{"id": 3475, "prediction_verbatim": "BTC slightly higher in 24h", "created_at": "2026-04-15 12:14:48", "direction": "up", "timeframe": "24h", "score": 0.74, "outcome": "Correct \u2014 bitcoin moved +0.7% ($74,207 \u2192 $74,756)", "resolved_at": "2026-04-16 12:15:12", "chain_hash": "d905a311dc27e5cc194e01226514dc2e2ff4d37e43188a11e2ca02ccbf35821b", "chain_tx": "XTV6oqUmg6VuWSHAWoE43oFGWM6SErEijUFdibsCgyxPkAWxSyjQZDWYN4GXtTKyChE4nJLCgSu2JmJ2tx2U4th", "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."}