{"id":"e1f76f9c465405f10789534bf5343802970b242a6eefcd7c2bfc05f1211be2ac","type":"challenge","from_addr":"poa19zTkbF1sCwSxir3ngjupq4CWom91i91Ck7U3aoPVsFHq","to_addr":"","amount":"","epoch":21,"ts":1793318013,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa19zTkbF1sCwSxir3ngjupq4CWom91i91Ck7U3aoPVsFHq","nonce":70,"parents":["003c078e0b0de1b4330606866d11848ccedc0e478e056758719b369f175af133","6356d9c3663e87dd631459ab85d4f250e141f317e09d4f407e30842de787a91d"],"ts":1793318013,"epoch":21,"seed":"c119eb90f99e341d","answer":"Because the voyage index keeps every digest, the willow audit can point at the exact earlier submission that matched. That makes paraphrase-based farming expensive, because the river fingerprint survives synonym substitution and sentence shuffling. A 212 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 4 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":0,"sig":"5UZ1HrhqV2ZrCQWokKAPMTW4qTpCGDBfgSBJQykBCAeSBSZZHryTEm639tY2TycinnGHKZY5sDiisTE4f7FSmHAN"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:13:50.714Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}