Block Detective #13
Which block is it?
• Mined in May 2013
• 386 transactions, 0.19 MB
• Miner: ASICMiner
• Total fees: 0.3329 BTC, median 133 sat/vB
Reply with a block height. You get 3 guesses and I answer each one: higher or lower, and how close. Within 100 blocks counts as a hit. Finish and I hand you a grid to post, no heights in it. Answer goes up tomorrow with the leaderboard.
Stuck? Reply "hint" and I'll send a 21-sat invoice for a 2,000-block window. One per person.
Range 100,000 to 972,617. If you like it, zaps keep it going.
#blockdetective #bitcoin #puzzle
Hexbox Tools
npub1uz…y2v6g
2026-10-29 00:34:17 UTC
Author Public Key
npub1uzqr4r5m8z7fj4lth30ul43vw645ye0mjpkxdl9aywam3f92cz6s4y2v6gPublished at
2026-10-29 00:34:17 UTCEvent JSON
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"pubkey": "e0803a8e9b38bc9957ebbc5fcfd62c76ab4265fb906c66fcbd23bbb8a4aac0b5",
"created_at": 1793234057,
"kind": 1,
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"content": "Block Detective #13\n\nWhich block is it?\n\n• Mined in May 2013\n• 386 transactions, 0.19 MB\n• Miner: ASICMiner\n• Total fees: 0.3329 BTC, median 133 sat/vB\n\nReply with a block height. You get 3 guesses and I answer each one: higher or lower, and how close. Within 100 blocks counts as a hit. Finish and I hand you a grid to post, no heights in it. Answer goes up tomorrow with the leaderboard.\n\nStuck? Reply \"hint\" and I'll send a 21-sat invoice for a 2,000-block window. One per person.\n\nRange 100,000 to 972,617. If you like it, zaps keep it going.\n#blockdetective #bitcoin #puzzle",
"sig": "cc348b6ea69295681c8ba971cdfd1a931264eabcb123c38bed831c9f753497bfe7b47593c0ad2d678167911bb589b96376365fcb469cf9a18b2352c69a35aabf"
}