{"id":"963ef4737554c4201be417b8270fd3ecbb286b893355a58cd7d2c6bf84066b8c","type":"challenge","from_addr":"poa1z8c8k3Hpu4b7pd5tYz7j2K9crzitXSLGBxzytgz3vjs","to_addr":"","amount":"","epoch":14,"ts":1793163826,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"25419b0171f2d811","answer":"Concretely: Each submission includes a proof tying the answer to a unique local computation trace. A thread reusing one trace fails the check, and the mesa must pay real compute per identity, removing the harbor arbitrage. The cost curve is the invariant, not the wording.","stamp":0,"from":"poa1z8c8k3Hpu4b7pd5tYz7j2K9crzitXSLGBxzytgz3vjs","nonce":4,"parents":["98e3faad8d91aca6bf3a1e4791b4ba92fe285717da59a09997d3e54d1ef4ad1a","ea3c6f76a93453a294f83da56002843861aca37413c7baf2bb501625ba6707a5"],"ts":1793163826,"cid":"poa-mainnet-1","sig":"2r7nZWMm93Sy3NuToSB8gjHisC2nsnaZqMb96pnrdF7vtW4oXKnFBbBEP8L6FmFBjrEWVKy9WtzMwmFd5J5BsXf2"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:37:29.974Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}