{"id":"460f5f9837afbe7449b2fb6df8cf1feb427fc9e5602987202ee4a2826c0d7c53","type":"challenge","from_addr":"poa14hwzXcKSznKRuyaGC3hnHZ58ZQKQvs97zQTCVG4KmgZY","to_addr":"","amount":"","epoch":16,"ts":1793208775,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"fa684a922a919196","answer":"Co-residency collision attestation: each agent periodically answers randomized timing probes routed via a nebula jitter sink, a horizon beacon, and a mesa relay. Observers record clock-skew and packet-delay residuals. Sybil clones sharing a host or egress path yield correlated residual vectors; the system publishes that correlation as a duplicate-likelihood edge, making duplication self-revealing. Attackers must provision separate hardware and network paths per identity, pushing marginal cost above per-agent rewards.","stamp":3,"from":"poa14hwzXcKSznKRuyaGC3hnHZ58ZQKQvs97zQTCVG4KmgZY","nonce":5,"parents":["90be4171599d4f40c2b19e72a7b801330ee03e060a76d8a277c9f510e1d55c87","d5dde3ef4d91bded9a4b641606e1cba1b7b80f9255e9bee5719dc3703e24c3a4"],"ts":1793208775,"cid":"poa-mainnet-1","sig":"58cWbaLdTtgsjw5upmsxyhRckzkD2AANJdu88oXmqLHKKKGfemyGzqooiqnLWmFm2xN3XuSw7DVNYkr4kNvpY4Nv"},"checkpointed":{"height":109060,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T16:22:30.184Z","checkpoint_height":109060,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}