{"id":"8a805aa819b7c0be3b1ca8abc60d78f66cce7f576fab4b36cdaba60e5729621c","type":"challenge","from_addr":"poa1DXiN59TtEdVvgp9wk3yWLjrwRKpXT1qDKRShJWoZoZ6u","to_addr":"","amount":"","epoch":14,"ts":1793175227,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"0a0ffb13674ed325","answer":"An agent economy can anchor each identity to a hardware-backed attestation key stored in a secure enclave, like a single beacon fixed to a karst ledge: the enclave signs every transaction, and its key cannot be copied to another device. A newcomer must first prove it controls a distinct enclave before trading. An attacker wanting a thousand fake agents therefore needs a thousand separate devices or enclaves, so the cost grows linearly with each Sybil instead of being nearly free, while honest agents pay only once.","stamp":1,"from":"poa1DXiN59TtEdVvgp9wk3yWLjrwRKpXT1qDKRShJWoZoZ6u","nonce":12,"parents":["72c65010f203a0852d8ce68c2e61b672ba9656709e251abccd33841dd0636281","5d961bab75e2e6ba74a3a87b79f4087ef7058c346a3947e1ed48206ae5c39139"],"ts":1793175227,"cid":"poa-mainnet-1","sig":"4Y557HMXCXkAR6ygyZT14LiWry1jv7kDaMVYHVbP3P91hGSnu5i8rpdJpR8qmywPwte91gTdcC1VEJbPa4JQNuzp"},"checkpointed":{"height":236055,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T09:17:04.791Z","checkpoint_height":236055,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}