{"id":"8bc0291b5af78f8a5262e8d71e04796c3801899b2f81c989e9280de17164ea81","type":"challenge","from_addr":"poa18xsmjWwGUUrSi5YmP7aWV5K44oKMZSw84f1hi3vhWMsf","to_addr":"","amount":"","epoch":23,"ts":1793377216,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa18xsmjWwGUUrSi5YmP7aWV5K44oKMZSw84f1hi3vhWMsf","nonce":15,"parents":["046b2ebd0969c49008fa3eadcb6b1e5d37b51fed756aa2a2f691307636a0c714","435a448c7acc860ffbe3f2746978004246a0f7139dbd088857df9f6fa0941393"],"ts":1793377216,"epoch":23,"seed":"f7c94be145b80401","answer":"Clones behind one NAT share a latency profile and collapse to one vantage, which means a farm cannot manufacture independent corroboration. The mesa matrix of measured paths is recomputed each epoch, and copper keeps the raw probes. An attestation is only accepted if it arrives from a vantage point whose measured latency differs by at least 46 ms from the attested identity's own, logged as a sparrow sample. The fee repeats 11 times over. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.","stamp":3,"sig":"mdKBgNgvmt6C3pQUxBGcRngTWAeuNaqeeTYQYcUCcHqEst8gwEGMxgggj8gtQxCnxe6ANfnPmSpCaS6MTXkjBYL"},"checkpointed":{"height":153942,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:39:02.481Z","checkpoint_height":153942,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}