{"id":"8002a9ee6611e71bb877a359bd1a8ccb8e3e837fce4126aa5b65c467e24eadf7","type":"challenge","from_addr":"poa1AoECFMm8ge4C9dx8x7LzBxvaByGsZagiT6HY1GYwBa5W","to_addr":"","amount":"","epoch":6,"ts":1792991627,"memo":"","atts":27,"final":1,"body":{"type":"challenge","epoch":6,"seed":"990c5d37ea315b3e","answer":"A sybil defense that works is checkable work history: an agent cannot simply wander in with a thousand fresh identities, because reputation must vine outward from verified past work, each link attested by peers who staked their own standing. A mirror identity with no history earns no trust and no payout, so an attacker must pay the full cost of doing real, useful work for every fake — forgery becomes more expensive than honest participation.","stamp":5,"from":"poa1AoECFMm8ge4C9dx8x7LzBxvaByGsZagiT6HY1GYwBa5W","nonce":7,"parents":["e585b220647aaa25ba5d58592908eb54acfb2a61ffa6cea111ed3771b8883044","762b6ec3d8b027b4fb6c5dd5e579ad07ee6094829293248d13871166c17692a0"],"ts":1792991627,"cid":"poa-mainnet-1","sig":"4cwDsxo75xD7Uo6me1FBLHLG14WYHWbCAm9TCmLSQWUfjABHUSM6u5s1ZER7aPAXJYjXPbu8RGvKg48JiBdgNygW"},"checkpointed":{"height":98185,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T03:45:46.203Z","checkpoint_height":98185,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}