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Topic: Bitcoin Vanity Addresses! - page 14. (Read 18160 times)

hero member
Activity: 826
Merit: 1000
November 26, 2015, 05:11:05 AM
#75
copper member
Activity: 1498
Merit: 1528
No I dont escrow anymore.
November 26, 2015, 04:14:08 AM
#74
Is this vanity address generator safe? I heard before the service like this make your private key held by third party which can take your coin anytime.
Correct me if i am wrong.

Good question. Its safe because I never have your final private key.
You generate your private key and send me the public key.
I generate a partial private key where the combined public keys result in your vanity address.
You combine both private keys into a new private key only you know to get the finished vanity address. Due to the way private and public keys work this is safe as long as bitcoin itself is safe.
Knowing the partial private key gives me no advantage when trying to find the exact private key for your address. Well, almost no advantage. Instead of checking 2256 possible private keys I only have to check (2256)-1 private keys. So I have a few fractions of a picosecond advantage on a race that lasts till the sun burns out.





can u prove that u say?
Can u proof that your server doesn't store final private keys?

As the private key is not generated on my machine I can "prove" that I dont store it, yes. The private key I have has a different address, only in combination with your part will it result in the address requested.

I cant prove the underlying mathematics of combined private keys for eliptic curves, no. My math is not good enough for that, its just good enough to understand why its secure. If you are interested I suggest you read this[1] post. It has some minor mistakes regarding the way the addition works for eliptic curves as was pointed out here[2] which links this[3] document (pg. 12) as source. For a simple, but correct introduction to eliptic curves in general I suggest this[4] presentation by djb. He and Tanja Lange explain it with clocks which is IMHO a very good way to understand the fundamental concept. To transfer this here. Both keys combined spin around the clock and end up in a spot I can not predict from only my part.

[1] https://bitcointalksearch.org/topic/m.901491
[2] http://bitcoin.stackexchange.com/questions/3853/can-one-safely-buy-vanity-addresses-from-a-third-party-without-risking-ones-coi
[3] http://cs.ucsb.edu/~koc/ccs130h/notes/ecdsa-cert.pdf
[4] its english dont get fooled by the domain https://media.ccc.de/v/31c3_-_6369_-_en_-_saal_1_-_201412272145_-_ecchacks_-_djb_-_tanja_lange#video
sr. member
Activity: 392
Merit: 250
November 26, 2015, 04:00:13 AM
#73
Is this vanity address generator safe? I heard before the service like this make your private key held by third party which can take your coin anytime.
Correct me if i am wrong.

Good question. Its safe because I never have your final private key.
You generate your private key and send me the public key.
I generate a partial private key where the combined public keys result in your vanity address.
You combine both private keys into a new private key only you know to get the finished vanity address. Due to the way private and public keys work this is safe as long as bitcoin itself is safe.
Knowing the partial private key gives me no advantage when trying to find the exact private key for your address. Well, almost no advantage. Instead of checking 2256 possible private keys I only have to check (2256)-1 private keys. So I have a few fractions of a picosecond advantage on a race that lasts till the sun burns out.





can u prove that u say?
Can u proof that your server doesn't store final private keys?
legendary
Activity: 1582
Merit: 1006
beware of your keys.
November 26, 2015, 03:54:27 AM
#72
i guess you wanna know what that word is.
wanna know it? Grin

Lets stay safe for work here. Smiley Anyone that wants to know more can ask wiki.
no problem. Grin
copper member
Activity: 1498
Merit: 1528
No I dont escrow anymore.
November 26, 2015, 03:51:37 AM
#71
i guess you wanna know what that word is.
wanna know it? Grin

Lets stay safe for work here. Smiley Anyone that wants to know more can ask wiki.
legendary
Activity: 1582
Merit: 1006
beware of your keys.
November 26, 2015, 03:48:47 AM
#70
i guess you wanna know what that word is.
wanna know it? Grin
copper member
Activity: 1498
Merit: 1528
No I dont escrow anymore.
November 26, 2015, 03:43:50 AM
#69
Is this vanity address generator safe? I heard before the service like this make your private key held by third party which can take your coin anytime.
Correct me if i am wrong.

Good question. Its safe because I never have your final private key.
You generate your private key and send me the public key.
I generate a partial private key where the combined public keys result in your vanity address.
You combine both private keys into a new private key only you know to get the finished vanity address. Due to the way private and public keys work this is safe as long as bitcoin itself is safe.
Knowing the partial private key gives me no advantage when trying to find the exact private key for your address. Well, almost no advantage. Instead of checking 2256 possible private keys I only have to check (2256)-1 private keys. So I have a few fractions of a picosecond advantage on a race that lasts till the sun burns out.



