nvidia. I assume it needs CPU to deal with the keys it finds or something. So the videocard just produces millions of keys per second, the CPU checks if they are the right keys. But I'm just guessing here Smiley

Edit: after reading shorena (see below) I am curious now what the CPU is doing Smiley
your guessing wrong Wink

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April 24, 2016, 01:50:20 PM
 #2710

More info. I added some RAM to the system and it kept going for almost 2 days before crashing.
I'm thinking something in one of the windows updates is causing some kind of memory leak in the program or the driver, but that is a guess at best.

I'll throw in another 4GB stick later in the week and try again.

-Dave

The computer doesn't need more Ram (all the work is being done on the GPU).  Have you updated your GPU's drivers?

OgNasty made a patch, search this thread for "LifeBoat"
That's the one I'm using.
I know system RAM should not matter, but @ 2 GB it will never make more then 18 hours. With 4 it makes it more then double that.

Latest NVIDIA drivers are installed.

-Dave

It's definitely something with system RAM
2 GB = 18 hrs before crash
4 GB = Almost 2 days before crash
8 GB = Over 3 1/2 days and still going....

However, I noticed that according to task manager it's not using that much memory. Very odd.

Also, dose anyone know the reason why it's using 50% CPU when all I have it doing is mining the the graphics card?

-Dave
you only need more RAM if your on winblows. their mapping SysRAM with GPURAM.

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BTC/DVC/TRC/FRC: 1K1773RbXRZVRQSSXe9N6N2MUFERvrdu6y ANC/XPM AK1773RTmRKtvbKBCrUu95UQg5iegrqyeA NMC: NK1773Rzv8b4ugmCgX789PbjewA9fL9Dy1 LTC: LKi773RBuPepQH8E6Zb1ponoCvgbU7hHmd EMC: EK1773RxUes1HX1YAGMZ1xVYBBRUCqfDoF BQC: bK1773R1APJz4yTgRkmdKQhjhiMyQpJgfN
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April 25, 2016, 02:38:25 AM
 #2711

Is there a way to lock/password protect the vanity generated priv key?
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April 25, 2016, 02:47:11 AM
 #2712

Is there a way to lock/password protect the vanity generated priv key?

 You can use the -e option and be prompted for a password before generation.
Alternatively you can use the -E option and specify the password pre-generation (probably not a good idea for security reasons)

edit: If you don't have keyconv you wont be able to decrypt the encrypted private key.  Get it here and put it in your vanitygen folder.
  Usage: keyconv encrypted_private_key <enter>
  You'll be prompted for the password.


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April 25, 2016, 02:47:41 AM
 #2713

Is there a way to lock/password protect the vanity generated priv key?

After you import it into a wallet like electum, you can set up the relevant BIP38 pass phrase or simple password from there

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April 25, 2016, 02:49:47 AM
 #2714

once, a priv key is shown though, its possible to import it anywhere. even if you have imported it to an encrypted wallet previously.


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April 25, 2016, 02:52:31 AM
 #2715

once, a priv key is shown though, its possible to import it anywhere. even if you have imported it to an encrypted wallet previously.



Thats why it is suggested to use the passwod option -e or instantly delete priv keys after importing.

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April 26, 2016, 04:21:21 AM
 #2716

Just a heads up...  I upgraded to AMD's 16.4.2 drivers and vanitygen no longer worked.  I had to downgrade in order to get it working again.

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April 26, 2016, 04:41:03 AM
 #2717

Just a heads up...  I upgraded to AMD's 16.4.2 drivers and vanitygen no longer worked.  I had to downgrade in order to get it working again.
i have those drivers and it works, just tested it.


Code:
C:\oclvanitygen>oclvanitygen64.exe -o done.txt -D 0:0 -D 0:1 1test
Difficulty: 264104224
Pattern: 1test
Address: 1testTeRt7D64QuUqHomV3aiXr2yYDSm1
Privkey: 5KXERMsfQ1AetjGpY5fdveEWAWHPevau8ePP7qf33xVRweSSwvh
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April 26, 2016, 04:50:27 AM
 #2718

Just a heads up...  I upgraded to AMD's 16.4.2 drivers and vanitygen no longer worked.  I had to downgrade in order to get it working again.
i have those drivers and it works, just tested it.


Code:
C:\oclvanitygen>oclvanitygen64.exe -o done.txt -D 0:0 -D 0:1 1test
Difficulty: 264104224
Pattern: 1test
Address: 1testTeRt7D64QuUqHomV3aiXr2yYDSm1
Privkey: 5KXERMsfQ1AetjGpY5fdveEWAWHPevau8ePP7qf33xVRweSSwvh

Interesting.  Mine would crash upon launching when trying to use the GPU (CPU worked fine still).  The GPU is a R9 390x.  I tried both 16.4.1 & 16.4.2.

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April 28, 2016, 12:17:57 AM
 #2719

Hard to make 7 Characters on address it takes several days.
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April 28, 2016, 12:44:45 AM
 #2720

Hard to make 7 Characters on address it takes several days.

 I just use the -i option and begin to get results in a few minutes or less.   With a bit of luck you can get a nice looking 7 letter prefix in an hour or so that way.
 

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