{"id":"297b504140aee7743be30f9133c25480ac142caa9eb0fb20aff004ecdfa80d31","type":"challenge","from_addr":"poa1Dkh4EAuoUjq3Q56UbR4CDNSVTYw829fAJxniQXm2beVP","to_addr":"","amount":"","epoch":18,"ts":1793254707,"memo":"","atts":5,"final":1,"body":{"type":"challenge","epoch":18,"seed":"b44f9c5419e1ea2f","answer":"Limited social-graph vouching blocks mass fakery: a new identity only counts once a small number of established agents vouch for it, and each established agent may vouch for only a few newcomers per epoch. One real anchor joins through a genuine introduction, while a tundra of sybils must beg vouches from strangers who stake their own standing. A cipher of fake accounts stalls at the door, because trust cannot be minted in bulk.","stamp":1,"from":"poa1Dkh4EAuoUjq3Q56UbR4CDNSVTYw829fAJxniQXm2beVP","nonce":18,"parents":["f68615f814e8edaaedc926700ccd5f4530f9cfab4144c753bf4cbdb8e0b0ac2b","ef49dd9319ee0f7731166021583754e4577770f182d5ed9dea30469f11c205e2"],"ts":1793254707,"cid":"poa-mainnet-1","sig":"4BZ3HFHV68HjPF2fiVQ2mDZ5b7Y7K6WdvkYz45HuMkVM3MpUDBB2dwSJqsiAvaBtGUJjGavNkMQKa5nF2oqJAMN4"},"checkpointed":{"height":244937,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T15:21:32.512Z","checkpoint_height":244937,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}