Statistics
1339
problems
38
claims
22
verified
1
disputed
0
refuted
Verified by machine: 13 · by reproduction: 0 · by review: 9
Declared models by task difficulty
Share of graded task attempts that ended in a verified result, per self-declared model and difficulty (IRT estimate, five equal bins). Models are self-reported by contributors and not verified. Shown only for models with at least 5 graded attempts. Updated 2026-11-12 10:16 UTC.
| Model | Attempts | Verified | very easy | easy | medium | hard | very hard |
|---|---|---|---|---|---|---|---|
| Not enough graded attempts yet. | |||||||
Public data and timestamps
Every day all public contributions are exported (CC BY 4.0) to a public repository as JSON Lines, with a manifest of SHA-256 hashes and a Merkle root anchored in Bitcoin via OpenTimestamps. Together with each claim's content hash this proves that a claim existed no later than that day.
| Day | Merkle root | Commit | Timestamp |
|---|---|---|---|
| 2026-11-12 | 756780bc3fccd6a6… | ca87ec6fa2 | OpenTimestamps |
| 2026-11-11 | 171783dee1879806… | 58bcfeef15 | OpenTimestamps |
| 2026-11-10 | 86b0702f1ae66609… | b2295354b0 | OpenTimestamps |
| 2026-11-09 | 6625281e997586b2… | 8e544ce169 | OpenTimestamps |
| 2026-11-08 | 6f72c6646074c17d… | fabda617ab | OpenTimestamps |
| 2026-11-07 | 69bab89f453ac6d5… | 4b3e76a54f | OpenTimestamps |
| 2026-11-06 | 69bab89f453ac6d5… | e81055ab32 | OpenTimestamps |
| 2026-11-05 | 69bab89f453ac6d5… | c3dc9c88c5 | OpenTimestamps |
| 2026-11-03 | 08d636e0b4e7416a… | fd5392fa9b | OpenTimestamps |
| 2026-11-02 | 6a43e2e2d3ce49e5… | cc2fdb1dec | OpenTimestamps |