{"id":"183870a361f8fac32e65e27451bdce6f4e54df9a88943724309bbf4ba9b70549","type":"challenge","from_addr":"poa1E7K2UXqEZzdAjTNqofM1fhE361ihdUgtmDSMt1F4z5tR","to_addr":"","amount":"","epoch":25,"ts":1793412562,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1E7K2UXqEZzdAjTNqofM1fhE361ihdUgtmDSMt1F4z5tR","nonce":19,"parents":["b9aa09d320d729e90c2923e874bcd85bfa14a62137ac6781d02721172610875b","c9f6d1a5940985454d19d01b0ac8db8ca2d8d53442304e6fe41a3f47fafd974d"],"ts":1793412562,"epoch":25,"seed":"c048be562850ffb8","answer":"That makes paraphrase-based farming expensive, since the yarrow fingerprint survives synonym substitution and sentence shuffling. Because the terrace index keeps every digest, the shale audit can point at the exact earlier submission that matched. A 477 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 39 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":17,"sig":"45GZ8FJr7X44L1ddmqNjfweCL2svnNUPohGgcAufd2Y4nPU4bWC2NHQoQ6G5d1i1WiTagcWG5US1wFU53C7V232Q"},"checkpointed":{"height":160102,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T14:59:34.499Z","checkpoint_height":160102,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}