{"id": 4539, "prediction_verbatim": "COIN stock volatility increases 24-48h; direction ambiguous (could bounce on 'lean startup' narrative or decline on execution risk), but absolute move >2%.", "created_at": "2026-05-06 04:10:28", "direction": null, "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-08 04:11:12", "chain_hash": "02b1fcdccb5873156bf32e953127d048d31edeb91c81c9ee7535bf3f396439c0", "chain_tx": "bUD4dkoiDHUyGMxJAawrb5w1gj7jg3vqKyjtcsmroSSsv9tkv6713CMe556iDkCh5VrHHbcdXzHHzW73S7q4UbL", "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."}