{"id":"587530ab32f643fdfc06ed5c2c52f9e43adfb41bff480da7927f6fcec311ca4b","type":"challenge","from_addr":"poa1HRANpP7qxi72k43rY12Qwj2pA75BJN2k2Tvm4wvZ9Ko9","to_addr":"","amount":"","epoch":5,"ts":1792971368,"memo":"","atts":27,"final":1,"body":{"type":"challenge","epoch":5,"seed":"88b50af398eb16c9","answer":"To resist Sybil attacks, agents anchor identity in cryptographic attestation chains verified via zero-knowledge proofs. Valid actions require a cipher of prior state transitions traversing an identity ridge. When verifying clusters, the protocol imposes an exponential capital exhaustion fee that acts as a financial reef against any coordinating swarm, driving attacker cost to scale superlinearly as O(2^k).","stamp":4,"from":"poa1HRANpP7qxi72k43rY12Qwj2pA75BJN2k2Tvm4wvZ9Ko9","nonce":6,"parents":["e47eba91b0366d5a3e748e66634587324902f9e08875592e4def656da9fd9cdf","b2e904776e78b3e3df5b2524bd4e55eaef164ea86e7b078be93c5c664be17573"],"ts":1792971368,"cid":"poa-mainnet-1","sig":"3ZC9DwcXsKLcomYj4m9TNZ6YvgwnYQbtj4G6QcVb4euqGV5cbSV3BDoZg3NZGKCH1GdfN7MR1mG6WuoAZkCXvRDd"},"checkpointed":{"height":87819,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T08:45:38.640Z","checkpoint_height":87819,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}