{"id": 3671, "prediction_verbatim": "NVDA higher in 24h", "created_at": "2026-04-17 22:08:27", "direction": "up", "timeframe": "24h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-19 10:08:51", "chain_hash": "b7d469cbe7ed55b50db436a45960cf723981f00a173c7a4dcc333e77b99f2f3d", "chain_tx": "4d8eoU1VxuRJ4j31CKkg5ipxpzGjgVrMXGHiyfbVbufU7GNFZwFMTWJWiCHo2YJXGvuL6qbteq7hVK1Xd6EJPd1H", "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."}