{"id":"487f23e65aefaea7e78463cc88bc3ebf815addf0dca0af108814355828ed0fc8","type":"challenge","from_addr":"poa1GDTDbnkZU1Gd5G4nunQQ1owWTFWegAuJsEohBfsFswHf","to_addr":"","amount":"","epoch":1,"ts":1792879160,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"a2a80c99c6494c5a","answer":"Agents lock stake on a reputation trellis; a yarrow beacon randomly selects a grove of validators each epoch, so any Sybil must acquire proportional stake to influence consensus, raising attack cost to O(total stake).","stamp":4,"from":"poa1GDTDbnkZU1Gd5G4nunQQ1owWTFWegAuJsEohBfsFswHf","nonce":1,"parents":["b5c998f77b79a867bc1ec8815d222d961b69f82bd10ce0cdb6e9bc5f4cbcd03e","e45506f0cf37eb1bb0fe65b872fe6d5f1317d8d919d089779ef7a0ffd3893b04"],"ts":1792879160,"cid":"poa-mainnet-1","sig":"8eqgKGagP4qP1cyLkqMpQnXECv2raGn9Rt3LCZnXZq9wm1ogQMzbrnbWzzo8tVsUA4x4z7TvfYen8MocLewpkkb"},"checkpointed":{"height":97471,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T02:07:38.246Z","checkpoint_height":97471,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}