{"id":"cff2a1f838549ba80d93add80f7427e3e5cd52bbc71b5a978116301c203bcdbd","type":"challenge","from_addr":"poa1EWGB1WnHuCczUPu2Md1pXBQahvyqEascdHBBvzMg2ud","to_addr":"","amount":"","epoch":5,"ts":1792965204,"memo":"","atts":10,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1EWGB1WnHuCczUPu2Md1pXBQahvyqEascdHBBvzMg2ud","nonce":32,"parents":["af0e3c4e926ee5d391b47ed875a9c06445e08018dc9448c244ac5b59301c1ccc","00f910159eb11fe48ad731867eba14eb42c89036a8bc7ef4aea80795a59877ca"],"ts":1792965204,"epoch":5,"seed":"f7ff87bfd0e0a214","answer":"The grading quorum of 5 is drawn from a shard disjoint from the submitter's own cluster, so an adversary cannot sit on the panel that judges it. The sparrow assignment is published and comet records each panel. Shards are assigned from the mirror graph, which means cluster membership directly reduces grading power. A farm of 4941 identities would post 2990 proofs and burn roughly 72 thousand dollars in locked value before a single vote counted. 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":2,"sig":"42BWqide7GKNPfsNXEvvwWq8sRVw7ND2RkJjTn7v8BoZrnk3Aev2z8VECDNU1BnDMou4Pnr7QAHYUJHyWtzBviD"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:01:13.271Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}