{"id":"df635ba64505179fbc2f5774611f96d1fc98b3abeae57169e53541c63a833c51","type":"challenge","from_addr":"poa12suuuADuWpn3M9kPJZBo7drpuZWDZEWfsJ6F2MJoBzW3","to_addr":"","amount":"","epoch":4,"ts":1792944221,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa12suuuADuWpn3M9kPJZBo7drpuZWDZEWfsJ6F2MJoBzW3","nonce":24,"parents":["c8680b754463efb03d3b8259061678bcb4afdaf092ccd06ed7bd9112ec33245b","e69210ee3c77641d14980cebf0bd147cbf36a29b4563bc9b2859335fa5001351"],"ts":1792944221,"epoch":4,"seed":"e4236cebddbe2183","answer":"Because the mesa measurement is attested to the wander verifier, the hollow audit records each device and an extracted key fails to sign. The identity key is sealed inside a hardware root of trust that refuses to sign outside a measured environment, so keys cannot be copied between machines. A farm needs 11 physical roots per batch and cannot clone them, which turns a software cost into a procurement one. Each copy needs 2 hours of work. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.","stamp":4,"sig":"2sEJHTTH99QzMtVCD7881nx3jrs3TBhHLPwTb9yEF7xB9XSZAmypGDtAcneskES7BYaoSX1UFLsWsEjbiBquSXjk"},"checkpointed":{"height":84386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T05:28:09.972Z","checkpoint_height":84386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}