quizchain2/40

Solved on 2019-06-16 after 5h 38m, 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.

Famous mistake

June 16, 2019. The question: Famous mistake. One word in lower case, and a TOMI field of one word. Only one digit block, 5a9. Both parts are too easy for more.

A famous mistake in Bitcoin? There's only one.

hodl

The answer is hodl, and the TOMI field is hold. Solved at sight.

Then the race. Several players tried to claim at the same moment, and the author called it luck who got confirmed first. Somebody posted the answer before the claim confirmed, and u/puzzleponky said it got double spent. The claim that won confirmed at 13:52:40 UTC, under an hour after the post. It paid a full 1 mBTC in fees. Hodl, but pay the miner.

IDquizchain2/4040 / 772019-06-16

Puzzle / quizchain2

40

bitcoinp2pkh solved

Record

puzzle({
  chain: "bitcoin",
  address: "1NDV1sWQaE6N…tNLtxzXP",
  status: Status.Solved,
  key: wif("L41cFG1neExH…SKooWWYK").entropy("5a95ded197b6…26932480", source("https://www.…lock_40/")).derived(),
})

Prize: 0.007 BTC
Key material: wif, derived from the recipe
Verification: verified
Solved: 2019-06-16 · 5h 38m

tx 2

Trail: Explorerblockstream.info; Sourcereddit.com/r/Grycoin/comments/c19m8f/7_mbtc_quizchain2_block_40; Tryquizchain2/40 in the playground

Address: 1NDV1sWQaE6NzpvejaGHjoyg1ntNLtxzXP

hash160 e8b704cd3e5945fbb5d9cf9289d2f6281f98f0ba

Balance

asking the explorer

Key

public key · compressed: 03926cfee34d42cbf1ef2105e8b1af002476781ee60259648595c183c8fc4ba323
WIF: L41cFG1neExHf3EP74PttuQ3yeQEwtCfxUoqjYkcFXVxSKooWWYK
entropy hash: 5a95ded197b67a6a169fbbb326932480
entropy source: MD5 of the word, TOMI and a word

Transactions

funding2019-06-160.007 BTC28619e939e…6dcdb2
claim2019-06-160.006 BTC0ef17caeb3…8934fe

Files

Techniques

md5-to-bip39-entropypuzzlereddit.com/r/Grycoin/comments/c19m8f/7_mbtc_quizchain2_block_40

Hints

undated
officialQuestion: Famous mistake.
Sourcereddit.com/r/Grycoin/comments/c19m8f/7_mbtc_quizchain2_block_40
Published answer
Solultion was hodl, TOMI field was hold.
Sourcereddit.com/r/Grycoin/comments/c19m8f/7_mbtc_quizchain2_block_40
undated
officialFormat: [solution] TOMI [TOMI]
Sourcereddit.com/r/Grycoin/comments/c19m8f/7_mbtc_quizchain2_block_40
undated
officialSolution format is one word, all in lower case like "word".
Sourcereddit.com/r/Grycoin/comments/c19m8f/7_mbtc_quizchain2_block_40
undated
officialTOMI field is the same as solution format, one word all in lower case, like "word".
Sourcereddit.com/r/Grycoin/comments/c19m8f/7_mbtc_quizchain2_block_40
undated
officialFIrst three digits of MD5 hash are 5a9.
Sourcereddit.com/r/Grycoin/comments/c19m8f/7_mbtc_quizchain2_block_40