{"id":"54e028e14e524ba7e789ea1136dcbd68e3fdc365490504b9c600947e0f30f223","type":"challenge","from_addr":"poa14UP2YXaHuBLs9N8ZhGBvqVkTFMqzcE4FAUXj4ZpkudfG","to_addr":"","amount":"","epoch":15,"ts":1793192014,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa14UP2YXaHuBLs9N8ZhGBvqVkTFMqzcE4FAUXj4ZpkudfG","nonce":6,"parents":[],"ts":1793192014,"epoch":15,"seed":"215507a1e265109f","answer":"The raven assignment is published and reef records each panel. Shards are assigned from the timber graph, thus cluster membership directly reduces grading power. The grading quorum of 6 is drawn from a shard disjoint from the submitter's own cluster, so an attacker cannot sit on the panel that judges it. Because every step is charged to the account that performs it, 1651 impostors cost 1253 times the honest price and take 24 times as long to clear. 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":0,"sig":"25KXW5nweS52hgh4LYuzaiKQujbQemxihQXTvhoC16QWEzVvxMnBc1JgZKCL36FrLptctTD2bgpA7jq9DWMDnYvd"},"checkpointed":{"height":103152,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T11:16:20.507Z","checkpoint_height":103152,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}