move-over-brokers/en-medium-2

Claimed on 2021-01-10 after 1mo 13d 3h 24m, without a published key. 0.002 BTC on Bitcoin.

IDmove-over-brokers/en-medium-204 / 122020-11-28 → 2021-01-10

Puzzle / move-over-brokers

bitcoinp2pkh claimed

Record

puzzle({
  chain: "bitcoin",
  address: "1QFafw3weoWT…VmES6wfJ",
  status: Status.Claimed,
})

tx 2

Trail: Explorerblockstream.info; Sourcekf106.medium.com/everyone-loves-a-treasure-hunt-93885ae8d80a; Trymove-over-brokers/en-medium-2 in the playground

hash160 ff0cd2e65b284a25f5e9bd4b3090d4421b7e136e

Balance

asking the explorer

Key

public key · uncompressed: 045ec26fe27e6915e337cf99f60a1958483b8d449b80a695244d384a84946be68041cf5d406c07a4c289a5eba065da9c4ca37a62fa913762559e2d3a1d2052e8ac

Transactions

Techniques

Hints

undated
officialYou hold the source of each and every key in your hands... as long as you have a physical copy, that is. Note that there are plenty of red herrings too.
Sourcegithub.com/floflo777/open-crypto-puzzles/blob/main/2-mid-prizes/keir-finlow-bates-blockchain-book-600ksats/clues/author-posts.md
undated
officialIn many cases, you'll have to hash the answer three times.
Sourcegithub.com/floflo777/open-crypto-puzzles/blob/main/2-mid-prizes/keir-finlow-bates-blockchain-book-600ksats/clues/author-posts.md
2026-09-01
communityFigure 9 of the book prints a 16 by 16 black and white bitmap.
Sourcegithub.com/floflo777/open-crypto-puzzles/tree/main/2-mid-prizes/keir-finlow-bates-blockchain-book-600ksats
Published answer
Figure 9's 16-row bitmap read row by row with white cells as 1 bits; the 16th column is not drawn, so its 16 bits are enumerated (65,536 keys) and the uncompressed address is compared. Missing bits 0xb968.
2026-09-01github.com/floflo777/open-crypto-puzzles/tree/main/2-mid-prizes/keir-finlow-bates-blockchain-book-600ksats