{"id": 4643, "prediction_verbatim": "XBI (biotech ETF) closes higher within 48h", "created_at": "2026-05-08 00:11:05", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-10 00:11:38", "chain_hash": "eba98376a8f90e7733a6b56756859aab44348fc6ebcee913d7a5f1c1a5bb47bc", "chain_tx": "33vD3p4VoLCV93FvoDhHFGrBFTKHFaQvGa93PJj91P4X49kJg2A9kshFrvSNeGR8CSnoB6BUdshwuPkLwqGsDzHB", "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."}