quizchain/30

Solved on 2019-04-14 after 1d 16h 8m, key derived from the published recipe. 0.007 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 first BotFU

After block 27 the author wanted bots to pay. So the format grew a field: the answer, BotFU, a short decisive hint, then the link.

The question was 4231. It took the Sphinx riddle, a nod to block 1 and a pile of hints to get to Humanity First BotFU Sphinx Yang JRu. Forty hours. The author even misprinted the first hash digits, and the winner spotted it.

The verdict in the update: way too much complexity for humans. The field stays, but only where a short answer needs it.

IDquizchain/3030 / 772019-04-12 → 2019-04-14

Puzzle / quizchain

30

bitcoinp2pkh solved

Record

bitcoinPuzzle({
  address: p2pkh("1AuvqSGzUigk…1L2Jv2ZB", "6cbbb38b5c49…8349b724"),
  status: Status.Solved,
  key: wif("L3eCrvouiccM…xmA1DfTS").entropy("8056c0a3eb19…a494ab0d", source("https://www.…ekuicyf/")).derived(),
})

Prize: 0.007 BTC
Key material: wif, derived from the recipe
Verification: verified
Solved: 2019-04-14 · 1d 16h 8m

tx 2

Trail: Explorerblockstream.info; Sourcereddit.com/r/bitcoinpuzzles/comments/bcbxb2/hard_7_mbtc_quizchain_block_30; Tryquizchain/30 in the playground

Address: 1AuvqSGzUigkswAunNNiBFYVZh1L2Jv2ZB

hash160 6cbbb38b5c49657bad3161ffb1fec6df8349b724

Balance

asking the explorer

Key

public key · compressed: 026e8c8947914334aa286be25354d34111b2ccd7d2581fa7ef812233e6f324cf40
WIF: L3eCrvouiccM1cvmb52sZV5VtY8P5kGUkxjARjJspX1exmA1DfTS
entropy hash: 8056c0a3eb19a5ef52ed6280a494ab0d
entropy source: MD5 of the answer string the author printed, the full hash of which a comment of the author gives

Transactions

funding2019-04-120.007 BTCcb3dd31d6d…23395f
claim2019-04-140.00673638 BTC28c6135326…3f682f

Hints

undated
officialQuestion: 4231
Sourcereddit.com/r/bitcoinpuzzles/comments/bcbxb2/hard_7_mbtc_quizchain_block_30
Published answer
BFUB is "Sphinx Yang", for a complete answer string of "Humanity First BotFU Sphinx Yang JRu"
Sourcereddit.com/r/bitcoinpuzzles/comments/bcbxb2/hard_7_mbtc_quizchain_block_30
undated
officialFormat: [solution] BotFU [BotFU] [link], see example above. Hint: BotFU for this is two words, both starting with capital letters.
Sourcereddit.com/r/bitcoinpuzzles/comments/bcbxb2/hard_7_mbtc_quizchain_block_30
undated
official4231 is to be divided in 423 for the first word (and BFUB hint) and 1 for the second word and BFUB hint.
Sourcereddit.com/r/bitcoinpuzzles/comments/bcbxb2/hard_7_mbtc_quizchain_block_30
undated
officialFIrst word of BFUB is Sphinx.
Sourcereddit.com/r/bitcoinpuzzles/comments/bcbxb2/hard_7_mbtc_quizchain_block_30