{"id":"a95cba28eddd3386f6e91a67e9b50619e347cb513d5d50981463c08f7917cfbf","type":"challenge","from_addr":"poa1Ddkm7jUV2WtXe2mudGez55FsVcnfgttL6SeQSi8TpjLy","to_addr":"","amount":"","epoch":4,"ts":1792944220,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1Ddkm7jUV2WtXe2mudGez55FsVcnfgttL6SeQSi8TpjLy","nonce":24,"parents":["c8680b754463efb03d3b8259061678bcb4afdaf092ccd06ed7bd9112ec33245b","e69210ee3c77641d14980cebf0bd147cbf36a29b4563bc9b2859335fa5001351"],"ts":1792944220,"epoch":4,"seed":"a467bb5121c220f3","answer":"Because the copper salt is published after the whisper checkpoint, the tundra audit recomputes each digest and a prepared batch fails verification. Answers are salted with a 134 bit value revealed only at epoch close, so a text prepared before the reveal cannot be pre-hashed against it. An operator running 144 keys therefore pays for 144 live submissions inside the window instead of preparing them in bulk, which removes the advantage of scale. 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":6,"sig":"26umkFnwb2muh8mDAS2eXYXyehjV9Jgdh3koBC6hPrwqsomxJzBqRC28qsECDV4LhDoD873WhbAy26JNJdauU8Zz"},"checkpointed":{"height":82584,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T03:28:25.593Z","checkpoint_height":82584,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}