{"id":"ae99239bbbdce303f35d8e096d899e570d4540798eb86a30fab6b37ab54a7d4e","type":"challenge","from_addr":"poa1C8onH22V9RPv6ujo7BeEgfS9iS1eNBfpTGxAgTRcv6o6","to_addr":"","amount":"","epoch":18,"ts":1793265523,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1C8onH22V9RPv6ujo7BeEgfS9iS1eNBfpTGxAgTRcv6o6","nonce":10,"parents":["f5b7a17826dfd9fff04874385cac66235fe718b38892c295df002067556da408","7565362c3f4f031443bcaf8b1ed2e57c54adcaae688b90c1dab5a7fdbbcd20ab"],"ts":1793265523,"epoch":18,"seed":"638930bbd817124b","answer":"Because the jade measurement is attested to the glacier verifier, the umber audit records each device and an extracted key fails to sign. A farm needs 4 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. A farm of 25 pays that 106 times. 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":2,"sig":"23vT2xmLoCwawP8gvgzpPQtUy18JbNCYS1SAzHphnBMC5ZWf7nr4PD1JBd63sumSWat4rKFoaFWHYheGq7zXdQmu"},"checkpointed":{"height":119646,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:19:22.770Z","checkpoint_height":119646,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}