quizchain/11

Solved on 2019-04-09 after 40m, key published. 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 question is the answer

"Can you find the solution with absolutely no hint whatsoever?" The post calls it expert level and warns it's extremely difficult. The author even plans to hand the key to a random commenter, since nobody will get close.

Someone got close in 41 minutes. The answer is the question itself, copied as posted, with peH from the block 10 key glued to the question mark. SHA-256, entropy, m/44'/0'/0'/0/0, same as always. The update admits it was "pretty easy" and gives the string away, spelling whatsoever as "whatsover". The funded hash spells it right, so don't copy the update.

Two days later a player dropped this key into a comment under block 21. That's where the WIF on the record comes from.

IDquizchain/1111 / 772019-04-09

Puzzle / quizchain

11

bitcoinp2pkh solved

Record

bitcoinPuzzle({
  address: p2pkh("1156YWRc9MYT…6QyRtmvJ", "00c64a85abee…d76cd372"),
  status: Status.Solved,
  key: wif("L3qP93VXiHtT…BNALJgFm").entropy("4fd06cd31185…61f5e6ac", source("https://www.…lock_11/")),
})

Prize: 0.007 BTC
Key material: wif
Verification: verified
Solved: 2019-04-09 · 40m

tx 2

Trail: Explorerblockstream.info; Sourcereddit.com/r/bitcoinpuzzles/comments/bb2vwf/expert_7_mbtc_quizchain_block_11; Tryquizchain/11 in the playground

Address: 1156YWRc9MYTEcZBkz91FyjNdN6QyRtmvJ

hash160 00c64a85abeebf648e4538b5c9148566d76cd372

Balance

asking the explorer

Key

public key · compressed: 029de3b565c4ebc174a83688208e8afede2ea5f40bd57896d727c9742147c0a19e
WIF: L3qP93VXiHtTzwpUCv6BNKApBnneg1LjajeenEND2Cx5BNALJgFm
entropy hash: 4fd06cd3118515483504684b9fadbdb2aa65c79501dd8d6c396efe5961f5e6ac
entropy source: SHA-256 of the question as posted with the last three characters of the block 10 key appended

Transactions

funding2019-04-090.007 BTC71970cfaeb…48b9b4
claim2019-04-090.0069 BTC7f94a37263…68eba5

Hints

undated
officialCan you find the solution with absolutely no hint whatsoever?
Sourcereddit.com/r/bitcoinpuzzles/comments/bb2vwf/expert_7_mbtc_quizchain_block_11
Published answer
Just take the question as it was and add the previous block private key digits, which results in "Can you find the solution with absolutely no hint whatsover?peH" as the string to hash.
Sourcereddit.com/r/bitcoinpuzzles/comments/bb2vwf/expert_7_mbtc_quizchain_block_11
undated
officialAnd the last three digits of the private key for the previous block (not yet solved) are peH.
Sourcereddit.com/r/bitcoinpuzzles/comments/bb2vwf/expert_7_mbtc_quizchain_block_11