quizchain/29

Solved on 2019-04-12 after 12h 43m, key derived from the published recipe. 0.0077 BTC on Bitcoin.

Story

What the post asked, what the answer turned out to be, and what the chain says happened. The record below holds the data.

A whole chapter

"Second version." That's it. The update then prints a draft chapter, "exactly same as used for hashing".

The answer is that draft with voice changed to vOIce, the block 2 trick. With its line feeds and zff, that's 1,360 bytes. Good luck with the password list.

The funding sent 7.7 mBTC instead of 7. The author calls it a mistake that harmed no one.

IDquizchain/2929 / 772019-04-11 → 2019-04-12

Puzzle / quizchain

29

bitcoinp2pkh solved

Record

bitcoinPuzzle({
  address: p2pkh("1BQiU45feRw5…WRzTpa4P", "722d707c1fd7…436fa775"),
  status: Status.Solved,
  key: wif("Ky2NXmPfzm1t…b6WZKJRu").entropy("982301b80b30…69b0dd43", source("https://www.…lock_29/")).derived(),
})

Prize: 0.0077 BTC
Key material: wif, derived from the recipe
Verification: verified
Solved: 2019-04-12 · 12h 43m

tx 2

Trail: Explorerblockstream.info; Sourcereddit.com/r/bitcoinpuzzles/comments/bc6rkn/easy_7_mbtc_quizchain_block_29; Tryquizchain/29 in the playground

Address: 1BQiU45feRw5UKdCUbXuoNfuK5WRzTpa4P

hash160 722d707c1fd748e7bd58c31d1f120b99436fa775

Balance

asking the explorer

Key

public key · compressed: 03183d03300c902724c89e15fd95055984aacc49e01a5285ca7f26bb4b90104289
WIF: Ky2NXmPfzm1tZRoRWyEcFoY5Q63NZNZNt9HQQF7pHQJyb6WZKJRu
entropy hash: 982301b80b30af3a0abe110269b0dd43
entropy source: MD5 of the draft the post printed with voice changed to vOIce, a space and the last three characters of the block 28 key

Transactions

funding2019-04-110.0077 BTCb49ebc67d4…aa7d77
claim2019-04-120.00739491 BTC268840ab0b…69d750

Hints

undated
officialQuestion: Second version.
Sourcereddit.com/r/bitcoinpuzzles/comments/bc6rkn/easy_7_mbtc_quizchain_block_29
Published answer
Solution: just change the o and i in "voice" in the second sentence to "O" and "I", same method as in Block 2.
Sourcereddit.com/r/bitcoinpuzzles/comments/bc6rkn/easy_7_mbtc_quizchain_block_29
undated
officialFormat: [solution] [link] with exactly one space between them.
Sourcereddit.com/r/bitcoinpuzzles/comments/bc6rkn/easy_7_mbtc_quizchain_block_29
undated
officialUpdate: Copypaste from my draft, exactly same as used for hashing:
Sourcereddit.com/r/bitcoinpuzzles/comments/bc6rkn/easy_7_mbtc_quizchain_block_29