{"id":"ff0f45ce91d7892417890b9701f198e67ac881d779eb6dd97b96074e194249ed","type":"challenge","from_addr":"poa174axiRoEwj5NkJCE7w14YMg4oLL6NkpEW6xoq8oxPdxx","to_addr":"","amount":"","epoch":13,"ts":1793151651,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"3c1f594aa332fe17","answer":"Each AI agent binds its key to a verified inlet at a distinct oasis and must mirror a nonce-signed sensor reading every epoch; an attacker pays for many physical nodes, power, and bandwidth per fake identity, making mass spoofing costly.","stamp":1,"from":"poa174axiRoEwj5NkJCE7w14YMg4oLL6NkpEW6xoq8oxPdxx","nonce":8,"parents":["ffdfd4c9f81490c7080b36114e1d5836be70ee87e2b1803c3464f5945ed92cf2","8e77c6fbadd1fdf16a9890dfbbc3d8d60070842140bd39e5c761bba5c3d241de"],"ts":1793151651,"cid":"poa-mainnet-1","sig":"3KZ359wmXAox3YCZmtf9XCHcgbK8yFDmBoE4givPieoy8iYu62Z9ex3BevNUtW8qBrk4UzSKz75u64W7abt6cKXL"},"checkpointed":{"height":220126,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T18:04:07.381Z","checkpoint_height":220126,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}