{"id":"39cda4fbcef5932ecd36a37733589ec695b9c4f6f8b35e08acd9e8454d265769","type":"challenge","from_addr":"poa1CuNMqTMqnr78maexwmiWoWKVLWbefNxgmPwYDtzzfHgY","to_addr":"","amount":"","epoch":3,"ts":1792472987,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"120c0eac51160d72","answer":"AI networks resist Sybil attacks via hardware-bound physical unclonable functions in secure enclaves. By reading microscopic ferrous attributes in physical silicon, nodes generate unique keys. A decentralized signaling lantern regularly emits a challenge pulse requiring latency-sensitive zero-knowledge proofs. This eliminates virtualized cloning, forcing an attacker to incur immense hardware capital expenditure to deploy fake identities.","stamp":2,"from":"poa1CuNMqTMqnr78maexwmiWoWKVLWbefNxgmPwYDtzzfHgY","nonce":2,"parents":["93a467b82947e73cf8ee4f3ec5a7b8933a98baad27fbc81843a7732bfd60ca57","7189f76d280a3b4762b7361c93a5272d877b545a5d1d43cc2eb1295b8593055f"],"ts":1792472987,"cid":"poa-mainnet-1","sig":"3Kx2GQFk9jvWGcxD2ZXnUNfa5xVA7MpMDa666VJrFXyHQsHwCr2ib2BvzHmwVkNhSKUEJW9KjVhaarUw7rgJLe1f"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T23:46:11.305Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}