Hi, I would like 1TrigX and 1Marco

Public Key for 1TrigX (exact case)

04F0F2A345602B2709743F2439925BCFCD4094E99F86817DC5737B1C019EEE27B090EC804FD5FD9 6C9BEA996E61192558F85A61DEFDDCE18DF287F0580C2409AE5

Public Key for 1Marco (exact case)

041CE62DD3317C85D5D7697E6DE0FBCC79E8CECF8066C99F8F76DFE05FCE1A1898DA8F179AEB495 DDF74AD77EA9B46D255543CC91BC3A0B4BAAD1366B91D031CBF

Please send me the address for payment!

As discussed via PM please send 0.0002 to 1vanityybUbbYsiJjAGiNK7vdJkNCqm2e I will start as soon as Im back home.
copper member
Activity: 2996
Merit: 2374
November 26, 2015, 03:39:01 AM
#68
Correct me if i am wrong.
The OP will only have access to 1/2 of the private key, and as a result will not be able to steal any BTC that you store in any vanity address generated by the OP.

If you bothered to read the instructions in the 1st post then you would see that you 1st create a keypair, give the OP the public key, then combine the private key given to you by the OP with the private key associated with the public key you previously gave the OP to calculate the private key of your vanity address. You should notice that at no point does the OP ever have the entire private key to your address.
hero member
Activity: 826
Merit: 1000
November 26, 2015, 03:35:35 AM
#67
Hi, I would like 1TrigX and 1Marco

Public Key for 1TrigX (exact case)

04F0F2A345602B2709743F2439925BCFCD4094E99F86817DC5737B1C019EEE27B090EC804FD5FD9 6C9BEA996E61192558F85A61DEFDDCE18DF287F0580C2409AE5

Public Key for 1Marco (exact case)

041CE62DD3317C85D5D7697E6DE0FBCC79E8CECF8066C99F8F76DFE05FCE1A1898DA8F179AEB495 DDF74AD77EA9B46D255543CC91BC3A0B4BAAD1366B91D031CBF

Please send me the address for payment!
legendary
Activity: 1442
Merit: 1008
November 26, 2015, 03:27:48 AM
#66
Is this vanity address generator safe? I heard before the service like this make your private key held by third party which can take your coin anytime.
Correct me if i am wrong.
copper member
Activity: 1498
Merit: 1528
No I dont escrow anymore.
November 26, 2015, 12:55:52 AM
#65
thanks shorena Cheesy

Code:
-----BEGIN BITCOIN SIGNED MESSAGE-----
I just Confirm that i received a vanity address with my username :D
-----BEGIN SIGNATURE-----
1Kusuma6jR9zZocpTvkH6FEezwwnJXDf3D
GzxTcB4/EKQtp27PCQpdS0DMvOzYMWJyVv16BsPXJgsMGat5U0VNZiX6A9S1mKolR9l8Qz8Ky3vTTl3wdU+tDak=
-----END BITCOIN SIGNED MESSAGE-----

Smiley

How much would 1TriggerX cost for case sensitive and non case sensitive?

1TriggerX w/o case would cost you 0.2337 BTC (takes a few weeks depending on luck) - diff: 23,349,487,483,220
1TriggerX with exact case would take a few years. The estimated price would be 72.5166 BTC, but its not something I would want to do - diff: 2,988,734,397,852,220

1Trigger w/o case would cost you 0.0084 BTC

Edit: To explain why its different from 1abcdefgh: 1T or 1t at the beginning is more difficult than 1[a,A] or even 1[k,K], the "i" has no upper case symbol in base58 so its essentially with case which does the rest. I added an example for that case. "q" seems to be the letter where it starts.
hero member
Activity: 826
Merit: 517
November 26, 2015, 12:41:14 AM
#64
thanks shorena Cheesy

Code:
-----BEGIN BITCOIN SIGNED MESSAGE-----
I just Confirm that i received a vanity address with my username :D
-----BEGIN SIGNATURE-----
1Kusuma6jR9zZocpTvkH6FEezwwnJXDf3D
GzxTcB4/EKQtp27PCQpdS0DMvOzYMWJyVv16BsPXJgsMGat5U0VNZiX6A9S1mKolR9l8Qz8Ky3vTTl3wdU+tDak=
-----END BITCOIN SIGNED MESSAGE-----
hero member
Activity: 826
Merit: 1000
November 26, 2015, 12:37:52 AM
#63
How much would 1TriggerX cost for case sensitive and non case sensitive?
copper member
Activity: 1498
Merit: 1528
No I dont escrow anymore.
November 26, 2015, 12:25:58 AM
#62
How much would 1bitbaby cost, case insensitive?

I had couple of made before to use in the forum but I lost their private keys but thankfully they didn't have any funds in them.

1bitbaby w/o case would cost you 0.00035 BTC if thats acceptable send the amount to 1vanityybUbbYsiJjAGiNK7vdJkNCqm2e and me a public key.
hero member
Activity: 812
Merit: 1000
November 25, 2015, 10:57:33 PM
#61
How much would 1bitbaby cost, case insensitive?

