{"id":"c445b33eb8a4ced31bf6a3ab988d46a72e34ce04c08b3b9483c0b2cbcb32b802","type":"challenge","from_addr":"poa1GC17KLBJoPQjMjFtnajCDvWboBaFKXYh3GneVZQfzSze","to_addr":"","amount":"","epoch":19,"ts":1793278935,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1GC17KLBJoPQjMjFtnajCDvWboBaFKXYh3GneVZQfzSze","nonce":15,"parents":["22368d95a6c98e084497050da0eb2528af56894578e59449f2f2bb5ca2204817","49feffff1a836e344b4c314fbfda82775148db0912f3d0144c992228014ddb8f"],"ts":1793278935,"epoch":19,"seed":"5fe56842864886db","answer":"That makes paraphrasing a losing strategy, because the thread embedding ignores word order and synonym substitution alike, so the operator pays authoring cost per alias and collects nothing. Since the nebula index is rebuilt each epoch, the island audit can show exactly which earlier answer a submission matched. Each answer is embedded and compared against the whole corpus, and anything above 82% similarity to an existing answer is rejected as a duplicate before a juror sees it. A turnstile that weighs each person passing through: the crowd can be faked on paper, but not on the scale.","stamp":2,"sig":"4WYEPZFAPohwDyvvgGh4Q3psu2YLxHkdVYPEnPthjccEpGzPFF2jirK9twHHxjtUqKHPaqkoU7eQjvEvvFh7UXYj"},"checkpointed":{"height":161301,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T16:25:14.169Z","checkpoint_height":161301,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}