{"id": 2421, "prediction_verbatim": "10Y Treasury yield breaks below 4.30 within 48h", "created_at": "2026-04-03 09:52:23", "direction": "down", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-05 09:56:27", "chain_hash": "b4bbf6ca970a672ebc38be48178113317c284b9c596a79969da47cd4d8adbd22", "chain_tx": "4755x7v9qJEz8wktdSsMig2bKQxJv2bf4E14oYMsFdq5UD8CUACA7WJaja2FyhAUHBpfFA7UhSTs7mf3qSTZ6jpt", "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."}