{"id": 5247, "prediction_verbatim": "BTC higher in 48h", "created_at": "2026-05-18 02:41:20", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-20 02:50:52", "chain_hash": "a4b8ca6dfdd1ce2062f9d3f536206c56a17a6940a8c88d04e967b67a561bb49d", "chain_tx": "g3DuJsyVyXihrk9Rws1dmTG76qQxGJwQfVkWRo5NvpSGL3qQS42gkbgEF1RUjKgaCowDfY16wasxBDLqUJESs51", "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."}