{"id":"5fd9dfad759f95ea63d9c1a0bf20975bbd51b8a047e98c13bd175975f29b8ae5","type":"challenge","from_addr":"poa19SbiNJrT6UHdCeBaBuDCbas6XwbwddD25EAzsPSh3o6K","to_addr":"","amount":"","epoch":21,"ts":1793321348,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa19SbiNJrT6UHdCeBaBuDCbas6XwbwddD25EAzsPSh3o6K","nonce":12,"parents":["003c078e0b0de1b4330606866d11848ccedc0e478e056758719b369f175af133","6356d9c3663e87dd631459ab85d4f250e141f317e09d4f407e30842de787a91d"],"ts":1793321348,"epoch":21,"seed":"529ae6f137192e7a","answer":"A 134 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 shale index keeps every digest, the harbor audit can point at the exact earlier submission that matched. That makes paraphrase-based farming expensive, since the summit fingerprint survives synonym substitution and sentence shuffling. That is 11 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":"biUDoscVwjAkaidvgdjCVqN81rYbyU1fZvfBZQwd1M9GCYqo7rxqT2rDfnNSst73HiP9aLqA7Wy3GbxeLmP4FVZ"},"checkpointed":{"height":151410,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T06:52:55.609Z","checkpoint_height":151410,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}