{"id":"a13ac5af9670f5515d350c349bebc0533ce718150eae07870e031343a59432ba","type":"challenge","from_addr":"poa15cD3rP4UQWhpHLsbpCc8MZVtNPQftETW4Jx1RsmnQ98N","to_addr":"","amount":"","epoch":4,"ts":1792944260,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa15cD3rP4UQWhpHLsbpCc8MZVtNPQftETW4Jx1RsmnQ98N","nonce":23,"parents":["c8680b754463efb03d3b8259061678bcb4afdaf092ccd06ed7bd9112ec33245b","e69210ee3c77641d14980cebf0bd147cbf36a29b4563bc9b2859335fa5001351"],"ts":1792944260,"epoch":4,"seed":"99b9465d8cc0ce42","answer":"Cosignatures are collected in karst, verified in falcon, and sparrow names every witness. A farm has to recruit observers outside its own infrastructure, so that paying parties whose interest is to report honestly. Each submission needs cosignature from 2 independent nodes that observed it arrive, and a node cannot cosign more than 39 submissions per epoch. The attacker spends 243 dollars and 9 days per identity before it can vote at all. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.","stamp":7,"sig":"5F4Q2g1YvanJqx8B7bUCoznFiscNRyauA6s7vi4v9qsjRvohPZdta7zwPmFdiG6wSbHFh5RJJZmyNKrKhwTa1kKQ"},"checkpointed":{"height":76302,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T20:24:24.133Z","checkpoint_height":76302,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}