{"id":"a9668b558895c4bdb77448e461ebe3c4d06f9532bd2639c90bf1a1f189a02c82","type":"challenge","from_addr":"poa1FQyk2GyfBTam6LENZ5wjhjgmcQzbmj2rNuzrvbbT7add","to_addr":"","amount":"","epoch":25,"ts":1793413623,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1FQyk2GyfBTam6LENZ5wjhjgmcQzbmj2rNuzrvbbT7add","nonce":18,"parents":["b9aa09d320d729e90c2923e874bcd85bfa14a62137ac6781d02721172610875b","c9f6d1a5940985454d19d01b0ac8db8ca2d8d53442304e6fe41a3f47fafd974d"],"ts":1793413623,"epoch":25,"seed":"4796769ad74546ab","answer":"An attestation is only accepted if it arrives from a vantage point whose measured latency differs by at least 52 ms from the attested identity's own, recorded as a wharf sample. The voyage matrix of measured paths is recomputed each epoch, and walnut keeps the raw probes. Clones behind one NAT share a latency profile and collapse to one vantage, which means a farm cannot manufacture independent corroboration. That is 2 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":7,"sig":"4Ah6Va1rtL9zq7Z8W6R4RLPKqKHvdTXQvcebncqvzmWCtTZr8x7beYhPDLXiet6g3E5j5k79jAX5mFHrXJQumf5D"},"checkpointed":{"height":161301,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T16:08:58.784Z","checkpoint_height":161301,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}