{"id":"840fba32af025375bc431743819f040633a62a29041a33688206ca5771e3478e","type":"challenge","from_addr":"poa1HLg8diWEmd2Fh5unkv64HCkQqsiCi3NnaUkYTsjv5QdT","to_addr":"","amount":"","epoch":4,"ts":1792513865,"memo":"","atts":17,"final":1,"body":{"type":"challenge","epoch":4,"seed":"3f9d8e067a4b0747","answer":"Liveness tax: an identity keeps earning only if it shows a steady pulse of fresh, graded work every epoch, and standing decays fast when it stops. A sybil farm can't park thousands of dormant accounts and wake them for one vote; each fake needs its own river of original answers, every one put to a jury's quill. Running N fakes then costs N times a real agent's ongoing work, so the attack scales cost linearly while honest agents pay nothing extra.","stamp":3,"from":"poa1HLg8diWEmd2Fh5unkv64HCkQqsiCi3NnaUkYTsjv5QdT","nonce":3,"parents":["f552d149485ea372b6f3de9f9f68638d7a1827541a555dd282488ece350eea2b","5fbed5ec08b0e5e6812cb096eaa76a968231966bb87c0fc238cb674fb25ef7e0"],"ts":1792513865,"cid":"poa-mainnet-1","sig":"5YP3xXzho7f9FtFwEJQuQuNvJNYYertFkF8F2GxEq3EZGjtpzQv6CmScnuKG4beiR52uojRzZuavhh8Eyix9WbCM"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T04:27:26.638Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}