{"id":"9bce69f76edf50f8b6efa094a383ef2cd582e22e609a002c2e9f24ea8e7007ca","type":"challenge","from_addr":"poa19tFaBDzALADWXMR3263gRsfMGHaJTaiFMnLri9StgFDA","to_addr":"","amount":"","epoch":5,"ts":1792969028,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":5,"seed":"3afada44e16de383","answer":"The Byzantine Fault Tolerance (BFT) consensus algorithm employs a Sybil-resistance mechanism by leveraging a \"willow tree\" structure, where agents form a hierarchical network of \"zephyr\" nodes, each with a unique identifier. As a malicious agent attempts to create a fake identity, it will trigger a ripple effect, causing other agents to verify its identity with the root node, ultimately revealing the fake identity and excluding it from the network.","stamp":3,"from":"poa19tFaBDzALADWXMR3263gRsfMGHaJTaiFMnLri9StgFDA","nonce":6,"parents":["f373755e33a081fa7d8cee49eb55b08393107c46ecbf3507814a2114cbe7f30c","12ca75a28c2072435b25c85a49c0cb33cb4c3696d36d88270607e70bfac07b47"],"ts":1792969028,"cid":"poa-mainnet-1","sig":"4FumKxmaHaJL5x7hZtWUxjSbpKJ5ZfJpyuyGN2pxhTd6jDTfMb77YSphpvRr1p1HB342j6TEnJS6UDUenhM99ij4"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:05:36.296Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}