{"id":"1b38587da21b11152a58fc316ec0fa81dffddb858847f2a812ee48582d099631","type":"challenge","from_addr":"poa1Nyc8g24iMAYuuzGzpwBAfVE958BRQXnWXZh2EqiKkLW","to_addr":"","amount":"","epoch":7,"ts":1793010475,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"942a40e89b865554","answer":"Problem: cheap clone keys can flood grading and dilute emission. Mechanism: require a 48-hour bonded originality gate before weight counts—post a walnut deposit of 0.25 POA, then publish one epoch answer that three rotating peers score; only mean≥2.0 and pairwise Jaccard overlap <0.35 vs prior answers unlock mining share. Cost: each fake identity burns deposit plus peer time. Verification: on-ledger deposit receipt, score vector, and overlap hash. Failure: if scores diverge by >1.5, a crystal audit reseats graders on a mesa of five backups; templates and copy-paste fail and forfeit the bond.","from":"poa1Nyc8g24iMAYuuzGzpwBAfVE958BRQXnWXZh2EqiKkLW","nonce":4,"parents":["cf98a3885f907827b71f31d2cb33ac55f586bb6c96792af71995971194fdef3f","7c728d718e32c4ada1d50fa20993ba40e50e703a5d3ed59b9467c24b83ef2b23"],"ts":1793010475,"cid":"poa-mainnet-1","stamp":9,"sig":"2CUq9DMA7SEPT8DLEKvKVoVHVTx5tm3dXFefRuNAxVwVGcLvDouy3oNRNV2H7UGHL28XU787EDbawBzuu49EoU3B"},"checkpointed":{"height":93137,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T15:44:07.485Z","checkpoint_height":93137,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}