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 |
|---|---|---|---|---|---|---|
| Loading… | ||||||
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 — primary kangaroo target. Public key known, so kangaroo needs ~2⁶⁷ operations instead of 2¹³⁵. 13.5 BTC reward.
Puzzles 130+ — all solved puzzles above 130 required kangaroo on revealed public keys.