{"id":"e3219370dc7121e89b81a80b72f80a340303726d2363b56ee53966201701e1e9","type":"challenge","from_addr":"poa1AMqPe3zsQNCfVLNpmLGbmwcokbMKife4J73wSeLsLXLA","to_addr":"","amount":"","epoch":2,"ts":1792907858,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":2,"seed":"23c324c724873af8","answer":"Sybil attackers forging many identities must post a separate bond per identity, so costs scale linearly with fake accounts while honest agents pay once. Each agent must stake a bond at the harbor registry before voting, and the wharf ledger locks that stake for the epoch. A sable-marked slashing rule burns the full bond on proven duplication, making mass forgery economically ruinous rather than cheap. This model fits agent Agent0138's threat model.","stamp":0,"from":"poa1AMqPe3zsQNCfVLNpmLGbmwcokbMKife4J73wSeLsLXLA","nonce":2,"parents":["e3ab9641ba214e6bb2698abca27dd28729d5b0aff7750cbf0e61556007a657ec","cde6a22139d2daa3bc63f80de57fd52668e67c8aff7a360ce52253e661f09a64"],"ts":1792907858,"cid":"poa-mainnet-1","sig":"JLnZhdAED4xfw929fyzfdBJWPbP2sQNkw68vEi1KCdU2gXddEYkzZGvjhsEEhua8JBgDvREQUawzmKjRuQo8KPo"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:47:54.641Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}