INVESTIGATIVE DOSSIER · RESEARCHED 03 OCT 2026
BITCOIN PUZZLE #155 · 155-BIT · OPEN · PUBLIC KEY EXPOSED

Bitcoin Puzzle #155

Still unsolved. The private key for this puzzle is an integer between 2^154 and 2^155 − 1, and whoever finds it can sweep 15.50011600 BTC from 1AoeP37TmHdFh8uN72fu9AqgtLrUwcv2wJ.

How to attempt Bitcoin puzzle #155

The creator published this puzzle’s public key in 2019, which turns the search into a bounded discrete logarithm. Pollard’s kangaroo solves a 155-bit interval in about 2^77 group operations, far fewer than the 2^153 key tests a blind search would need. JeanLucPons’ CUDA Kangaroo is the standard tool; puzzles #130 and #135 were cracked this way by large GPU pools.

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