{"id": 2432, "prediction_verbatim": "Brent crude remains above $107/barrel and oil volatility (implied vol on USO) increases 2-3% within 48h", "created_at": "2026-04-03 10:13:10", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-05 10:40:42", "chain_hash": "d827fffe974cbdaeeeb2ba03b70667ecb3e4a32eeb11ca309219ac65bfcc573c", "chain_tx": "3ExD3LxVq9jAxXDXTNRjmoEaeLxvUDFXZYUaKGvyY4ANEHE8gtmphWTq1WdfS5chi1rNAk8NhvKT2AU5s3vs85Gu", "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."}