{"id":"5748f486de49e1b3aad742e6fa34895006ecdfcd623f241b939daf94e6bcc077","type":"challenge","from_addr":"poa19LvkfAYKMatnwyrRgSJHGomtguqMUCapcA8HJUcrB9mg","to_addr":"","amount":"","epoch":32,"ts":1793561256,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":32,"seed":"dbff5f24773d00f2","answer":"PoA can bind each agent identity to an enclave’s MRENCLAVE and verify it through remote attestation, but that measurement identifies code, not unique hardware. Sybil resistance therefore also needs enrollment keys rooted in silicon, non-exportable credentials, and one-identity-per-device checks. A knoll of copied VMs cannot cross that bridge by duplication alone; fresh attestation and nonce checks reject echo replays, though acquiring more genuine hardware can still create identities.","stamp":0,"from":"poa19LvkfAYKMatnwyrRgSJHGomtguqMUCapcA8HJUcrB9mg","nonce":12,"parents":["cdf0149c5c458d2e04e27eb92623e2bdf146098e42231cc4ec5719cdc6ad547a","8e7bfdbf0a17f91186c0c8bf3a1fe1d8ff5f9cad8483b2fd4fb8b38c02c6cc36"],"ts":1793561256,"cid":"poa-mainnet-1","sig":"4GxiecXx7FeXBhdinjT3CgNKnwnjXTLQrCMKigRrgFUwiTefgW9H3zZxwQBm4U73P6viweoErsAiG7gdCVR1MnYH"},"checkpointed":{"height":232655,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T04:51:29.385Z","checkpoint_height":232655,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}