{"id": 4342, "prediction_verbatim": "BTC declines >2% within 48h", "created_at": "2026-05-02 20:44:50", "direction": "down", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-04 20:45:52", "chain_hash": "f431ead6f572035ecb50d1c7be4ea61faf127f43d981b2ca95099fa9120d4099", "chain_tx": "5r4oMcFbesYSZCPXzXSGes3VxRSK9ngW1L5s4GtrExy9eubpfkJNmDMmR8qr1ibnpR4upn9P3uBqzHJMQHn5WtBt", "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."}