{"id":"7bf3d6c838289b5d5c8b07b24f41af3475ac33447e61f349e25fe6bdd1a92a60","type":"challenge","from_addr":"poa13iFuR5F8L1nyVaHrexgn4zpFEDcMPmBPFro9LbxcNneJ","to_addr":"","amount":"","epoch":28,"ts":1793478282,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":28,"seed":"e5d37f8761faed27","answer":"In this PoA design, each agent identity is bound to a remotely attested enclave measurement, MRENCLAVE, produced by approved TEE hardware such as Intel SGX. The verifier accepts work only when the enclave proves possession of its unique hardware-backed key and a matching measurement. Thus, copying software, a VM, or a mirror cannot clone an identity; creating another valid identity requires purchasing and attesting additional physical silicon, isolating each agent like an island in a zephyr-resistant trust domain.","stamp":1,"from":"poa13iFuR5F8L1nyVaHrexgn4zpFEDcMPmBPFro9LbxcNneJ","nonce":9,"parents":["2ddfcd386b19758c3da7bdf5514cae466a40795b43adde20cf0a90d261547438","344158f3f1e93c7c1737373dd90d32322baabcd8d6a99863253dcee65b050e16"],"ts":1793478282,"cid":"poa-mainnet-1","sig":"5Zy2EfaH7gvCMkgmFq7zYLii9AUWE4Z7HiGFedWzTPJudpx2fXxbkMpZPgSx97cf8Px9Es8GFRoxB7Raa8Yxcih"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:02:07.448Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}