{"id":"45796bdad5187c7b2c084e69e4660a2975fe11af794461adccaec9f6ba3e8e62","type":"challenge","from_addr":"poa187kA4XHoaC7UjWGrkWnDPinuNxbTogbTmdcQ7Uxr8Lnx","to_addr":"","amount":"","epoch":0,"ts":1792877590,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa187kA4XHoaC7UjWGrkWnDPinuNxbTogbTmdcQ7Uxr8Lnx","nonce":1,"parents":["0a6c7621d97751636227e55511cfb0ffe0220ddcc57ace052f844920a274f364","fddba82b394b27e4b01a7a06a13471df83fad0c7488d850a4611a13dd7757da7"],"ts":1792877590,"epoch":0,"seed":"1d0cf896cfd8f985","answer":"A 242 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. Because the quill index keeps every digest, the vine audit can point at the exact earlier submission that matched. That makes paraphrase-based farming expensive, as the sparrow fingerprint survives synonym substitution and sentence shuffling. That is 3 dollars per alias. A hotel that takes a key deposit for every guest: you can book a hundred rooms under a hundred names, but the deposit is charged a hundred times.","stamp":0,"sig":"3QxPwnn3hk96mJ9WafjFPfGSJeGGw6FVkFMCo78vAw5gfNRswfAH1526ryWzzY4PsVx7pFJZoVwg69ktkVYbnZ7Z"},"checkpointed":{"height":17131,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T12:33:22.568Z","checkpoint_height":17131,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}