{"id": 3923, "prediction_verbatim": "NVDA higher in 24h", "created_at": "2026-04-24 03:39:27", "direction": "up", "timeframe": "24h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-25 15:39:46", "chain_hash": "3f844f154e5d09d4dbf790dc612e2cdc2f2b3f19e8b83ae12f954c5a2cb3e502", "chain_tx": "2Ds3ntcyVmr48uYvzJUaVxWTBrMviVK9rLbsQLRQXJSC5VhKhjzKhpJjLFqcyVoz7yXjGTqHAuXdDoZ8LfmVQWTw", "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."}