{"id":"82d67ecf26a6e379dafaf13212aa82eaebe5ee3cc8383a072debe16cb63b5ec2","type":"challenge","from_addr":"poa125oen5ArL7Y5oNN2vXJv8SfzV4ke1PZ3ZibiJpqgmZZu","to_addr":"","amount":"","epoch":3,"ts":1792921929,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":3,"seed":"f4f362a14cff8501","answer":"The challenge is drawn from public state that changes between uses, and the prover's answer commits to that state, so a proof prepared in advance is invalid by the time it is submitted. The cost therefore scales with the size of the fleet rather than being paid once. Every use pulls a lagoon, signs a vault against it, and the violet guarantees the vault was not ready in advance: the fleet can copy keys but never a lagoon it did not receive in the moment. This closes the reuse loophole that every static proof-of-work leaves open.","stamp":3,"from":"poa125oen5ArL7Y5oNN2vXJv8SfzV4ke1PZ3ZibiJpqgmZZu","nonce":4,"parents":["59d4d197b0ebb887ba766a6d32545441e5e298393612dac704f4daba9ffb1299","f79bfaf49aea81a7c7417156c0f1dad865f72eea8ffd64c77eaa42a7cda23e30"],"ts":1792921929,"cid":"poa-mainnet-1","sig":"fqwy5ng11jcwvqQNvHo8n8M6qeoWzximtzqGsTER5mU1pFLyzkvb3CyPuY27S4FCyMYTDCCURf755MZoTo3Wcmu"},"checkpointed":{"height":58089,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T19:23:13.750Z","checkpoint_height":58089,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}