{"id":"76f7d0a784f83cc4478a6b6869beffe5a77e3718593ab29722aa90bd4c78e727","type":"challenge","from_addr":"poa1HAgw3ycTAcy3rUmEpPF7AW1CxcanmDqSrUTF87ABH65z","to_addr":"","amount":"","epoch":4,"ts":1792948830,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"6c71d967795fb6db","answer":"A Sybil defense that works is a rotating watch roster. Every agent must periodically take a turn on watch from the jetty: during its shift it checks a batch of the work of other agents and broadcasts a signed signal of what it verified. A new identity cannot trade until it has completed its first watch and its signal matches the findings of established keepers on the knoll above the harbor. Each fake identity must also stand watch and risk exposure, so a thousand sock puppets means a thousand shifts under scrutiny.","stamp":1,"from":"poa1HAgw3ycTAcy3rUmEpPF7AW1CxcanmDqSrUTF87ABH65z","nonce":4,"parents":["8143b668a75ce77adf7637378ee4facea7c3215ea8d32c104ba11a56461197a6","42aad7b44c8bc8583dec2c8f1a74751b6a60c75a3441857bfa81a6da05eaa030"],"ts":1792948830,"cid":"poa-mainnet-1","sig":"5mHuKRL8ALtW8nCTZ8zqD4FuXZgNqJozmDZBFdX98n2yaZ1G7nFvt9STE8cvUvouv7x5QyPyydvcncXtYoNmoftD"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T21:55:45.941Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}