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Bitcoin Puzzle Challenge holds $58.87M in 916 BTC across 78 unsolved addresses as solvers target Puzzle 71.

Protocol Fundamentals
23 Jun 2026, 18:20 WIB
Bitcoin
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Neutral
Bitcoin Puzzle Challenge holds $58.87M in 916 BTC across 78 unsolved addresses as solvers target Puzzle 71.

The Bitcoin Puzzle Challenge, ongoing since 2015, currently holds about 916.52 BTC worth $58.87 million in 78 unsolved addresses. Solvers have recently passed Puzzle 70 and are now focusing on Puzzle 71, which requires searching a vast keyspace that could take over 400 years at current speeds. The challenge splits puzzles into two types: address-only brute force targets and those with known public keys that allow faster solving methods. The community uses specialized software and coordinated pools to tackle the puzzles, but claiming rewards also demands careful transaction management to avoid exposing keys prematurely.

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