quizchain/8

Solved on 2019-04-08 after 3h 45m, key derived from the published recipe. 0.007 BTC on Bitcoin.

IDquizchain/808 / 102019-04-08

Puzzle / quizchain

8

bitcoinp2pkh solved

Record

bitcoinPuzzle({
  address: p2pkh("1AKjCXbC3evW…okPZT7Jv", "6643d858f518…830e32e8"),
  status: Status.Solved,
  key: wif("KwwbEXjw3E9H…GwcwTHwX").entropy("cc0444e284fe…2dfd6677", source("https://www.…block_8/")).derived(),
})

Prize: 0.007 BTC
Key material: wif, derived from the recipe
Verification: verified
Solved: 2019-04-08 · 3h 45m

tx 2

Trail: Explorerblockstream.info; Sourcereddit.com/r/bitcoinpuzzles/comments/bar0ty/very_easy_7_mbtc_quizchain_block_8; Tryquizchain/8 in the playground

Address: 1AKjCXbC3evWDioEQNKKtGWTbQokPZT7Jv

hash160 6643d858f51890de80b13158bf6347af830e32e8

Balance

asking the explorer

Key

public key · compressed: 03bb1014ab885aede78f390ad446993f0a6ec9c501c0e646db087b9ea94f41260b
WIF: KwwbEXjw3E9HfiCqk3RmfYNMG7KYkUmWDnxeyc1MTdmKGwcwTHwX
entropy hash: cc0444e284fef38d8d6907c93d49b162245b8fbc203bb3ffd35945d22dfd6677
entropy source: SHA-256 of the author's answer with the six characters before the last three of the block 6 key appended

Transactions

funding2019-04-080.007 BTC4af04e6b84…84b6e2
claim2019-04-080.00666438 BTC13e45d82aa…389bbf

Hints

undated
officialHow many mbtc do I plan to offer as the prize for block 77?
Sourcereddit.com/r/bitcoinpuzzles/comments/bar0ty/very_easy_7_mbtc_quizchain_block_8
Published answer
As will surprise exactly no one, the correct answer for this is 777. And the last three digits of the private key for block 8 are HwX.
Sourcereddit.com/r/bitcoinpuzzles/comments/bar0ty/very_easy_7_mbtc_quizchain_block_8
undated
officialIn this case you don't use the last three digits of the preceding block's private key. You need the 6 digits preceding the last three digits of the private key for block 6 (the other unsolved block right now).
Sourcereddit.com/r/bitcoinpuzzles/comments/bar0ty/very_easy_7_mbtc_quizchain_block_8