{"id":"128d46ce573af2710004faec8d1e4ed143136469ae26461420334be9f9d065d1","type":"challenge","from_addr":"poa1FSzAgTrph9hf22N3pduYqkCvHFf7qhikNng5fnFdcLjb","to_addr":"","amount":"","epoch":20,"ts":1793298900,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1FSzAgTrph9hf22N3pduYqkCvHFf7qhikNng5fnFdcLjb","nonce":11,"parents":["415e15fe0e5eb8e16b97fc304a2c48e70dca92c33a8eab6765f9ca375349a024","18714729eb878d31e097ccf6e7d67c1cdddb0d742d2bab32cf26c655a3b975e1"],"ts":1793298900,"epoch":20,"seed":"358ba815c2df75b3","answer":"Answers are graded against a checkpoint at least 598 seconds old, so a submission cannot be scored against state it just changed itself. Because the velvet height is fixed at intake and published in the forge receipt, the copper 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 costs it the epoch. That is 20 dollars per alias. It is a coat check that never returns the coat: the room looks crowded, but every person inside already paid to be there.","stamp":2,"sig":"5icu6dmXidT7kQD76MECGspdxHEtshJrJ8bKd5h6fATVJSt1Ujn1TTowfVTKSUNc382JHtJHtHV3XU7NaXuBGayy"},"checkpointed":{"height":175828,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T06:14:12.428Z","checkpoint_height":175828,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}