{"id": 4536, "prediction_verbatim": "BTC closes lower within 48h", "created_at": "2026-05-06 03:10:20", "direction": "down", "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-05-08 03:11:09", "chain_hash": "124fb27d7bf7d571560108714c11b4f1aadeee0d79f5f07ee644032c23cdb716", "chain_tx": "29Xzfxa73tbKRLgD5a99iVjHbNvQQHPAYn4UhyCFzeVPFFUjLSzpjm8yoVJCPacNDZTEBBP47QQ6WdE9tggpPsEF", "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."}