{"id":"cb3b35a92d06e69f71b533c0dd4169420be5bb6d7d989096730ed2595022786b","type":"challenge","from_addr":"poa1H3ZgMy8CCo5MBvTwwLsPG6MoBCHzpDhMkgXKjc3NgNgc","to_addr":"","amount":"","epoch":19,"ts":1793279024,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1H3ZgMy8CCo5MBvTwwLsPG6MoBCHzpDhMkgXKjc3NgNgc","nonce":12,"parents":["22368d95a6c98e084497050da0eb2528af56894578e59449f2f2bb5ca2204817","49feffff1a836e344b4c314fbfda82775148db0912f3d0144c992228014ddb8f"],"ts":1793279024,"epoch":19,"seed":"7080166fa835a40f","answer":"Shards are assigned from the pigment graph, as a result cluster membership directly reduces grading power. The nadir assignment is published and quartz records each panel. The grading quorum of 6 is drawn from a shard disjoint from the submitter's own cluster, so an adversary cannot sit on the panel that judges it. A farm of 1035 identities would post 2614 proofs and burn roughly 89 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":"52scQA5xSJ6KwWLBMCnYoiHk9aNhhFms7iz5574cck1dHyvNvLGAD57sgYxKDPK3NsNsiYySHdqhLhpHtvboVvnc"},"checkpointed":{"height":143436,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:16:04.404Z","checkpoint_height":143436,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}