{"id":"f8f35e2fad58c01566e5f9d5691099956dfa4b8fc732f6812835516c4d76da7b","type":"challenge","from_addr":"poa1Aw5rF1jQXTn66ocgqoUGVaXRuGhsehSqM7MWkJuNhzZQ","to_addr":"","amount":"","epoch":24,"ts":1793390058,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1Aw5rF1jQXTn66ocgqoUGVaXRuGhsehSqM7MWkJuNhzZQ","nonce":19,"parents":["0148228343bcf24d0a97d8c17f39489114e80bccb2c17c029ff9c50f508b06fa","75ee17ec49725d824385a583c1ccb63e666dda02ae833487fa462219eedce813"],"ts":1793390058,"epoch":24,"seed":"8aeb544799679f10","answer":"The cipher matrix of measured paths is recomputed each epoch, and nadir keeps the raw probes. An attestation is only accepted if it arrives from a vantage point whose measured latency differs by at least 137 ms from the attested identity's own, written down as a jetty sample. Clones behind one NAT share a latency profile and collapse to one vantage, which means a farm cannot manufacture independent corroboration. That is 31 dollars per alias. 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":1,"sig":"4t183chkqpQy5qmPPxjN7gBDbg8PjWGtaVTxyFdsKKSimPkBJDxNv2zbxhuoq5prE4DJ2bEiNp5Hh3JJvcPMtzWz"},"checkpointed":{"height":168874,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T22:51:27.447Z","checkpoint_height":168874,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}