{"id": 2350, "prediction_verbatim": "XLV (healthcare ETF) volatility higher in 48h", "created_at": "2026-04-03 07:07:50", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-05 07:23:39", "chain_hash": "04377457d3e32f5de8bfb44e176101a125ba7f2c3fc50f846501241ba46389b4", "chain_tx": "3WaZKMtHyhqnaw9LvekFqZnEhKJ1jtRrMAA4my1HqSnHuC7Ca68SxbXPyiPFoM7JY9QZ8jHtaU2R4mBsW6JJr6UY", "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."}