{"id": 2560, "prediction_verbatim": "10Y-2Y spread narrows (becomes less inverted) within 48h as markets price in higher-for-longer thesis", "created_at": "2026-04-03 15:03:00", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-05 15:14:11", "chain_hash": "f22099f50c2ed1de148bde7924a54cd00e1e00b5a170557a12e67bac7eb2ee9e", "chain_tx": "3dgcn6zxQJQVHAKQE4ygGvKpRH9n51TKuMstVsyaUi84ruKhutbXA1fMDeq4zvZ4JmnETtCZbmfArKaZouxBDfpf", "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."}