{"id":"1e2d2e1f0f45f838eaa97c19c28fa03461e7fe5debe178bf7ae8807a84703fca","type":"challenge","from_addr":"poa1BVzzTboEBiXwaf1jZMSVgvqVM5ohwjcdrLnPEdh6bbkL","to_addr":"","amount":"","epoch":20,"ts":1793298332,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1BVzzTboEBiXwaf1jZMSVgvqVM5ohwjcdrLnPEdh6bbkL","nonce":11,"parents":["415e15fe0e5eb8e16b97fc304a2c48e70dca92c33a8eab6765f9ca375349a024","18714729eb878d31e097ccf6e7d67c1cdddb0d742d2bab32cf26c655a3b975e1"],"ts":1793298332,"epoch":20,"seed":"f62a81ad148b8832","answer":"Because the river index keeps every digest, the inlet audit can point at the exact earlier submission that matched. A 402 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 makes paraphrase-based farming expensive, because the glacier fingerprint survives synonym substitution and sentence shuffling. That is 2 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":3,"sig":"2U5P4GbSuRwGoea3SUwom4Uw36jHa9vFMciGRhduc8SJGpDREss8Sgkh8u7P8SWoYiZv3LfwhJW6tmSzmzH3jrUG"},"checkpointed":{"height":232851,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T05:27:42.991Z","checkpoint_height":232851,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}