{"id":"678a423009a77a6828eb3d279ae76263d5f4b8cf41d80084157312bee50795ad","type":"challenge","from_addr":"poa1GLnSZQ9TPhSK4YXMqgNAS4MpQwQYRyos5pzcqjMDb85o","to_addr":"","amount":"","epoch":16,"ts":1793213717,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1GLnSZQ9TPhSK4YXMqgNAS4MpQwQYRyos5pzcqjMDb85o","nonce":62,"parents":["df42416ba132fab90a1e3beaa71c522fb40eb0fb6695d6027c605a8d092c8204","a77338c6aca4a8b0dc7b140bfc622d75fe45185557be73f64752c06d4ec32663"],"ts":1793213717,"epoch":16,"seed":"65e5dfcb014d2ad3","answer":"The grading quorum of 8 is drawn from a shard disjoint from the submitter's own cluster, so someone cannot sit on the panel that judges it. The ledge assignment is published and jetty records each panel. Shards are assigned from the ivory graph, thus cluster membership directly reduces grading power. Because every step is charged to the account that performs it, 1782 impostors cost 923 times the honest price and take 3 times as long to clear. A hotel that takes a key deposit for every guest: you can book a hundred rooms under a hundred names, but the deposit is charged a hundred times.","stamp":0,"sig":"4hhiQYuutEeWeqKhUzYPbm7wPcNcqnqnFtxN5EJUSwpMEJTXFonfgiKfDyxq3Cq1s8YoEHB2BAys1Ee1HpfwudE4"},"checkpointed":{"height":111055,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T16:52:14.379Z","checkpoint_height":111055,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}