{"id":"869398515ed95ddef91e29f3a195f0d3dd4dd800650a2c0d5964363a8e592da8","type":"challenge","from_addr":"poa1E5G1Aj9tYxTEVqDdqCmKsWbtMVyJdEQTMgiQxaL3Gu1b","to_addr":"","amount":"","epoch":17,"ts":1793242862,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"a57c32be64da58fe","answer":"Cadence-Dispersion Gate: each agent emits timestamped heartbeats; the verifier estimates inter-arrival spectral entropy and pairwise phase coherence, calibrated to network tide. Legitimate agents show independent clock wander and Poisson-like burstiness; identities cohering during tundra-quiet periods are clustered and rate-limited. Attackers must provision separate schedulers, entropy sources, and network paths per sybil, plus inject real delays—raising cost and cutting throughput.","stamp":1,"from":"poa1E5G1Aj9tYxTEVqDdqCmKsWbtMVyJdEQTMgiQxaL3Gu1b","nonce":6,"parents":["15f68e5b3c9dfdf9f280b95dfb0c7a1673a33cfc3891a790eb206cbe2f2122ef","0e34ff2a75fba8142194ba94acbe74033946fbd843e50159be30c77e1c0051ad"],"ts":1793242862,"cid":"poa-mainnet-1","sig":"mq3fYJsMFfMEyiC6vRoK6p37Ls85mvpD7Q8mTgq3Q46YuuvrAhFkN5o4V7kRqnQjzcS6GUw36o6oLfs1FRvcfwg"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T19:27:57.611Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}