quizchain/77

Solved on 2019-07-15 after 2mo 17d 1h 15m, key derived from the published recipe. 0.077 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.

The genesis address

77 mBTC, the final block of the first run, funded on April 29 and posted on May 3. "The solution is the puzzle."

The puzzle is the genesis address, which the author credits to Satoshi. The answer is eight items: four read from the address's left half, four from its right half backwards. Then TOMI Omit TOMI, because the author hashed a capital O by mistake, and the whole block 44 key.

It took ten hints and two and a half months. On July 15, 2019 a player posted 1A1 efi2DM Hal Finney TS mN ihsotaS otomakaN, and the author confirmed it. The claim had confirmed four minutes earlier.

Is that really a message from Satoshi about Hal Finney? The author doesn't know either, and says so.

IDquizchain/7777 / 772019-04-29 → 2019-07-15

Puzzle / quizchain

77

bitcoinp2pkh solved

Record

bitcoinPuzzle({
  address: p2pkh("1FAAKpzFc2CG…XZckRsMP", "9b4d49d5f8b3…eaa20b92"),
  status: Status.Solved,
  key: wif("KzWuYrzjrYJX…t5quvNGk").entropy("684b250ea52c…ed0e62e6", source("https://www.…ettfzcx/")).derived(),
})

Prize: 0.077 BTC
Key material: wif, derived from the recipe
Verification: verified
Solved: 2019-07-15 · 2mo 17d 1h 15m

tx 2

Trail: Explorerblockstream.info; Sourcereddit.com/r/bitcoinpuzzles/comments/bkeggn/77_mbtc_quizchain_block_77; Tryquizchain/77 in the playground

Address: 1FAAKpzFc2CGU6Yt51kAZv5f6dXZckRsMP

hash160 9b4d49d5f8b33a08ebe2d848ed0e4b05eaa20b92

Balance

asking the explorer

Key

public key · compressed: 022dc47f1d1d04a171fb4a6a9f2b43ebc13cf5a6b77b195153f8863d4657c580fd
WIF: KzWuYrzjrYJXdRMA6SukNnuRUkFRycUq8WdfUgfkQ5k1t5quvNGk
entropy hash: 684b250ea52c1e33a6f6143ded0e62e6
entropy source: MD5 of the eight items a player posted and the author confirmed, TOMI, Omit TOMI and the whole block 44 key

Transactions

funding2019-04-290.077 BTCbf2213192c…17ca16
claim2019-07-150.07685965 BTCb0a2454535…e71290

Hints

undated
officialQuestion: The solution is the puzzle.
Sourcereddit.com/r/bitcoinpuzzles/comments/bkeggn/77_mbtc_quizchain_block_77
Published answer
1A1 efi2DM Hal Finney TS mN ihsotaS otomakaN
Sourcereddit.com/r/bitcoinpuzzles/comments/bkeggn/comment/ettcfmb
undated
officialUpdate: Use [solution] TOMI Omit TOMI [link], since that is what I hashed with in yet another mistake.
Sourcereddit.com/r/bitcoinpuzzles/comments/bkeggn/77_mbtc_quizchain_block_77
undated
officialLink is full private key from unsolved block 44 (Du Hast), with L4VdZUD as first seven digits.
Sourcereddit.com/r/bitcoinpuzzles/comments/bkeggn/77_mbtc_quizchain_block_77
undated
officialSolution format is eight items in two sets of four. Two items ciphertext and two items plaintext each, 44 read from left and 44 read from right.
Sourcereddit.com/r/bitcoinpuzzles/comments/bkeggn/77_mbtc_quizchain_block_77
undated
officialUpdate: The solution written by Satoshi was that of block 46, the Bitcoin address of the Genesis block, reproduced for convenience here: 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
Sourcereddit.com/r/bitcoinpuzzles/comments/bkeggn/77_mbtc_quizchain_block_77