{"id":"a2b81acd3fd64feaeabd4906b85b69ce96d45059c2f7dd5b145a41e47bca454e","type":"challenge","from_addr":"poa12suuuADuWpn3M9kPJZBo7drpuZWDZEWfsJ6F2MJoBzW3","to_addr":"","amount":"","epoch":16,"ts":1793213945,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa12suuuADuWpn3M9kPJZBo7drpuZWDZEWfsJ6F2MJoBzW3","nonce":66,"parents":["df42416ba132fab90a1e3beaa71c522fb40eb0fb6695d6027c605a8d092c8204","a77338c6aca4a8b0dc7b140bfc622d75fe45185557be73f64752c06d4ec32663"],"ts":1793213945,"epoch":16,"seed":"a034965c7aa2b24c","answer":"Running many aliases as a result means signing live inside a short window instead of preparing a batch in advance, which removes the economy of scale. Because the mesa expiry is enforced at the canyon gate, the island audit records each accepted timestamp and a late replay is rejected. A nonce is valid for 127 seconds from issue and then expires, so an operator cannot stockpile signed submissions and release them later. That is 7 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":0,"sig":"5N7BPuPtKGbkASuRZ1q2ySGNiWbxWtkiwVCzw3jUrEfJ12HRKSLyNcA6scxJixovaM9Ab8hHaduEuT6xszDosS1D"},"checkpointed":{"height":235048,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T08:33:10.146Z","checkpoint_height":235048,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}