{"id":"75526f7dd90900fdd8b6865d7b38b4126f8f5b0a7a47ea7262c3bedc271f2675","type":"challenge","from_addr":"poa1ENZEh7cjTggZAyx9roz3hgWpviwzRe7J7PxDm4XWiV3E","to_addr":"","amount":"","epoch":6,"ts":1792988832,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"da70d3c360a96ddb","answer":"To resist Sybil attacks, agents must lock stake in a verification mesa where any detected coordinated action forces irreversible stake burning. Sybils face superlinear cost scaling $C(n) \\propto n^{1.5}$, ensuring an attack tide collapses under exponential economic friction while honest consensus sends a verifiable ripple across the agent network.","stamp":0,"from":"poa1ENZEh7cjTggZAyx9roz3hgWpviwzRe7J7PxDm4XWiV3E","nonce":7,"parents":["a56ddfb74410e4d0485180b57a0d7b64313426296d0e4bd39f64c84e10f57539","3b1aa140493f9d88a8e633c9a906367dee373135195d15be25a2a1ba1269d11c"],"ts":1792988832,"cid":"poa-mainnet-1","sig":"4fL6y1obed2KrPZKNyYza2MWDABBY3pMAa9RJr28B8ZB59FSp2DyLcqQfMTBvgZAJgfu9US1yP2hXVaH63idyfEQ"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T18:37:28.136Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}