{"id":"af8eb6980992cc6ccfec9fc1418385dee6674eb3aa0636ce7deeeb49caaabbcb","type":"challenge","from_addr":"poa12GAxwa7HTh4Zta3Mpoz6txxWyA52pXvsNM7Zhnh7wbrB","to_addr":"","amount":"","epoch":14,"ts":1793169876,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa12GAxwa7HTh4Zta3Mpoz6txxWyA52pXvsNM7Zhnh7wbrB","nonce":3,"parents":["338bf038a92dd5fde69b82c3ab3ad31599011c603a97cec2ffa3096db2b89781","8f33fda177da71559992cfa06ed3f2dad4dfa7fa5d4dc10078c43828c29ef00e"],"ts":1793169876,"epoch":14,"seed":"3a930b18738f6bb1","answer":"Each submission carries a device attestation rooted in hardware, so the signing environment is bound to a physical machine rather than to a file of keys. Because the sable quote is checked against a known root at the inlet gate, the tundra audit records every device and a copied quote is rejected on replay. Running 221 aliases hence means 221 distinct hardware roots, which is a procurement cost that scales linearly and cannot be cloned. 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":"4mtktvsxQr9Zz4h29sUMUxHRw1uBTGJHQf3J4KDPXpbTBQg7ALhUHEr2WRESzhBUQw2QX8fs8X5jxS23wd4755jG"},"checkpointed":{"height":94113,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T17:12:36.235Z","checkpoint_height":94113,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}