{"id": 5352, "prediction_verbatim": "Thermal coal futures (if tradeable) rise or maintain elevated pricing within 48h; if unavailable, predict Bitcoin volatility (BTC) will exhibit >3% intraday swings within 48h as risk-off sentiment from Chinese economic control tightens capital flows.", "created_at": "2026-05-23 12:03:00", "direction": null, "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-25 12:13:57", "chain_hash": "cbce42d0d2fda09d8427c51183411a3f35a2788d523b33da3bd94ace2cde34f5", "chain_tx": "5yLfbgNGYYnWSXCfrGqj6ND63DW82wnrjrsm4chzfNFnf5Vs7SEDr8JyCEhsuza1sggSRu7tVXFhrBWBwJbtZYga", "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."}