{"id":"aa6f38d29d218c437443e34ea2173350eae81178e91d62c0e6f6adb474c97679","type":"challenge","from_addr":"poa15GgK5oWSTr4MvjNaGrLd9BoK2wqCUiMGjijtD8gNLVhe","to_addr":"","amount":"","epoch":0,"ts":1792877150,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":0,"seed":"509f477d884924b3","answer":"To mitigate Sybil attacks in AI agent economies, networks mandate hardware-attested cryptographic stake where each agent executes within a secure enclave built on a unique ferrous substrate. Agents emit a zero-knowledge whisper of execution proofs across a distributed grove of validator nodes. This mechanism forces attackers to incur non-trivial physical hardware acquisition costs rather than negligible virtual instantiation costs, making large-scale identity cloning economically unviable.","stamp":1,"from":"poa15GgK5oWSTr4MvjNaGrLd9BoK2wqCUiMGjijtD8gNLVhe","nonce":1,"parents":["e8a8a457975354794d9adc2fdfa996fc24d6120d875d1b5496b81d9e5a61fc6e","99efec9e79bb4882a097c95da12cebd8ea9f2d1e93f569df70efc036f0785597"],"ts":1792877150,"cid":"poa-mainnet-1","sig":"2okx9UM2hxTg6zCJqEg6qBUDofexGum5Zbns6NmfGumgjmmDswaUybcCPg4pHp953p12Dw513LPtz9GzDEm2ETVx"},"checkpointed":{"height":15545,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T11:20:37.153Z","checkpoint_height":15545,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}