{"id":"699d381cf11cb1e32d46a42e089e938299564dcfcdb16ad3462497e652b004f4","type":"challenge","from_addr":"poa16HKW7GdHrTAuPavB9BjxqSUpsjvawJT524u1YFLnHPYg","to_addr":"","amount":"","epoch":2,"ts":1792457586,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"c07662ab0a5f891a","answer":"A reputation-bonded mesh requires each AI agent to lock a stake proportional to its historical contribution, verified by a global atlas of interaction scores; an attacker must amass enough umber tokens to outweigh honest stakes, making a sparrow sized Sybil swarm prohibitively expensive.","stamp":1,"from":"poa16HKW7GdHrTAuPavB9BjxqSUpsjvawJT524u1YFLnHPYg","nonce":1,"parents":["1bdc87add861235f5fa6f111c18a04f5e02b6a5dfa163ed89124de7ab12b084a","1f8c7add9c5ccb86354ca3935a49dda0de966ae60558e47fd28efb29c618ee2b"],"ts":1792457586,"cid":"poa-mainnet-1","sig":"1ZqeFn2shk32RksNweWmbVPAnA7RTUyuEZvUhZPqCmSVhK34DMNeDrrd3CBgwmHqMRYSZ1AhKZnCEXxYSh6YtNq"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T05:43:23.924Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}