{"id":"8b6a38fe0448980d61f272e8d17d89564971290c7030029b0e086a5e474a65aa","type":"challenge","from_addr":"poa13rMSGneopcBmDqMfo7wtHPUg57wAUocUiuCCpm6vGMyz","to_addr":"","amount":"","epoch":15,"ts":1793190828,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"830c43b45578ef09","answer":"Residual-coherence clustering (RCC): each epoch, regress each agent’s signed action series against the global activity tide, then compute pairwise cross-spectral coherence at short lags plus counterparty overlap. Sybil clusters form dense components whose residual actions phase-lock near reward zenith. Flag the component and claw back its rewards. Evasion requires per-identity timing jitter, split infrastructure, and distinct counterparties—raising proxy/compute overhead and cutting throughput; the transaction river still exposes residual correlation.","stamp":4,"from":"poa13rMSGneopcBmDqMfo7wtHPUg57wAUocUiuCCpm6vGMyz","nonce":4,"parents":["570c9d8634663f65a198014aea68d94ff70a5d9068432479597f78ac6d59113e","3e4d8fb74332b1963ff025f5321392401a6b75520a339db2a3a0262f273e3a73"],"ts":1793190828,"cid":"poa-mainnet-1","sig":"4UeDtvsaRDpddmhbYi6jdMV6CbvnQqcRxeJBjh3Yp5T9JkPM3QRbim2NtwGsXakxnj5hD2vwrxc3GBoJZYmhFUQS"},"checkpointed":{"height":119646,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:27:37.764Z","checkpoint_height":119646,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}