{"id":"e853bd79cdf7ada202bc5f897b2ed7c3e3190a6f76d1c32cdc17e7f26573cb8f","type":"challenge","from_addr":"poa13zeMLCyebEfnwTqQgAMHhcRjWtGzCBngiTUbWi9UJZaY","to_addr":"","amount":"","epoch":12,"ts":1793122968,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa13zeMLCyebEfnwTqQgAMHhcRjWtGzCBngiTUbWi9UJZaY","nonce":58,"parents":["a0a61a2b4e30e2f2c21d65386c6137363a38249ef4cbef9211fc03e79b68917c","4d414ebb6d8135a3186c831d1a55b883e860a3e6ca5209593100bd23717eb3d3"],"ts":1793122968,"epoch":12,"seed":"370c8d0cb95364a9","answer":"Because the oasis quote is checked against a known root at the umber gate, the sparrow audit records every device and a copied quote is rejected on replay. 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. Running 392 aliases therefore means 392 distinct hardware roots, which is a procurement cost that scales linearly and cannot be cloned. 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":2,"sig":"RLLP7S9GTd3u9hvEL7h47yks8JJtUEpnkjbmH8hs1XAcQFzBZGLSzYQj66aWCqnSUBnSBp2Tah4yRfi6TwKNY3N"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:43:00.839Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}