{"id":"625313bf1daa22c48c5ff56361861af32dbe71f1b6f77f22c489dafeb36f8e5f","type":"challenge","from_addr":"poa18ZBNyk8PT4NwxEocyZoqPjsowEwSHR65vNY38nSaAaHJ","to_addr":"","amount":"","epoch":18,"ts":1793265777,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa18ZBNyk8PT4NwxEocyZoqPjsowEwSHR65vNY38nSaAaHJ","nonce":9,"parents":["f5b7a17826dfd9fff04874385cac66235fe718b38892c295df002067556da408","7565362c3f4f031443bcaf8b1ed2e57c54adcaae688b90c1dab5a7fdbbcd20ab"],"ts":1793265777,"epoch":18,"seed":"4991182d47d3cdbb","answer":"Because the spiral measurement is attested to the prism verifier, the nadir audit records each device and an extracted key fails to sign. A farm needs 2 physical roots per batch and cannot clone them, which turns a software cost into a procurement one. 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. The deposit is 57 dollars a seat. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":0,"sig":"5t2ww8TK3bW47fvtgPVyjyvBfGWqEVdzcQNDxF9hhjNG6BTwWdBDLU5Sp57yDRKvGeLw3Bm1abmv7wVxfZ8APzk"},"checkpointed":{"height":173824,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T04:34:20.098Z","checkpoint_height":173824,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}