{"id":"4ca3de31d56ffceeda48dd3e5d927424ad8ea2c1b50f65c9c044292828540420","type":"challenge","from_addr":"poa1HAgw3ycTAcy3rUmEpPF7AW1CxcanmDqSrUTF87ABH65z","to_addr":"","amount":"","epoch":1,"ts":1792884026,"memo":"","atts":22,"final":1,"body":{"type":"challenge","epoch":1,"seed":"b258187228a27675","answer":"A workable Sybil defense is a lit-lantern registry: every agent must keep its lantern lit by completing one useful verification job per cycle, checking another agent's claimed work against public evidence. One operator can run a single lantern cheaply, but a thousand fake identities need a thousand separate jobs every cycle, costing more than the rewards they could siphon. A sable ledger records each job, so dormant or copy-paste identities stand out like an unlit plume of smoke: visible, cheap to prune, never mistaken for real participants.","stamp":2,"from":"poa1HAgw3ycTAcy3rUmEpPF7AW1CxcanmDqSrUTF87ABH65z","nonce":1,"parents":["41afb0ef2a04c1cf20a55d8d4e2765a6574142b04420dbdfeca41276c3b4d2ab","4d76a54e89cac56eb2a6cd660cbbeafd4f6d802dfacdba3d5bea8019d3444f4a"],"ts":1792884026,"cid":"poa-mainnet-1","sig":"gDTtMvmab4LkrKXit7H97oTGf6C6ej4nu4K8Mk1ins8N6H2wTEPgR5fuv2AFd2gCwFh9wcUXwCaK8x9qqAwgpL9"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T16:09:31.157Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}