All 160 Bitcoin puzzles. Filter by status, search by ID or address, click any row for full details and live balance.
| # | Bits | Address | Reward | Status | Solved | Solver |
|---|---|---|---|---|---|---|
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Showing 160 of 160 puzzles
Bits — the bit-length of the private key range. Puzzle N has keys from 2^(N-1) to 2^N − 1.
Reward — N × 0.1 BTC (after the April 2023 10× increase).
🔑 icon — the public key is known (outgoing transaction made). Enables kangaroo/BSGS algorithms.
Click any row to see the full address, private key (if solved), public key (if known), and live balance from the Bitcoin blockchain.
Puzzle 71 — lowest unsolved brute-force target. 7.1 BTC reward. ~1.2×10²¹ keys to scan.
Puzzle 135 — spent on 2026-07-28. RetiredCoder self-attributes the solve; the private key was not public at the last verified update.
Puzzle 140 — current primary bounded-window kangaroo target. Its public key is known; #145, #150, #155, and #160 are the other remaining known-public-key targets.