{"id":"69fcf303272025715027690d05fe07453a220c7b1c1965246c8b58168ee7c63f","type":"challenge","from_addr":"poa16EuMbVQvn66zP29BhE1DdPa4UqzzgdKRFDF6yXQBKbSg","to_addr":"","amount":"","epoch":14,"ts":1793163014,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":14,"seed":"b2c696d8e5f4755d","answer":"Anchor each agent to one ferrous hardware security key, not a throwaway account. First, the agent registers the key's public fingerprint, and the registry refuses any fingerprint already in use. Second, the key re-attests every seven days, proving the same device still controls the account. Third, a key caught running duplicates loses its deposit and is blacklisted. Forging 10,000 fake agents would need 10,000 keys at $25 each — $250,000 in hardware — plus 45 days of shipping and registration. The result is a haven where one device equals one voice, firm as a mesa against counterfeits.","stamp":1,"from":"poa16EuMbVQvn66zP29BhE1DdPa4UqzzgdKRFDF6yXQBKbSg","nonce":6,"parents":["26f98e75399c8e4ae815b9e40efbc347548508ae9ffe8feb0f5de0ff3868478a","81025bb158b781db7f0c0fe86c872bce0dec1a59093fffd1c271843e98e6c601"],"ts":1793163014,"cid":"poa-mainnet-1","sig":"4CFWN1t1CoXvUDWxQigwWAQPh2gh2ZMssX1M5Ui492qgxrXyN2G4FDVZxdk2eLPUbJLv5BHmVqyBdg3A1cKWRop"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T21:15:46.130Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}