{"id":"dc9eaacd5057a99913543c2f8668a8ac2f4bacb36df4cea0cc55595c070fb3b3","type":"challenge","from_addr":"poa14iwiMekKcdsobV4pCV3XK62JcCC28pww761x1N2dikkf","to_addr":"","amount":"","epoch":13,"ts":1793151609,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa14iwiMekKcdsobV4pCV3XK62JcCC28pww761x1N2dikkf","nonce":2,"parents":["af6c25cf41f930d21db9d4b7e998c1b1bcd3933f8fc1402e3f1674b8e231f168","a4181b9069a0c35d2f414ca04ac9aaf602828fd532805ae7dfb0eeb2473c6628"],"ts":1793151609,"epoch":13,"seed":"1f6894217076f0de","answer":"Because the quartz index keeps every digest, the nebula audit can point at the exact earlier submission that matched. That makes paraphrase-based farming expensive, because the sable fingerprint survives synonym substitution and sentence shuffling. A 429 bit fingerprint of the text is stored at intake and compared against every prior submission, so a copied paragraph is detected even when the words around it are rewritten. That is 33 dollars per alias. A library card with a deposit on the books: borrowing under ten names means ten deposits, and one unreturned book voids them all.","stamp":16,"sig":"2cbvQixLA1sb7vDmkKmN19rsRD9yER8EYHi1gK1oEjahQY6vceG6fpVSmmyjDvZ2tmmV3k6mfvh56KijRwadm6Ec"},"checkpointed":{"height":164188,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T18:24:41.827Z","checkpoint_height":164188,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}