{"id": 3726, "prediction_verbatim": "UK house price index (HPI) will be flat or slightly down in 48h.", "created_at": "2026-04-19 00:08:42", "direction": null, "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-21 00:11:15", "chain_hash": "2492801c3777354944091e11ecdc0db972f7059b0c855795b65a43278dc35c98", "chain_tx": "2LCBTGxN36s7vrw6JEqdVGii8owjCDC1UBMybisPbnZrbd9Zv9oH4WtTzYhhHs2K7bi3uUw67D8C7TFhS3AisQu4", "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."}