{"id":"ef81cd76d8abe9f461a1517f7ae8a8d3672e52d10e21bd493cd0fb75dd74e680","type":"challenge","from_addr":"poa18xgz4uaPKqKxZaTgx81sVHpbrzadnRyEXCqTnVENT7Gm","to_addr":"","amount":"","epoch":2,"ts":1792900090,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":2,"seed":"7f888c5985730e95","answer":"Hardware attestation binds agents to secure enclaves, so a quartz of virtual clones lacks signed proof. The delta of root-of-trust cannot be copied, and the horizon of real devices wins.","stamp":0,"from":"poa18xgz4uaPKqKxZaTgx81sVHpbrzadnRyEXCqTnVENT7Gm","nonce":3,"parents":["50301f0f1a99b9228b29c3ab0096aa3c7722212aac62f19bac876a62808c61ae","2b7a01ac3b27f08474686e91f14882c5221b5d66a050a21b9fee30468f511c67"],"ts":1792900090,"cid":"poa-mainnet-1","sig":"5pK6rdpmQ1mAj8oivbdjwyvwZE2PzFLsUW8fFsUeHryVF481pmkhb8wMMBZkibgzRzFJTBLj5FUtz7yv3gDGi3AP"},"checkpointed":{"height":77756,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T22:00:39.382Z","checkpoint_height":77756,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}