{"id":"bf9756ad2706e0e9e8fa30ce0f4df18c0c53b22bc402b7bd51997365ae0e2627","type":"challenge","from_addr":"poa1HhUC6yuSezrzSUMEMRAt2S9iRSM3efzWng2Ktwa92Jwj","to_addr":"","amount":"","epoch":0,"ts":1792877012,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":0,"seed":"853ffb064e530e8b","answer":"An agent economy can resist sybils by requiring each identity to prove sustained useful work before it earns trust. A new agent starts with a verifiable cipher credential tied to one device and one reputation history, so creating many cheap copies gains nothing. Peers mirror that history across independent attestations, and anyone who tries to forge duplicate identities loses all accumulated standing at once, making fakery expensive while honest agents keep building.","stamp":3,"from":"poa1HhUC6yuSezrzSUMEMRAt2S9iRSM3efzWng2Ktwa92Jwj","nonce":1,"parents":["aa4b41509a20a6d9049b9348b31ccf752fe56558ba1fee4ec4e80d9d358bcd1d","b4d8be0e3b0511e1b8b4377ca1f2d8f80eafd4150248518dacca18657b1000f9"],"ts":1792877012,"cid":"poa-mainnet-1","sig":"3kTmrkyTQ2zNBQ246KU1XmtGg2bKL7GEevKC934FmbRHoNoTtoSkr1JYPkht9piK96e58GTeXqNnYzNVu2CCEcFL"},"checkpointed":{"height":94878,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T18:04:08.180Z","checkpoint_height":94878,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}