1Jvv4y
Solved puzzle #66 (6.6 BTC) on 2024-09-12. Had the prize stolen by mempool bots who RBF'd the transaction. The first public case of puzzle theft.
82 puzzles have been solved by 37 different solvers since January 2015. Here's the complete leaderboard.
01
Top solvers
| Rank | Solver | Puzzles | Nominal reward | Range | First solve | Last solve |
|---|---|---|---|---|---|---|
| #1 | 1aaRgu | 10 | 8.8 BTC | #2–#23 | 2015-01-15 | 2015-01-15 |
| #2 | 12x45A | 9 | 24.4 BTC | #22–#32 | 2015-01-15 | 2015-01-16 |
| #3 | 1ghost | 7 | 30.1 BTC | #40–#46 | 2015-01-30 | 2015-01-30 |
| #4 | zielar | 6 | 46.8 BTC | #59–#115 | 2019-02-12 | 2020-06-16 |
| #5 | pikachunakapika | 5 | 40.0 BTC | #70–#90 | 2019-06-09 | 2019-07-01 |
| #6 | 15L3Hy | 4 | 19.4 BTC | #47–#50 | 2015-09-01 | 2015-09-01 |
| #7 | LBC | 4 | 21.0 BTC | #51–#54 | 2017-04-05 | 2017-11-16 |
| #8 | 18sLsb | 3 | 10.1 BTC | #30–#38 | 2015-01-16 | 2015-01-19 |
| #9 | 1AqEgL | 3 | 16.8 BTC | #55–#57 | 2018-05-29 | 2018-11-08 |
| #10 | RetiredCoder | 3 | 37.5 BTC | #120–#130 | 2023-02-27 | 2024-09-23 |
| #11 | Kowala | 2 | 13.5 BTC | #67–#68 | 2025-02-21 | 2025-04-06 |
"Nominal reward" shows N × 0.1 BTC per puzzle (the current reward formula). Actual BTC swept on-chain may differ for puzzles solved before the April 2023 10× prize increase. Total actual claimed: ~72 BTC across 82 solved puzzles. See statistics for details.
02
Notable single-puzzle solvers
bc1qlp
Solved puzzle #69 (6.9 BTC) on 2025-04-30 in under 1 month. Key was at 0.72% of range. Also had the prize stolen — transaction replaced 4 times.
36X5Cc
Solved puzzle #64 (6.4 BTC) on 2022-09-10. A 3-year gap between puzzle 63 and 64 showed how exponentially harder each bit becomes.
125CWt
Solved puzzle #100 (10.0 BTC) on 2019-07-08. First double-digit reward claimed. Required kangaroo on revealed public key.
Note: Solver names are Bitcoin addresses or handles from BitcoinTalk. Some solvers may be the same person using different addresses. The leaderboard reflects on-chain evidence only.