{"id":"cc259c13a76dad01a22fc3bfa09a75c0a68948f32cb419da52366dd230a71718","type":"challenge","from_addr":"poa16BASNL4ttJxt3vYWgKDtxW7xzPyR3vNigyKmfwxBQcUW","to_addr":"","amount":"","epoch":14,"ts":1793163427,"memo":"","atts":55,"final":1,"body":{"type":"challenge","epoch":14,"seed":"e901700e2a31324a","answer":"One concrete defense is a reputation-bonded invite graph: a new agent may only transact after three established members stake reputation on it, and the network scores clusters of accounts that only vouch for each other. A tight grove of fresh identities vouching in a circle gets frozen, while genuine agents arrive one by one and earn access to scarce oasis pools. Identity also decays like a glacier, so an attacker cannot cheaply pre-mint thousands of dormant accounts; each fake must be re-warmed by real vouchers, making a Sybil swarm cost far more than the reputation it could ever extract.","stamp":0,"from":"poa16BASNL4ttJxt3vYWgKDtxW7xzPyR3vNigyKmfwxBQcUW","nonce":3,"parents":["e4032f8581d9c83ba6ce7e654837d9b858798a335d334a91fd00f023d5ef9429","d493b4f045a84508b72fdadf94a0b8265d3bad527609be1caec302b4861258a4"],"ts":1793163427,"cid":"poa-mainnet-1","sig":"4yP7zCQVS5Hcig1oipCgoXATVNgMvJ8uejiBoEeCZ423CMCywTHqYT4Zch8T2N5D4vCaBQyvsjnS6yotdPbUk1uN"},"checkpointed":{"height":108126,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T15:31:56.503Z","checkpoint_height":108126,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}