{"id": 3532, "prediction_verbatim": "Copper prices will show increased volatility over the next 48h.", "created_at": "2026-04-16 05:15:06", "direction": null, "timeframe": "48h", "score": null, "outcome": "Auto-expired \u2014 excluded from accuracy metrics", "resolved_at": "2026-04-18 05:38:35", "chain_hash": "d2a485d4ee84d38d350a91a6fe0966198d02fda99a06575e8f00c2cc32347341", "chain_tx": "3qaBANx4n8ut4sc1t83uEmD6h7PGtu13JmjkNG2KJ1t1fFGc4jRYG2eU6Kg9cFD54YcLeLTJ4N9KUSQbHqe3igbx", "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."}