Bitcoin address hashing? | Bitcointalksearch.org

Abdussamad

legendary

Activity: 3682

Merit: 1580

Quote from: bob123 on October 21, 2018, 05:29:22 AM

Quote from: Abdussamad on October 20, 2018, 10:03:34 PM

give them the address and let them figure it out. if they can't then they won't be able to recover your wallet either.

That's nonsense. Noone will be able to 'recover' (or better: crack) a wallet with knowing only the address.
This is the whole sense of such a big keyspace..

Who said anything about recovering the private keys from the address? OP makes no mention of any such thing and neither do I. He says he's being asked for the hash of the address. Sounds like they want the hash160 which they can recover from the address itself.

Sometimes when you are trying to bruteforce a wallet you want public keys, addresses or extended public keys relevant to the user. This way you have something to check against. This is my best guess as to why they would want the hash160 of the public key.

bob123

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Quote from: CryptoSpook on October 20, 2018, 11:19:17 AM

Does anyone know how to get the complete hash of a regular bitcoin address? Trying to recover my old old wallet and the recovery service needs the hash.

What are you referring to with 'hash' ? The address itself is a hash of the public key (It is the RIPEMD-160 hash of the SHA256 hash of the public key).

Also, which recovery service is it ? And what exactly are they going to do ? Simply bruteforcing a private key wouldn't make sense.

I am with AdolfinWolf here. The link to the service and the original 'instructions' could be very helpful for us to understand what you mean.

Quote from: Abdussamad on October 20, 2018, 10:03:34 PM

give them the address and let them figure it out. if they can't then they won't be able to recover your wallet either.

That's nonsense. Noone will be able to 'recover' (or better: crack) a wallet with knowing only the address.
This is the whole sense of such a big keyspace..

Abdussamad

legendary

Activity: 3682

Merit: 1580

Quote from: CryptoSpook on October 20, 2018, 11:19:17 AM

Does anyone know how to get the complete hash of a regular bitcoin address? Trying to recover my old old wallet and the recovery service needs the hash.

give them the address and let them figure it out. if they can't then they won't be able to recover your wallet either.

AdolfinWolf

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Activity: 1946

Merit: 1427

Don't be so quick about that! I might be misunderstanding your question.

Could you link me the recovery service you're talking about, and their "instructions".

Also, what data do you still have? What wallet did you use to store the 1.5 million on?
Is the only thing that you have left your bitcoin adress?

CryptoSpook

newbie

Activity: 2

Merit: 0

Quote from: AdolfinWolf on October 20, 2018, 12:29:39 PM

Quote from: CryptoSpook on October 20, 2018, 11:19:17 AM

Does anyone know how to get the complete hash of a regular bitcoin address? Trying to recover my old old wallet and the recovery service needs the hash.

Almost all of the functions used to generate a bitcoin adress are a "one-way function". Otherwise, one could possibly reverse it and generate a private key out of it and thus steal your funds.

I don't really see what you're looking for here. I think the furthest you can go is to the binary adress of a bitcoin adress.

Which means that you know the RIPEMD-160 hash + the added 4 SHA-256 hashed bytes used as checksum?

See; https://en.bitcoin.it/wiki/Technical_background_of_version_1_Bitcoin_addresses

The example given by the wiki;

Quote

Code:

1PMycacnJaSqwwJqjawXBErnLsZ7RkXUAs

in http://lenschulwitz.com/base58

Gives;

Code:

00F54A5851E9372B87810A8E60CDD2E7CFD80B6E31C7F18FE8

Which

Code:

00f54a5851e9372b87810a8e60cdd2e7cfd80b6e31

is the final RIPEMD-160 hash.

And

Code:

c7f18fe8

the SHA-256 checksum.

I doubt you can go any further than this...?

Daaaaaaaaaaamn. Looks like I'm out 1.5 million dollars. Thank you.

AdolfinWolf

legendary

Activity: 1946

Merit: 1427

Quote from: CryptoSpook on October 20, 2018, 11:19:17 AM

Does anyone know how to get the complete hash of a regular bitcoin address? Trying to recover my old old wallet and the recovery service needs the hash.

Almost all of the functions used to generate a bitcoin adress are a "one-way function". Otherwise, one could possibly reverse it and generate a public -> private key out of it and thus steal your funds.

I don't really see what you're looking for here. I think the furthest you can go is to the binary adress of a bitcoin adress.

Which means that you know the RIPEMD-160 hash + the added 4 SHA-256 hashed bytes used as checksum?

See; https://en.bitcoin.it/wiki/Technical_background_of_version_1_Bitcoin_addresses

The example given by the wiki;

Quote

Code:

1PMycacnJaSqwwJqjawXBErnLsZ7RkXUAs

in http://lenschulwitz.com/base58

Gives;

Code:

00F54A5851E9372B87810A8E60CDD2E7CFD80B6E31C7F18FE8

Which

Code:

00f54a5851e9372b87810a8e60cdd2e7cfd80b6e31

is the final RIPEMD-160 hash.

And

Code:

c7f18fe8

the SHA-256 checksum.

I doubt you can go any further than this...?

CryptoSpook

newbie

Activity: 2

Merit: 0

Does anyone know how to get the complete hash of a regular bitcoin address? Trying to recover my old old wallet and the recovery service needs the hash.

Topic: Bitcoin address hashing? (Read 208 times)