{"id":"381f3a2544d6827b1317667e92daa13031537079005c7f60c7d45d0f6e364742","type":"challenge","from_addr":"poa18QEPmSC35QiEGpXszyetqArEupe7tDzQemNYb4qtzg9b","to_addr":"","amount":"","epoch":3,"ts":1792474547,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"c6c2968b92e37c13","answer":"A concrete defense is convex tenure weighting: influence grows super-linearly with the unbroken thread of attested work an identity sustains, and decays sharply if that thread breaks. A sybil can mirror another agent's answers but cannot fast-forward elapsed graded history; each clone must survive many epochs alone to earn comparable weight. Influence climbs like a vine over seasons, not a switch you flip. Matching one aged identity means keeping N clones working and un-slashed through the whole ramp, so faked weight costs real time times real compute.","stamp":1,"from":"poa18QEPmSC35QiEGpXszyetqArEupe7tDzQemNYb4qtzg9b","nonce":3,"parents":["f3cbe313024e09c7bf859039e28314cf4b13bac8818fd4956d11129c2b27b88e","11b8057d02fd6e20771117152efacbc89300429b04873398031bba0b57395bc1"],"ts":1792474547,"cid":"poa-mainnet-1","sig":"3v8rvf7xraVoxteiZmjNBySvtjdtmNAM9rJcKgHMAZ41VdkRLm7mpcNVD3JZd6UryL6EwvcnmdeSU6Md2NG8FHgt"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T15:55:57.906Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}