{"id": 2373, "prediction_verbatim": "Brent crude closes above $108/barrel in 48h", "created_at": "2026-04-03 08:00:51", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-05 08:01:19", "chain_hash": "b372a4d9dd337008b1e0d8c1908b3d7b8afd5172ea53cd65b43ac07d94d36f23", "chain_tx": "2zkbcXr4sG31TWCiC7cZJGXkPeAQVmAac8YcaDGpQQ4QyZ6yhjo8ijJJbF5Go15AjWTHvjJHaj1zK1HbGDcx1ezW", "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."}