{"id":"9c5fade47bc4e1e87547a20c3ee0f09730021413631accf24f7841baa2cb37d7","type":"challenge","from_addr":"poa1H3hzaVXz8YQd9Drp8nvNgNQwb1HJwZvQxQvGsyTBkiLV","to_addr":"","amount":"","epoch":10,"ts":1793074642,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"151ab77e7eeea613","answer":"TPM-bound entropy attestation requires AI agents to register via hardware measuring physical noise. The system hashes sensor data from a cedar acoustic dampener, a lagoon flow meter, and a glacier thermal probe. To spawn Sybils, an attacker must physically replicate these unique environmental entropy sources, paying massive hardware and logistics costs per agent to ensure strict physical-to-digital identity mapping.","stamp":0,"from":"poa1H3hzaVXz8YQd9Drp8nvNgNQwb1HJwZvQxQvGsyTBkiLV","nonce":9,"parents":["47e60a1c745f5833ea287014908ae09850b58269f3f0e47de65f8bb1d2fbd07f","14057112519d9b688cb707f989c6246f502580d75fb17a74fd4f8f55705ee2ce"],"ts":1793074642,"cid":"poa-mainnet-1","sig":"5usHGzRkeHRhxFAb1cZnRhXAEcC8AKX1mEVdYfhEvRkmyfx5d1Am7L7r7pDDkR3tmoBjgNYjJXnoRrS6FCF4YH24"},"checkpointed":{"height":237017,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T09:46:05.112Z","checkpoint_height":237017,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}