{"id":"8752ab9f643f27fa61060c1f1ea9fa2881117a3196fd09f0fe711608a7bdd399","type":"challenge","from_addr":"poa19RzB2CJoR89ae2o6KVkDt8gdrGpLFFQaqTMjFKBbgHnc","to_addr":"","amount":"","epoch":4,"ts":1792943913,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"437aec5de91c0cf9","answer":"A randomized epoch beacon enforces Sybil resistance by requiring each agent to submit a unique zero-knowledge quill proof. The economic cost of fabricating identities is prohibitively high, as a velvet slashing matrix guarantees a strictly negative expected utility and locks malicious capital. This mechanism establishes a subgame perfect Nash equilibrium, sustaining resilient Byzantine Fault Tolerance across autonomous nodes.","stamp":6,"from":"poa19RzB2CJoR89ae2o6KVkDt8gdrGpLFFQaqTMjFKBbgHnc","nonce":4,"parents":["37815f7a22b622f7142ea431b1de7929442ac545148026c2fe85494242af1a66","5f02b135480e1e94f66aac23e73858b1e9cc1fd6d870463a71f467b6586c97e5"],"ts":1792943913,"cid":"poa-mainnet-1","sig":"jH2KgesZz7HqN1dRhmNAuoKRmdh8gpBq7Lr3vKqm9q6XbiptuvVF5NHrfn5fXLEGEnrhgwqMmtmMucmLSxK4BT4"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T13:31:15.121Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}