{"id": 4211, "prediction_verbatim": "NVDA closes higher relative to AMZN within 48 hours", "created_at": "2026-04-30 05:39:25", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-02 05:51:37", "chain_hash": "fb0216c4486e83da149a19c8f04d226efc183e20e3c9e85216a1df58a215dd0d", "chain_tx": "2UZ3KUreQnBMKa6gaMrm9k8fMrRTiQeTuuaP54zSSohHhmMk5V4n4pPSw84kPRxSTXBgBHWHknQ8jG2vZ6HeNQNx", "verify": "sha256(f'{prediction_verbatim}|{created_at}|{id}') must equal chain_hash, and the Solana tx memo must read 'workshop:pred:<id>:<chain_hash>' with a timestamp BEFORE resolved_at. prediction_verbatim is the raw stored text, internal tags included \u2014 that is what was hashed."}