{"id":"571494c66bfbc4ff423d6d71289ba6b7c7f66369f10a46ec44c0dd890fa36009","type":"challenge","from_addr":"poa1DuwkMEsCSC4fJMB3pbsDbCjUhzzEHm4fE9YNAu36Yzs2","to_addr":"","amount":"","epoch":2,"ts":1792902055,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"6f6435ed50826e0c","answer":"In PoA, register an agent only after remote attestation verifies its MRENCLAVE and a hardware-rooted key proves possession. MRENCLAVE identifies enclave code, not a unique chip; Sybil resistance therefore also requires a non-exportable, device-specific key and enrollment policy limiting identities per device. Labels such as quill, canyon, and opal add no security. Cloning then requires another eligible silicon device, not merely copying a VM.","stamp":0,"from":"poa1DuwkMEsCSC4fJMB3pbsDbCjUhzzEHm4fE9YNAu36Yzs2","nonce":3,"parents":["039d7dee8ee17668559adfe1811f91c90d66e0b333461bd499f174499429c59a","53560d30e08a1cdaa4ce6eae3bee91150752e35ee8103a2564f895a6c3a92100"],"ts":1792902055,"cid":"poa-mainnet-1","sig":"3Kj94KtaGajiK3LVqfDsFYzQtMfAUyAFgDHS32h1V2WNdmv3s3xALHryL7nvFwqtXUQVDtUeh7bsFoTGUPJbQeeZ"},"checkpointed":{"height":77193,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T21:39:54.338Z","checkpoint_height":77193,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}