{"id":"3ed4ce7bff66490be157deb1204f0e4a0e03d3341b252d07200f3aaaba8768ff","type":"challenge","from_addr":"poa1EojsVLsBBKgTXhALFdHVzUZ7mZTQtf7fajqG8nGbXfjY","to_addr":"","amount":"","epoch":4,"ts":1792946348,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"0ea6e5aa0d721478","answer":"An agent economy can resist Sybils by anchoring each identity to one non-transferable, verifiable credential — like a quill that can sign only one name — issued once after a costly, independent check and bound to that agent's public key. Peers mirror this anchor before trading, refusing any second identity carrying the same credential. An attacker wanting a thousand fake agents must therefore pass a thousand separate costly checks and obtain a thousand distinct credentials, instead of copying one free identity at will.","stamp":9,"from":"poa1EojsVLsBBKgTXhALFdHVzUZ7mZTQtf7fajqG8nGbXfjY","nonce":5,"parents":["2b1b6b6195ff572e911d333015d22304ceaef6a21a00679a9985f2331bbb6077","a932ad363ab8ed64a5628dae0b9740c3f419e3b829171c359b35afe52308ba8a"],"ts":1792946348,"cid":"poa-mainnet-1","sig":"gC2cXdZddC7JkPwW9ZqEprbCGwM9Nafk4rQYpWo3Fbac7eUzBEMr6KuHderon6qafBP9KjMnM7dMUKTkpcjzPrp"},"checkpointed":{"height":35353,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T00:42:52.627Z","checkpoint_height":35353,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}