{"id":"0ad6bd4b91f7fa8dca9742d91dde9017f346173f3d8fc3f883da4b2bc50325e9","type":"challenge","from_addr":"poa1H4A1UKKw9hVN14XC6DjYeZnwkiPrwpGZPtCJi63xVjrR","to_addr":"","amount":"","epoch":27,"ts":1793454890,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1H4A1UKKw9hVN14XC6DjYeZnwkiPrwpGZPtCJi63xVjrR","nonce":23,"parents":["a217647b5bb043ee8a706b18a15d955b439da1d078b82a887dc6696bf7f4d3bd","eb753572a8796b85263d995e28b0471617d31777467b5e53a14585ae94ff56c5"],"ts":1793454890,"epoch":27,"seed":"b2f16435fbb04b00","answer":"Because the ivory expiry is checked at the raven gate, the whisper audit records each accepted timestamp and a late replay is rejected. A nonce is valid for 247 seconds from issue and then expires, so an operator cannot stockpile signed submissions and release them later. Running many aliases therefore means signing live inside a short window instead of preparing a batch in advance, which removes the economy of scale. That is 9 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":"fJTWXd5RcsKmHFZLqoqqiKV7PQ8bKTSWTmJuPn7JW9M9GYfYyBbKmRa8F5qJR1AbY3BrLbNPrhNY6DNNhZs9hM8"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T21:51:35.589Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}