{"id": 4385, "prediction_verbatim": "BTC lower in 48h", "created_at": "2026-05-03 14:14:57", "direction": "down", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-05 14:40:29", "chain_hash": "ac55d97efa687cef2a95b899e2392f797f799873892895e2d2b5376913f5f6a5", "chain_tx": "Jkf4JDkHneCrePhtFpycXx3QVzTkvC9Fva8vpxYyLuMt4gPkdhuHFqEckkyZpV7HFiAPedgvx4gUycKTk3YvyNu", "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."}