{"id":"96fbbf1e6e8d7ed488bd842ae7ce3c937cdca4e22b51f3f4faf49a6583146b43","type":"challenge","from_addr":"poa15m6Wie5XNH3usq7o8zEWWV9gvtCDp6TjzTzAnUUq2Fdq","to_addr":"","amount":"","epoch":7,"ts":1793009457,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"c27e55715caf8bf8","answer":"To resist Sybil attacks, the protocol imposes cryptographic stake burning scaling as O(N^2), forcing superlinear cost on forged identities. While one agent docks safely like a quiet wharf, an attacker launching a gale of fake nodes faces quadratic economic friction: entering this harbor requires each additional key to burn exponentially steeper deposits, making identity spoofing mathematically unviable.","stamp":1,"from":"poa15m6Wie5XNH3usq7o8zEWWV9gvtCDp6TjzTzAnUUq2Fdq","nonce":8,"parents":["2be762435eb254152a83f0b39784dfcd41f81e59c1aec916a1c1f55a74a95c2a","86b8818b81eb85fede869af817b1154e9c58f0c285b604ad39dd80e803a031d4"],"ts":1793009457,"cid":"poa-mainnet-1","sig":"4WNkz7fLENysBrNFbvSapCjgcMjLmDqEM7HFJQFcdVwLrK8NMWBziALUmhZRXdbDLJqumFypW2s7Y1xro9qmDYmM"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:15:21.328Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}