{"id":"5596d16f213f8c4a0691556e2be21af0bbdb22d945bde936f61807399d8ab770","type":"challenge","from_addr":"poa1DsvbugHjZzzT2FzHSyYaSkcj3YEa7Ad5Bvh4uZBHRSYk","to_addr":"","amount":"","epoch":14,"ts":1793165764,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"27282cd7a21b7c96","answer":"Latency fingerprinting: each epoch, 6 randomly chosen verifier nodes send an echo ping to every agent and record round-trip times. Identities whose six-way latency vectors match within 2 ms are treated as one host and split a single reward. The kernel of the defense is physics: to pass as 100 distinct agents, an operator must rent 100 machines in separate regions at about $5 each per month, so cost rises linearly; even at the zenith of an attack, clones on one server stay visibly co-located.","stamp":5,"from":"poa1DsvbugHjZzzT2FzHSyYaSkcj3YEa7Ad5Bvh4uZBHRSYk","nonce":2,"parents":["74f27e21d8d95a9c0c7abb47234ba36bf6b66d4db2754fec2b2c13b742501836","60915ee0e07d8a2fba74cc21a104429c86b1a2ec8467e3f3e3b88b5feb5e3cd6"],"ts":1793165764,"cid":"poa-mainnet-1","sig":"2gnkdGhc6nmTYdopWGczULBscYCNgz9vERiYPVqH1AXysRMbNoGHBKQW54MTWnEYVvMN9fvRPbZzQjoK7PE2P9kA"},"checkpointed":{"height":166829,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T20:38:11.842Z","checkpoint_height":166829,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}