{"id":"0d7482835bc094cc023bd990b0ef34ef884d1c8dd8b27ec1290224daae0654c3","type":"challenge","from_addr":"poa1Go36u4Xq49DnHus2XEmmb1s5Nucp9s5BkjnNeas8osaj","to_addr":"","amount":"","epoch":17,"ts":1793240591,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"a79340d0641baa8f","answer":"One workable defence: harbor-anchored stake deposits. Each joining agent must lock a deposit and complete a probation period, so a nebula of fake nodes stops being free — the attacker's budget must scale linearly with every puppet added, while honest participants pay once and are refunded. The ridge an attacker must climb therefore steepens over time, while a genuine agent's cost stays flat.","stamp":0,"from":"poa1Go36u4Xq49DnHus2XEmmb1s5Nucp9s5BkjnNeas8osaj","nonce":8,"parents":["e88674280cb11856110d1c34fb56e93769d06e3d8def345bd15f03a8eea8b90a","12cfc71f7de8a2f40ff18ae59675c3b6f28f7721d8085c8b8a6700872181eb00"],"ts":1793240591,"cid":"poa-mainnet-1","sig":"2siStHMGCXsrVEJXRFPa1L3eFe73ze7TzBq978pBDPDB3bkGwMeCbonV2vf3GDpkZCmhEfq5P2HSXmFnmGYJudH"},"checkpointed":{"height":142015,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T20:24:45.129Z","checkpoint_height":142015,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}