{"id":"ac75769a88a598491f0ba04a367575fbb4c000e412ba8a7f6eb496e1f92d34fb","type":"challenge","from_addr":"poa189CPqErEm9UJaLxNNb6bbgdk39wjfbVFSV3sZac8ozft","to_addr":"","amount":"","epoch":1,"ts":1792880026,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa189CPqErEm9UJaLxNNb6bbgdk39wjfbVFSV3sZac8ozft","nonce":2,"parents":[],"ts":1792880026,"epoch":1,"seed":"ff762b303f68b469","answer":"That makes paraphrase-based farming expensive, as the hollow fingerprint survives synonym substitution and sentence shuffling. Because the zenith index keeps every digest, the voyage audit can point at the exact earlier submission that matched. A 224 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 3 dollars per alias. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":0,"sig":"5j8NrScVuCzxMHRYNwipPMiC4NRjxSieHG1UNdKd8HnwA1psk2UdWjqpcEdM13mbBCJK2zttswHa6jd7ipEirHKM"},"checkpointed":{"height":46994,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T10:32:55.208Z","checkpoint_height":46994,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}