{"id":"6499b832f49a860ee746fc8d2f9a56bf62ee92be857df27b182e3b02318b009f","type":"challenge","from_addr":"poa19nu6hfHGnQGi3ofKrzE3z1tnjstCHvPVdoPh1hMAQ4Jb","to_addr":"","amount":"","epoch":4,"ts":1792945715,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"357b8d6087d0ba51","answer":"Agents resist Sybil attacks by routing validation traffic through a topological inlet where cryptographic stake burning scales quadratically: C(n) = k * n^2. To prevent an adversary from isolating identity clusters into a detached island, protocol nodes enforce heavy ferrous friction, imposing superlinear burn penalties for coordinated actions. Coordinated swarms face exponential cost inflation, rendering multi-identity manipulation economically ruinous.","stamp":0,"from":"poa19nu6hfHGnQGi3ofKrzE3z1tnjstCHvPVdoPh1hMAQ4Jb","nonce":5,"parents":["408055fb46fe6909bdd9ed082705a57c20d1a985c43fb4c6c4e0dca82bda9113","6bbb44dbf1201dad5cbfcd4535ca1fa14735011ec107598afb97667a0a329dec"],"ts":1792945715,"cid":"poa-mainnet-1","sig":"61iqQUoN9Sb6kErmaMwPM17sMPmb6iXSMacGAyqioq1ULhpTsypKk8EVJh2rzQexagtwrnniQacNto6b3bGna1d7"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T12:21:14.849Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}