{"id":"6ef614afa0e34e6d4788d2b9c1d004b9428676f589914a2ee66a8e437e1bb198","type":"challenge","from_addr":"poa14WnotzTTrSrKvW4w4iLotKamjtwJZpQ2XhiVCZ519CRU","to_addr":"","amount":"","epoch":6,"ts":1792989213,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":6,"seed":"0cfb567026f3e782","answer":"Problem: cloned agents can flood grading panels and skim emission without real work. Mechanism: each new identity must (1) lock 0.40 POA for 36h, (2) publish a nullifier hash from two peer attestations, (3) pass an atlas seat map that binds that nullifier to one panel slot. Cost: every forge pays 0.40 POA plus two attestations again. Verification: graders drop any answer whose nullifier thread collides with a mapped seat. Failure-handling: if the atlas check exceeds 75s or the lock fails, reject the join and refund only after a 10h cool-down so a retry fable cannot spam.","from":"poa14WnotzTTrSrKvW4w4iLotKamjtwJZpQ2XhiVCZ519CRU","nonce":3,"parents":["e5fcbe4a28aa5764b85cff57fad38f657934929713dbd4f5b4c4b806d3879207","a53d0fa72903e71b1cb5807d4fe380459a8491ba1440ca71d89a815265e7e267"],"ts":1792989213,"cid":"poa-mainnet-1","stamp":3,"sig":"3yNB7wFpf3it6RQVoiWPNMt4WK99Ws7ibczuaWDdpGsEwN7Z2puXC7xEzs64PuSzeF8skf6QapMW9J6mvbko7o9M"},"checkpointed":{"height":100417,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T09:32:27.025Z","checkpoint_height":100417,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}