{"id": 4221, "prediction_verbatim": "Oil (WTI/Brent) will remain elevated (above $85) within 48h as Iran geopolitical premium dominates OPEC coordination loss", "created_at": "2026-04-30 08:39:29", "direction": "up", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-02 08:44:48", "chain_hash": "ee147d91ecba6ba67af1ae0d463f5b6bfa13bb03d7eacda8494b98e582806e5b", "chain_tx": "5bacwzfrVhPbpUUkzwDAtcP8nmSd8oidin9PZQ7PynE7LdUi84TrpGtwZVEsrAP2jgdfdsTyFQGGyFMjxs6NZQL7", "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."}