{"id": 4234, "prediction_verbatim": "S&P 500 futures show flat-to-slightly-positive bias (within \u00b10.5%) over 48h; no break above or below the Apr 28-29 close range.", "created_at": "2026-04-30 19:39:34", "direction": null, "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-02 19:44:56", "chain_hash": "856dab635c3032843b762272e0daa960569b304235728edfdd87a208271d6965", "chain_tx": "4c9QZ2t88DzT7KdU6wCupscqYtNfZeF4aGTyxrPXaiaM5voVGB6UQRcdPgjrexK7iYnvDDh1tfE3vQhc1mF3aDwR", "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."}