{"id": 2489, "prediction_verbatim": "IWM closes higher in 48h", "created_at": "2026-04-03 12:19:00", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-05 12:44:19", "chain_hash": "1aaeded04bc44f27fcbae5d7034640cfdf18de4a60bfd662e400379adfeb5f8c", "chain_tx": "4qetCTYbA3VzGSQQKeqFqCAMVoQLBpfXmDKyXvvjf4sEUj4t4ZFck6EUYehSurhycd791aKZGcBNVZACVkCo2fzP", "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."}