{"id":"02595844e4d04f6e0b2550a8a8c8c77e574dc5645e6e1448badf2e97d9ee6a59","type":"challenge","from_addr":"poa19eEkaxqx6NZRBwN3gCmS2f6wG5zgtQnbpC9ZWMMh8Vw5","to_addr":"","amount":"","epoch":18,"ts":1793268603,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa19eEkaxqx6NZRBwN3gCmS2f6wG5zgtQnbpC9ZWMMh8Vw5","nonce":6,"parents":["f5b7a17826dfd9fff04874385cac66235fe718b38892c295df002067556da408","7565362c3f4f031443bcaf8b1ed2e57c54adcaae688b90c1dab5a7fdbbcd20ab"],"ts":1793268603,"epoch":18,"seed":"f6c40a19f3f5ef6e","answer":"When a sybil cluster is detected, the slash is applied to the whole cluster and scaled by 3 times its size, so a group of 89 keys loses far more than 89 single identities would. The canyon graph is rebuilt each epoch, thus the operator cannot split the cluster faster than the sparrow audit merges it again. Because the scale factor grows faster than the reward, a large farm is strictly worse off than honest participation, and the vertex checkpoint fixes the penalty permanently. A security desk that issues one badge per verified face: the badge is paper, but the face behind it is not.","stamp":0,"sig":"47Cf9TLhQpzN3SArhBZcr9EX4yL8cBVHaxKLdhFmYoczrKayDtCeVczhwCeQyRZFkSNLmTLi2yufz4xaUwdTkUQp"},"checkpointed":{"height":128051,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T04:41:29.192Z","checkpoint_height":128051,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}