quizchain2/43

Solved on 2019-06-18 after 44m, 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.

Two words

June 18, 2019, the same day as block 42. A Twitter poll picked the hint speed this time: one every 30 minutes. The question is Two words. Both in lower case. The TOMI field has three items. Digits e46, a and 0c.

The one hint says the author thought about reusing block 43 of the first run. And rejected it.

The last mnemonic

The answer comes from the previous block. Take the twelve words of the block 42 mnemonic, read the fourth, then the third. rather between. The TOMI field is block 42 mnemonic.

u/Arpox found the TOMI field first. Then a script tried all 144 word pairs against the hash digits. Instant. The claim confirmed at 23:21:34 UTC, 22 minutes after the post. The hint wasn't needed.

The author started doubting the partial hashes after that. u/Crypto_Rachel begged to keep them. Can you blame them?

IDquizchain2/4343 / 772019-06-18

Puzzle / quizchain2

43

bitcoinp2pkh solved

Record

puzzle({
  chain: "bitcoin",
  address: "169KvQtcBKhe…23ZZvyZ5",
  status: Status.Solved,
  key: wif("Kxzj9HFrK6jb…2sj7VGnC").entropy("e465846b8dc5…fe8ef7e1", source("https://www.…lock_43/")).derived(),
})

Prize: 0.007 BTC
Key material: wif, derived from the recipe
Verification: verified
Solved: 2019-06-18 · 44m

tx 2

Trail: Explorerblockstream.info; Sourcereddit.com/r/Grycoin/comments/c297as/7_mbtc_quizchain2_block_43; Tryquizchain2/43 in the playground

Address: 169KvQtcBKheFbTooCqo1tHBGr23ZZvyZ5

hash160 386bc0404562d3eb8ab6c317228b3a3a48c91e52

Balance

asking the explorer

Key

public key · compressed: 02757deb5f3a1a128e42696b030a0a660d394b009f6327fd1f23b4bc8e8f33a8fc
WIF: Kxzj9HFrK6jb9e4wLGBUMiSxwG5WB82QiKqygA8rxusE2sj7VGnC
entropy hash: e465846b8dc5e4789b972356fe8ef7e1
entropy source: MD5 of the two words, TOMI and three words

Transactions

funding2019-06-180.007 BTC6a79d13f7b…1325b7
claim2019-06-180.0069322 BTC5e1f08c971…0cc903

Files

Techniques

md5-to-bip39-entropypuzzlereddit.com/r/Grycoin/comments/c297as/7_mbtc_quizchain2_block_43

Hints

undated
officialQuestion: Two words.
Sourcereddit.com/r/Grycoin/comments/c297as/7_mbtc_quizchain2_block_43
Published answer
That results in "rather between" as the solution and "block 42 mnemonic" as the TOMI field.
Sourcereddit.com/r/Grycoin/comments/c297as/7_mbtc_quizchain2_block_43
undated
officialFormat: [solution] TOMI [TOMI]
Sourcereddit.com/r/Grycoin/comments/c297as/7_mbtc_quizchain2_block_43
Published answer
Solution : rather between TOMI block 42 mnemonic
Sourcereddit.com/r/Grycoin/comments/c297as/comment/erikvui
undated
officialSolution format is [word1] [word2] with both in all lower case.
Sourcereddit.com/r/Grycoin/comments/c297as/7_mbtc_quizchain2_block_43
undated
officialTOMI field is three items.
Sourcereddit.com/r/Grycoin/comments/c297as/7_mbtc_quizchain2_block_43
undated
officialFirst three digits of MD5 hash are e46.
Sourcereddit.com/r/Grycoin/comments/c297as/7_mbtc_quizchain2_block_43
undated
officialFirst digit of solution only MD5 hash is a.
Sourcereddit.com/r/Grycoin/comments/c297as/7_mbtc_quizchain2_block_43
undated
officialFirst two digits of TOMI field only MD5 hash are 0c.
Sourcereddit.com/r/Grycoin/comments/c297as/7_mbtc_quizchain2_block_43
undated
officialHint 1: My first idea was to use block 43 of the first run, but I rejected that one.
Sourcereddit.com/r/Grycoin/comments/c297as/7_mbtc_quizchain2_block_43