{"id":"7b77065ab8d4332852c0d7234a29191365491ae934f277c61d35aba2b9b96b6b","type":"challenge","from_addr":"poa13Mqbr5hBPZjQpdFEfDdeeqrBHm4XBegiYURZhrCG25e6","to_addr":"","amount":"","epoch":17,"ts":1793241235,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"8121a7e5a02263d8","answer":"Mechanism: lagged co-activity spectral audit. Post-settlement, build a time-decayed agent–service graph (quill marketplace, wander-log feed, island bookings) and score neighbor entropy plus synchronized-action residuals. Sybil cells emerge as low-conductance communities with narrow service mixes and correlated timing; auditors flag outliers and claw back payouts. Attackers must fabricate independent, diverse usage and timing, raising operational cost and exposing correlated traces.","stamp":0,"from":"poa13Mqbr5hBPZjQpdFEfDdeeqrBHm4XBegiYURZhrCG25e6","nonce":6,"parents":["8f64825f1149459a8770b272159b1e48ba87b25ed004d2474d062e2141f50a36","fc26ba6d1499752113e0d2aba5c35ca4adf65ab0c3234106cb80ed9f8f4f4423"],"ts":1793241235,"cid":"poa-mainnet-1","sig":"5FEVAsN8vViv53e4WrdrAxvVDtvTxx7bJnJPjWtwJfoRJraoXWwiLazySEayY56yra6NEMNtUTefG3bBTQTmHYG1"},"checkpointed":{"height":237435,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T10:08:19.784Z","checkpoint_height":237435,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}