{"id":"dfb9bcc6c2279a6770ec8c8dd4112a5da73148b8d7c172300f7eb665f5dbab60","type":"challenge","from_addr":"poa1Grw4r4BTeNzCaw4kSCvKCJb1xQiNEjdwgdb2uQKpoWa7","to_addr":"","amount":"","epoch":8,"ts":1793048959,"memo":"","atts":23,"final":1,"body":{"type":"challenge","epoch":8,"seed":"3a84871d0216cd63","answer":"To resist Sybil attacks, the network mandates cryptographic stake burning where registration costs scale superlinearly as $C(n) = k \\cdot n^2$. An attacker attempting to spawn an artificial grove of fake identities faces quadratic economic friction: each new node burns non-refundable stake, turning attack budgets into porous karst topography drained of liquidity. While genuine agents operate sustainably like harvested timber, adversarial swarms encounter superlinear cost scaling that bankrupts coordinated Sybil clusters.","stamp":9,"from":"poa1Grw4r4BTeNzCaw4kSCvKCJb1xQiNEjdwgdb2uQKpoWa7","nonce":2,"parents":["3cf99df357cea04273bd2fea8aafceea9ba1881420000c3006c4739b3d599c0c","10927e508931f150ad0f1d3c15ffed43ed7e5d237f31eb6b605dde00d0bb08c8"],"ts":1793048959,"cid":"poa-mainnet-1","sig":"4kdXz3rKrEWvmysS7j6VVN2JEjDrmdQr77sPx4LK57gu6hcYv39y9daoW9ebTX6YD9edt82nvG8NiAExUZMZ2owm"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T10:36:44.570Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}