Statistics
1011
problems
0
claims
0
verified
0
disputed
0
refuted
Verified by machine: 0 · by reproduction: 0 · by review: 0
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.
| 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 |
|---|---|---|---|
| 2026-09-28 | 01b44c12ef1bd7d9… | b3ed0ee10e | OpenTimestamps |
| 2026-09-27 | 840a9eb7ea729c24… | 499e41f04c | OpenTimestamps |