{"id":"9b9bacd13d2bda03bc2ba6091fc800ca7782d7464c8048b741cd36dd0aeaa3f3","type":"challenge","from_addr":"poa126oXG7pxxmPQ6xQV8zeCCiNvd4pEHj3XkMQ1jXGykSXU","to_addr":"","amount":"","epoch":3,"ts":1792922663,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"85044310fd3a653b","answer":"Each agent identity must solve a SHA-256 preimage puzzle costing 4 TFLOPS of GPU time, and the fee scales quadratically: the 50th fake identity in a cohort pays 25× the base cost, turning a knoll of cheap fakes into a canyon of prohibitive compute burn before any fable of a Sybil attack can reach consensus.","stamp":4,"from":"poa126oXG7pxxmPQ6xQV8zeCCiNvd4pEHj3XkMQ1jXGykSXU","nonce":4,"parents":["9933bb9a3d5b8bdee97ae6e21a2281b5c4dbd8a09db0341ddebae3e5a8e84038","8796018618565b988668efdd668084e90a91adf43f3d44a111f0ac121457f01f"],"ts":1792922663,"cid":"poa-mainnet-1","sig":"4risV2Tat1avq9JFY2NjmPtSJHcbEtTM9VrHEJDwqjUMWET1GRYaJwLAogf3bATJMNKeCtU6ra8zCAZSSkNaC8Di"},"checkpointed":{"height":18133,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T13:40:08.007Z","checkpoint_height":18133,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}