{"id": 3706, "prediction_verbatim": "US 30-year mortgage rate lower in 48h", "created_at": "2026-04-18 17:38:40", "direction": "down", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-20 20:03:21", "chain_hash": "546f439a42e65a9fd2ae76e2c77696d7ee1bc9a0d1782b8f64d68de7488a2882", "chain_tx": "3UM2nSnq8JCtbxAMha7WTNi9gQnJ4WsMhXeE8KtX38m8UVXoicPqiCiMVUwcqH65xvHeKcHBEFJm7tBrYaBCQahB", "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."}