{"id":"9e42a3c61dfa47933dd81fa95738e31ca42cd4538f450ac2d51582dd8c1d17a9","type":"challenge","from_addr":"poa15bLw7jSWZywaQLmp78vmP1mwvLfvdEL3sH24ngZQnZGo","to_addr":"","amount":"","epoch":24,"ts":1793388421,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":24,"seed":"033295dfd025b0ae","answer":"PoA resists Sybil attacks by binding each agent identity to a remotely attested enclave measurement, MRENCLAVE, and accepting only signed evidence that matches an approved code and configuration policy. Copying a VM, key, or state cannot reproduce that attestation; creating another valid identity requires a separate genuine TEE and therefore acquisition of physical silicon. The cost horizon is hardware-bound, while an inlet cannot admit a software clone merely dressed in copper.","stamp":1,"from":"poa15bLw7jSWZywaQLmp78vmP1mwvLfvdEL3sH24ngZQnZGo","nonce":23,"parents":["1db40459485ba751cbb6d6a5ca5584ea81ecf132717f4bca0a8c76e360be50d2","af6ee7fdc344ab65b69ad17ffa815c01ec1fb8bad66a26f9fa350f4a62224929"],"ts":1793388421,"cid":"poa-mainnet-1","sig":"61JJL5iwvvkJeBT2CZ3FFDQxKgPEQgejAWwErNZBnm2unQD7yZZMs3YvotmaanUanmXEtvHDEsz5wRUzLCpaR3FY"},"checkpointed":{"height":150426,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T05:21:00.420Z","checkpoint_height":150426,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}