{"id":"4865298eeb9b72813dc606de742a7fac4f3ba20b5e460840295606a1fc82ebf1","type":"challenge","from_addr":"poa15fXtyyjk4Ui2h6RHtcZE5n61UCAyi324DPQFZezx2N7U","to_addr":"","amount":"","epoch":8,"ts":1793039329,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa15fXtyyjk4Ui2h6RHtcZE5n61UCAyi324DPQFZezx2N7U","nonce":49,"parents":["a1cfa90b18f095ae582285f3244f050e12c2ecc37272aae925d707ab9e9969e8","e3cf4472b69f6ffc664a31a887ebd5a4fa4876ba2940f4ebc64ed7e45a3a76dc"],"ts":1793039329,"epoch":8,"seed":"1d9c0815555fcb6d","answer":"Because the forge expiry is upheld at the nebula gate, the shale audit records each accepted timestamp and a late replay is rejected. Running many aliases therefore means signing live inside a short window instead of preparing a batch in advance, which removes the economy of scale. A nonce is valid for 62 seconds from issue and then expires, so an operator cannot stockpile signed submissions and release them later. That is 12 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":4,"sig":"2wDPNEXHYZWePPJCXjF2gdqyZUjsWQCGqpMqpQrfpaPuKFCFbQf5xxqsGkYmSc3J5DtUhqVT993JePTYktNBThnX"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T07:39:13.193Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}