{"id": 4278, "prediction_verbatim": "WTI crude lower in 48h (intraday move against current +0.5% bounce)", "created_at": "2026-05-01 14:39:52", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-03 14:45:03", "chain_hash": "b57155e30a742756c1466b562e60f667547b305f63958571bee485088725ae64", "chain_tx": "WJiFSSsNtnR2RBG24F9KNZs8m9gVqf5cG5nLi8bgbkY9BC9BUvsWETMR9UbvddoSR431194L3tvwy2UQGd8yV65", "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."}