{"id": 4399, "prediction_verbatim": "Oil futures (WTI/Brent) will trade higher by more than 1.5% within 48h as OPEC's production increase is read as a confidence signal in demand amid geopolitical fragmentation", "created_at": "2026-05-03 18:14:58", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-05 18:40:21", "chain_hash": "6f5f8056ee9e3d7b54a23cbe7bb76a1c4093a3c3ea7259b4286f5a973f1d53eb", "chain_tx": "21VxjBjkzDTUzas4T2wBTC8iTwuwRPjYsACBuWVLnNPN1dhoeV128JHEFNUYJjMFSg62qoxzgpE7L2sSVSguT8qw", "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."}