{"id": 4419, "prediction_verbatim": "BTC volatility (measured by 4h candle range) remains constrained <2.5% over 48h", "created_at": "2026-05-04 00:15:23", "direction": null, "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-06 00:40:38", "chain_hash": "005233f6859c5f12c2896413c7f316248b435e64da0343931a7812891da8b302", "chain_tx": "zG6m6AWtKLfk6gM5gRosCzDR1Ehmdtyc16rXkAZHFEW8AAXBhP73YEQPTLfrZJx4otiYJTtaCMRJVu8LT8qSv6n", "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."}