I had couple of made before to use in the forum but I lost their private keys but thankfully they didn't have any funds in them.
copper member
Activity: 1498
Merit: 1528
No I dont escrow anymore.
November 25, 2015, 04:41:09 PM
#60
Do you have the ability to have vanitygen continue checking for addresses until multiple have been found of either the same criteria or of different criteria?

For example can you tell it to continue looking until it has found 3x of 1abcdefgh and/or to continue looking until it has found 1abcdefgh, 1ijklmnop and 1qrstuv?

Only for the same pubkey or without providing a pubkey and I cant limit it to a certain number or strike off results. There are basically two flags that help, but are not as flexible as one would hope.

#1 is -k it ensures vanitygen keeps going after finding a key. It does not stop a certain number though, it has to be cancled manually.

#2 is -f pattern.txt it allows you to store any amount of prefixes in a file and it will search for all of them at once. If it finds any it will stop (or not with -k). It will keep finding easier (low diff) results though and not strike them off the list.

E.g. this is the file I made for referee

Code:
1Referee
1referee
1R3feree
1r3feree
1Ref3ree
1ref3ree
1Refer3e
1refer3e
1Refere3
1refere3
1R3f3ree
1r3f3ree
1R3fer3e
1r3fer3e
1R3fere3
1r3fere3
1R3f3r3e
1r3f3r3e
1R3f3re3
1r3f3re3

There is also -r which allows to search for regular expressions (e.g. the above would be 1[R,r][e,3]f[e,3]r[e,3]{2}). Thats however not working with the GPU.
copper member
Activity: 2996
Merit: 2374
November 25, 2015, 04:32:48 PM
#59
Do you have the ability to have vanitygen continue checking for addresses until multiple have been found of either the same criteria or of different criteria?

For example can you tell it to continue looking until it has found 3x of 1abcdefgh and/or to continue looking until it has found 1abcdefgh, 1ijklmnop and 1qrstuv?
copper member
Activity: 1498
Merit: 1528
No I dont escrow anymore.
November 25, 2015, 04:27:39 PM
#58
-snip-
Done here the tx id : https://blockchain.info/tx/91edbfe8e1cf0914665e35bde74fa97b668c9d22fa2aee9f4113da7ff60050dd

And here for the public key : 04D1F49A1E84500E3C75A8B4AB127E27FFA687BFAFAB0B7CB17FD2BD71400405FBAA1D07AD756D4 7A77DF6C9081A5D6C23276E4354A0158881AD1C40A7499BD2AF


The address for lottery248 was not found in the last 8 hours. I have put you on top of the queue for now because yours should be quick. I also need the machine to not be sluggish for a bit. Will restart lottery248's address over night.
yo mate, 5:18 am here, just looking at what is the things avaliable around here.

2224 here. Vanitygen ran for ~8 hours during the day, but I had no luck yet. Just restarted it and will check back tomorrow morning. Sometimes its bad luck and takes longer. Of course this will not change the price, I am aware of the risks involved. It just means it takes a little longer. I will also not give longer calculations (>30 minutes) priority over yours.
legendary
Activity: 1582
Merit: 1006
beware of your keys.
November 25, 2015, 04:18:15 PM
#57
-snip-
Done here the tx id : https://blockchain.info/tx/91edbfe8e1cf0914665e35bde74fa97b668c9d22fa2aee9f4113da7ff60050dd

And here for the public key : 04D1F49A1E84500E3C75A8B4AB127E27FFA687BFAFAB0B7CB17FD2BD71400405FBAA1D07AD756D4 7A77DF6C9081A5D6C23276E4354A0158881AD1C40A7499BD2AF


The address for lottery248 was not found in the last 8 hours. I have put you on top of the queue for now because yours should be quick. I also need the machine to not be sluggish for a bit. Will restart lottery248's address over night.
yo mate, 5:18 am here, just looking at what is the things avaliable around here.
copper member
Activity: 1498
Merit: 1528
No I dont escrow anymore.
November 25, 2015, 03:13:33 PM
#56
-snip-
Done here the tx id : https://blockchain.info/tx/91edbfe8e1cf0914665e35bde74fa97b668c9d22fa2aee9f4113da7ff60050dd

And here for the public key : 04D1F49A1E84500E3C75A8B4AB127E27FFA687BFAFAB0B7CB17FD2BD71400405FBAA1D07AD756D4 7A77DF6C9081A5D6C23276E4354A0158881AD1C40A7499BD2AF


The address for lottery248 was not found in the last 8 hours. I have put you on top of the queue for now because yours should be quick. I also need the machine to not be sluggish for a bit. Will restart lottery248's address over night.
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