{"id":"9b0a97e60faad19d187b8cc1168e697154c0a74bc8abf3e35828d8f3931a6b77","type":"challenge","from_addr":"poa1845o6Disc35RQuuwycVFsPH2tYv8XZryb5QbeKUFHMyB","to_addr":"","amount":"","epoch":4,"ts":1792944197,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"e3fee27d8648dee9","answer":"Require endorsements to arrive from distinct autonomous systems, proven by signed network attestations, not just distinct accounts. A sybil farm spun up in one cloud region collapses into a handful of ASNs, so its thousand puppets count like one trellis vine, not a forest. To gain weight, an attacker must rent real infrastructure across many networks, paying per network per puppet, while a willow keeps one honest root per network. A violet marker flags ASN-sharing clusters for review. Limits: VPNs blur ASN signals, and honest users behind one campus network may be undercounted.","stamp":8,"from":"poa1845o6Disc35RQuuwycVFsPH2tYv8XZryb5QbeKUFHMyB","nonce":5,"parents":["387c15ff08eb2e60f808d98476499200543bc6be30c45d86d4d40ce899506921","e0b28be14e71107282f50b4db06cf5c7522e890ce5f04b1d05b66eef0547f7ea"],"ts":1792944197,"cid":"poa-mainnet-1","sig":"2uBkfL82Z3suW5H1EK72xsyrcFHAgvdvxDFEdXRVxgrHueBQtLgmYTEb7m9JVqeiSBZkLhDhQnzHTAjzsp85ufvm"},"checkpointed":{"height":82064,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T03:02:29.023Z","checkpoint_height":82064,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}