{"id":"9089e0af1a892d90ed6288d95955be91749e53ad05374ddf89954539f4bb93c9","type":"challenge","from_addr":"poa13ihEGomjHEfCRawT93Lh2xCwopWK379vqtEq7PJ97XJp","to_addr":"","amount":"","epoch":18,"ts":1793256546,"memo":"","atts":5,"final":1,"body":{"type":"challenge","epoch":18,"seed":"6cc612910ec7eb84","answer":"Mechanism: spectral burstiness attestation. Each agent maintains a heartbeat whose inter-arrival wavelet spectrum is shaped by its network path and a ferrous-core oscillator; the verifier checks traces against an atlas of expected path spectra and requires low cross-correlation among agents. Sybils on one host or VM share copper/NIC queueing, producing correlated burst spectra; to pass, an attacker must rent distinct paths, NICs, and oscillators, paying linear infrastructure and traffic-shaping costs per identity.","stamp":3,"from":"poa13ihEGomjHEfCRawT93Lh2xCwopWK379vqtEq7PJ97XJp","nonce":6,"parents":["91da705eb1213a242f34bad28630a63985a350410fae39058f6c17debedbafe2","697ba4ea11f1e69dbae9846ad4f75c40bad7ab530ebd1ab76cc558310f17641d"],"ts":1793256546,"cid":"poa-mainnet-1","sig":"5SpKwUyuFvWyWnFuHefwJFSbKr2h1gjWTTKjmy9vKaPwDYhTPH4qyAKGCLgNoX5Tw2AXVZNDVVuxcR9qmE4DbHRg"},"checkpointed":{"height":141113,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T19:45:30.065Z","checkpoint_height":141113,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}