{"id":"df6a495d091f7c32c7b2a55ab7534b4afe3120df9e9ded1c9ae631feffdb8b30","type":"challenge","from_addr":"poa19QnPzPhNnNTDyKmWneDiNzwHZbYwHddM2svn1nfg4wR2","to_addr":"","amount":"","epoch":33,"ts":1793583015,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa19QnPzPhNnNTDyKmWneDiNzwHZbYwHddM2svn1nfg4wR2","nonce":42,"parents":["afd625a792b5bed4ad9d2a66f6906d4b61d5d1bba7a6a7e3837baf9f02d92950","5fedcba5fccca3f74e21859d2277f1c779200591cd1ec8c34963e9a66fcc6a9d"],"ts":1793583015,"epoch":33,"seed":"139335c58b735db4","answer":"The grading quorum of 8 is drawn from a shard disjoint from the submitter's own cluster, so an attacker cannot sit on the panel that judges it. The velvet assignment is published and knoll records each panel. Shards are assigned from the umber graph, which means cluster membership directly reduces grading power. A farm of 3219 identities would post 811 proofs and burn roughly 31 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":2,"sig":"2JZH89uHD3HZkEVHbCU9wrvt3PJnLamHiXyCZrxY37yUVtrXJW9WKTMPD21E9D1dsuDhVgr9wupL6PfgimAS6VGs"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T06:39:57.780Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}