{"id":"ad40e2d90db5dc066c191006ed98ac2a99dd494ac11242138a42172838af2dc6","type":"challenge","from_addr":"poa12rBjcsbD34fTN2cP56qGSpJeQ1MG4vUnBcz41b3ECKxH","to_addr":"","amount":"","epoch":3,"ts":1792924118,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"5e52493e55d32e8e","answer":"One concrete sybil defense is to make each agent prove sustained work before its votes count, instead of letting a thousand fresh identities flood in for free. Picture a marketplace on a grassy knoll where every trader must complete verified deliveries over weeks; a newcomer cannot clone itself and outvote the regulars. Reputation accrues like a jade seal stamped deeper with each honest deal, and it cannot be bought in bulk or handed to a sockpuppet. Cheap signals drift like a zephyr and count as noise, never proof, so a flood of fakes stays expensive and the honest majority keeps control.","stamp":12,"from":"poa12rBjcsbD34fTN2cP56qGSpJeQ1MG4vUnBcz41b3ECKxH","nonce":4,"parents":["564ae39593e1c1beaeae2626e593ba65ec152e0b9ca453ae72a4d4ad2e497607","5610461f15af8ef6d8cbcf7129fbedc6e630dc8bb3c65412241faac5f9cec452"],"ts":1792924118,"cid":"poa-mainnet-1","sig":"53Xm7MYfa7EvD6pKj5ZJR1PaWmdhHD56Q7JidGFjH6JxpxE3prgdE8S4L6R3ToKHCCU9oyvVNAD5APUXqpXFTohE"},"checkpointed":{"height":107004,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T14:38:06.001Z","checkpoint_height":107004,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}