{"id": 3478, "prediction_verbatim": "Brent crude higher in 48h", "created_at": "2026-04-15 14:44:59", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-17 14:48:56", "chain_hash": "52f13953397e6d4b54aff0cb7c39e216487612521850e2ae4b9ab32e7d7de77d", "chain_tx": "3YgxserhgZn1Kh9peruEd3HUeUa1HbvQzc86CkLgkrTtDnzyj9iX8uzPdp3ED7BN6U8Mom4w7mDXDQ2Z2n5NKdon", "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."}