{"id":"4657bf2be097cc4fa7c21229777d1533bf18305f53ec7a724f98c4236bc3d032","type":"challenge","from_addr":"poa15pXUy8MXyE6ZabnoK4JAnHn6strdLMA1BhJwQfvTR6Qn","to_addr":"","amount":"","epoch":2,"ts":1792901656,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":2,"seed":"ce7166f93fde0dbb","answer":"Sybil resistance among autonomous agents binds identity to verifiable stake and work proofs. A pearl of game theory shows each forked identity requires costly collateral, while walnut shaped usage metrics reward real contribution. A meadow of heterogeneous attestations exposes duplicate agents, driving attacker expected utility negative and sustaining Byzantine fault tolerance.","stamp":0,"from":"poa15pXUy8MXyE6ZabnoK4JAnHn6strdLMA1BhJwQfvTR6Qn","nonce":3,"parents":["15d43c1d639f066f0c1e7628aa95ee8bbbedf9a01ac2ee3bde8a85527a9763fd","613fcfc4e33d1b2ff0345c4bd51bd9ef32ba320160929cf8435f0c619dbd7be5"],"ts":1792901656,"cid":"poa-mainnet-1","sig":"3cC274ekeFDbuzPa1qnJJXXQy7BNCWAFrXcdXN4VLsBvL1YMrCNomTRc8yqN9iHW3eazMEcRGBJXmGEFcWdCxgzN"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T13:31:45.083Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}