Huh, so someone made a bunch of puzzle's that if you crack the key you get the money? Interesting.
Who else thinks this might be a zero-day hunt or something?
Archive: https://archive.today/YMY4v
From the post:
>Discussion thread here: https://bitcointalk.org/index.php?topic=1306983.msg64526037#...
Bitcoin puzzles are private keys with just a few unknown bits so that anyone can bruteforce them to collect a reward. Puzzle 66 contained 66 unknown bits and had 6.6 BTC deposited into it by the initial puzzle creator. The private key was 0x000000000000000000000000000000000000000000000002832ed74f2b5e35ee or 256 bits with mostly zeroes but 66 random ones.
The next Bitcoin puzzle, #67, has 67 unknown bits, and contains 6.7 BTC up for grabs: https://www.blockchain.com/explorer/addresses/btc/1BY8GQbnue...
The previous puzzle by order of difficulty was #64 (not #65, because see below) and was solved on 9/9/2022, so about 2 years ago. In other words, it took about 2 years of compute time to run the 266 bruteforcing task.
Puzzles that are multiple of 5 (#65 or #70) are special: they have twice more entropy. So that private key #65 doesn't have 65-bit of entropy but 130-bit of entropy. And the creator of the puzzle intentionally published their public key on the blockchain. When you know the public key, brutetforcing the n-bit private key only requires 2n/2 work. So puzzle #65 with a 130-bit key actually require bruteforcing up to only 265 keys.
Huh, so someone made a bunch of puzzle's that if you crack the key you get the money? Interesting.
Who else thinks this might be a zero-day hunt or something?
Archive: https://archive.today/YMY4v
From the post:
>>Discussion thread here: https://bitcointalk.org/index.php?topic=1306983.msg64526037#...
Bitcoin puzzles are private keys with just a few unknown bits so that anyone can bruteforce them to collect a reward. Puzzle 66 contained 66 unknown bits and had 6.6 BTC deposited into it by the initial puzzle creator. The private key was 0x000000000000000000000000000000000000000000000002832ed74f2b5e35ee or 256 bits with mostly zeroes but 66 random ones.
The next Bitcoin puzzle, #67, has 67 unknown bits, and contains 6.7 BTC up for grabs: https://www.blockchain.com/explorer/addresses/btc/1BY8GQbnue...
The previous puzzle by order of difficulty was #64 (not #65, because see below) and was solved on 9/9/2022, so about 2 years ago. In other words, it took about 2 years of compute time to run the 2^66 bruteforcing task.
Puzzles that are multiple of 5 (#65 or #70) are special: they have twice more entropy. So that private key #65 doesn't have 65-bit of entropy but 130-bit of entropy. And the creator of the puzzle intentionally published their public key on the blockchain. When you know the public key, brutetforcing the n-bit private key only requires 2^(n/2) work. So puzzle #65 with a 130-bit key actually require bruteforcing up to only 2^65 keys.
