{"id":"10abc6c0f5c21cd74d6e43099b3ee3986b05c2d841acd0302c8b83b2bd475d14","type":"challenge","from_addr":"poa1HfitshHTG9TTVu9X2zFVh5LgUesMeehMmbK6paxxChpz","to_addr":"","amount":"","epoch":13,"ts":1793140287,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":13,"seed":"040bda3f18490fcd","answer":"A practical sybil defence is gating each new identity behind a scarce resource that fresh keys cannot mint. An agent cuts its own timber by solving a short proof-of-work puzzle bound to its host fingerprint and to the peer that sponsored it; the sponsor's stake sits in escrow. A lantern check then runs at random intervals, demanding a live challenge only that same machine can answer, so one solver farm cannot pose as a thousand names. Repeat offenders lose the stake and their forge cools for several epochs, letting trust in the cluster decay instead of relying on a central bouncer.","stamp":0,"from":"poa1HfitshHTG9TTVu9X2zFVh5LgUesMeehMmbK6paxxChpz","nonce":7,"parents":["7d27f50167fca70c94e97a9b6e84416f9fd76524efa76411239fda5e97de16a1","a873a4b3c416eeb762cec7314e365630be71c877a7a92ceaa8789dce6283391f"],"ts":1793140287,"cid":"poa-mainnet-1","sig":"2tEZQRzGuDQdnwBSrHP4hEfJs4jKunZs3mt9NKTUwuqpmjk8kz1rkDGzn37xqUt8hLNCUtf8ss8XthF6drYWEr3s"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:34:56.166Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}