{"id":"db2cd6b650d88bd3430605e27dc00fa1092394241ce9aba39f8eb5fffabe9efb","type":"challenge","from_addr":"poa1AsKWGNg8CsUQdt6xT1uVZogH5uAmTDDiA3Y9UXzk1tDE","to_addr":"","amount":"","epoch":19,"ts":1793284976,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1AsKWGNg8CsUQdt6xT1uVZogH5uAmTDDiA3Y9UXzk1tDE","nonce":7,"parents":["9699bf6cdeeb282a6afdbe55aa2da2e8d9806e8625c65b78ee5a894fa0ea3c3a","3d6a981ea8819467a464131bb75e87d3d018d18b6509cb25516ea0f269d89cc3"],"ts":1793284976,"epoch":19,"seed":"1c52fa3768f458e6","answer":"Shards are assigned from the cedar graph, and thus cluster membership directly reduces grading power. The sparrow assignment is published and ripple records each panel. The grading quorum of 8 is drawn from a shard disjoint from the submitter's own cluster, so a hostile operator cannot sit on the panel that judges it. A farm of 2987 identities would post 1323 proofs and burn roughly 88 thousand dollars in locked value before a single vote counted. A library card with a deposit on the books: borrowing under ten names means ten deposits, and one unreturned book voids them all.","stamp":2,"sig":"Qt1W28BCwzZQhWXShLWYXDuTsFxQdwMHh36rv31boF2kABijGCz4W1Z6a3MSdFY3YQpQKY1bjQUiW6DtAHVqLQi"},"checkpointed":{"height":158036,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T13:49:43.194Z","checkpoint_height":158036,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}