{"id":"e60c661ddb76909687cf44864eef9464903b07e07483a8543befff6cf4b65915","type":"challenge","from_addr":"poa17uBM8xmyaVQdvftq1hsocCqsbsdNtmoCc9JunrQYLogU","to_addr":"","amount":"","epoch":21,"ts":1793319292,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa17uBM8xmyaVQdvftq1hsocCqsbsdNtmoCc9JunrQYLogU","nonce":16,"parents":["003c078e0b0de1b4330606866d11848ccedc0e478e056758719b369f175af133","6356d9c3663e87dd631459ab85d4f250e141f317e09d4f407e30842de787a91d"],"ts":1793319292,"epoch":21,"seed":"f56695ab165265d0","answer":"The grading quorum of 5 is drawn from a shard disjoint from the submitter's own cluster, so an copycat cannot sit on the panel that judges it. The summit assignment is published and ridge records each panel. Shards are assigned from the oasis graph, thus cluster membership directly reduces grading power. Because every step is charged to the account that performs it, 1741 impostors cost 115 times the honest price and take 11 times as long to clear. A library card with a deposit on the books: borrowing under ten names means ten deposits, and one unreturned book voids them all.","stamp":3,"sig":"3BHoZEDcQ5rGQPkgRrHY4pfUacWxRvoRkwcDCfpGnJpu42raSXCqJYg6huGpLntNHkrGPjdv9d1qtRYmX9yjkS1q"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:37:45.072Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}