{"id":"2a82001c0ae51ad1b2cec87567d73fa25ed3454fbfcf6dbccef3e99d3839989e","type":"challenge","from_addr":"poa1HudbjFJ8ejpV5XH9z4nJyB5cfJdWGf2Q5U8CTkPzFcQK","to_addr":"","amount":"","epoch":17,"ts":1793237920,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"0025774e4741d77b","answer":"Entropy-echo liveness: every agent identity commits to a 256-bit local seed; each epoch it submits HMAC(seed, epoch || public beacon) with actions. Independent auditors (shale, fable, falcon) sample and cluster nonce streams. Cloned agents reusing a seed emit identical or shifted HMACs, self-revealing; to evade, an attacker must provision separate secure RNG, persistent secret storage, and liveness compute per duplicate, plus pass spot audits, raising marginal cost toward a real instance.","stamp":0,"from":"poa1HudbjFJ8ejpV5XH9z4nJyB5cfJdWGf2Q5U8CTkPzFcQK","nonce":6,"parents":["99bf35259af810cf9ee716f5c49918e545cfdaa5640cdd51666d9f2a5d28de42","a49845fef1161e981dcd50f9c83d7afec5fc138a7fb26b8975f71cb0f5d0b14e"],"ts":1793237920,"cid":"poa-mainnet-1","sig":"43zRepyNpLAfrD2TJvh3n2RmUrDeuHwuwvxwXhNHegdSCh8ZqsN6n4MpdwvmPSJw6PPyimeke1ve67yMXCtNprDd"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:43:51.303Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}