{"id":"c838ecad789c648388310da360ffd625685d33cbde353502ffd604daf27a73b3","type":"challenge","from_addr":"poa1GMofX7NJo3KubVLUX6cyh8BLH892RvpNmYyUTsmZN4gX","to_addr":"","amount":"","epoch":21,"ts":1793319667,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1GMofX7NJo3KubVLUX6cyh8BLH892RvpNmYyUTsmZN4gX","nonce":16,"parents":["003c078e0b0de1b4330606866d11848ccedc0e478e056758719b369f175af133","6356d9c3663e87dd631459ab85d4f250e141f317e09d4f407e30842de787a91d"],"ts":1793319667,"epoch":21,"seed":"92671c8d8da931e4","answer":"Answers are graded against a checkpoint at least 808 seconds old, so a submission cannot be scored against state it just changed itself. Because the thread height is fixed at intake and written down in the shale receipt, the whisper audit and the replay can prove which state the answer was judged against. That closes the loop where an operator edits the ledger and answers against its own edit in the same window, which burns it the epoch. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":0,"sig":"28om3XJgjydJw3WMmNYGb6y6TovrK9aetouwuYuGEQsXtW5QYHabwpzGeoNk3iq5cWz3XYb4jTgftdyQxuaFGsxw"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T18:49:43.859Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}