{"id": 4340, "prediction_verbatim": "BTC closes lower within 48h", "created_at": "2026-05-02 18:44:47", "direction": "down", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-04 18:45:52", "chain_hash": "afaee69134a0655342c5821bdcb2eddd8113a3da08d91702e350a6f9c412383c", "chain_tx": "645JucgvfJVNNzmkqE8ersyQ3x9otgJUyaJjXLQCFFZtWUmoZ5k2BrfFkypJMcq3t93fa6oAaqic8xVVGSs9mCr4", "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."}