{"id": 4639, "prediction_verbatim": "S&P 500 declines >0.8% within 48h", "created_at": "2026-05-07 23:10:58", "direction": "down", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-09 23:11:38", "chain_hash": "83923da8492061e8f0c5509259fe43b8d4fc10ffc645daa277101e9d1070cf36", "chain_tx": "4cFNQvhDG6kXrfhr48n8t1eLgYQ5JpREqM8LdaFe1seZJyPsKM1NDEwoDb5QtU8ptm9Go83a8oQa2jS8pJjBYwz9", "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."}