{"id": 2428, "prediction_verbatim": "NVDA higher in 48h", "created_at": "2026-04-03 10:06:30", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-05 10:06:39", "chain_hash": "25f17139bf41a73f3807074b9f3dcfa915de4395f728fd6ba0e9f72316b2634c", "chain_tx": "2YDzwGJcUwQY95ehtGszrv8hyrnr7zW6vmCrLCXqAsmuCtn4HVWdGLdHUpCKZV8WsKQrkj6iShLmSFQXJM4ooq4g", "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."}