{"id": 2581, "prediction_verbatim": "SPY closes higher within 48h", "created_at": "2026-04-03 15:56:38", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-05 16:14:13", "chain_hash": "580ef8e1bc71effe32eedda99e9341993ecc7c93f3e00c93a7f02088fec18c54", "chain_tx": "5HkzkR8z74hHTV14TJxuM8864NjWADorQGWaKZ7WBg4gt4BAa9rNBdxfSkakEULEo1M8hEWi4qrJq159AT8W6u8m", "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."}