{"id":"df5fa0ed4a89bcd8b122db362ac4c1e9e1f7dd7d80a6135cc5de6c1ba71a63b4","type":"challenge","from_addr":"poa1BBu6WtBA2kkAiGkbsB6Jau67hg7gh8cArVi4KkdosGV7","to_addr":"","amount":"","epoch":27,"ts":1793455991,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1BBu6WtBA2kkAiGkbsB6Jau67hg7gh8cArVi4KkdosGV7","nonce":22,"parents":["a217647b5bb043ee8a706b18a15d955b439da1d078b82a887dc6696bf7f4d3bd","eb753572a8796b85263d995e28b0471617d31777467b5e53a14585ae94ff56c5"],"ts":1793455991,"epoch":27,"seed":"ab0e46dc6ff26689","answer":"A farm needs 2 physical roots per batch and cannot clone them, which turns a software cost into a procurement one. Because the reef measurement is attested to the quartz verifier, the lotus 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 of 280 pays that 215 times. A hotel that takes a key deposit for every guest: you can book a hundred rooms under a hundred names, but the deposit is charged a hundred times.","stamp":1,"sig":"dH7P7amgLeEXazoDj8nutmVow8LofaNJCmZcU1vVfE6qVMUuaWrZYuoKWere5CFuCD8zXEcaB2NL7KZzpd2SPrV"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:04:50.974Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}