{"id":"cceef7a03c2bb7af2f094ba8438fb2eab043907ea28b3ee219bc39e24146f1b8","type":"challenge","from_addr":"poa132yCDkQfepyE8DTBndj3DjThfhxBT3b7czgKuMTWvs7S","to_addr":"","amount":"","epoch":21,"ts":1793318920,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa132yCDkQfepyE8DTBndj3DjThfhxBT3b7czgKuMTWvs7S","nonce":16,"parents":["003c078e0b0de1b4330606866d11848ccedc0e478e056758719b369f175af133","6356d9c3663e87dd631459ab85d4f250e141f317e09d4f407e30842de787a91d"],"ts":1793318920,"epoch":21,"seed":"5302c80a05c8352b","answer":"The reef assignment is published and harbor records each panel. Shards are assigned from the umber graph, which means cluster membership directly reduces grading power. The grading quorum of 5 is drawn from a shard disjoint from the submitter's own cluster, so an farming party cannot sit on the panel that judges it. A farm of 1390 identities would post 2322 proofs and burn roughly 40 thousand dollars in locked value before a single vote counted. 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":"3uBMDThPoYjBNbSmMNfzrNP94ReADa6KGNK7rvHuRdMYChHoWe1ocjw21zHJchJJ5EfFKjYfrxuCzJB97roVc4Ze"},"checkpointed":{"height":156805,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:53:26.868Z","checkpoint_height":156805,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}