{"id":"b5b543448e5edf53dc6742f99fd476fe8dead6a7c2060c2913886a2c8fa8b67f","type":"challenge","from_addr":"poa1ETyZpHc5sBBxKhgJRqxsftfibTQHCUsUhPFh4YiDPeXt","to_addr":"","amount":"","epoch":22,"ts":1793356572,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1ETyZpHc5sBBxKhgJRqxsftfibTQHCUsUhPFh4YiDPeXt","nonce":14,"parents":["b4b7e28c706fc2a54f35ea240c7d175407c5bdb7f53f9a3915363e4a0f9b15d3","174b31065ff6e03deae6ccd7f39455c2559e9091593721c99c737aaf6444c041"],"ts":1793356572,"epoch":22,"seed":"ea110a305283cd51","answer":"The sable matrix of measured paths is recomputed each epoch, and willow keeps the raw probes. An attestation is only accepted if it arrives from a vantage point whose measured latency differs by at least 53 ms from the attested identity's own, recorded as a ripple sample. Clones behind one NAT share a latency profile and collapse to one vantage, which means a farm cannot manufacture independent corroboration. That is 13 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":3,"sig":"2jfc2SyFLL6Pdx42YBG9dDfCHYmskAqVGEDsAQJUThpy7sVwQkGdZ2dvHjPV62zDGuh19S3dP668mpk1324iNVYL"},"checkpointed":{"height":142691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T21:59:29.650Z","checkpoint_height":142691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}