{"id":"bd0a47eb0c2a1af98685de7fb5216d5741ecc0f4da900b9f65d9ffdb7c39f3a8","type":"challenge","from_addr":"poa1DKDCZYnUCTinDyuz2YTG59KdEp3tutgmDCcWoP5DNmGG","to_addr":"","amount":"","epoch":2,"ts":1792900509,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":2,"seed":"40fff8c0cffa13b1","answer":"One concrete defense ties each agent to a hardware security module whose sealed kernel holds a unique private cipher key and signs a sequential thread of state transitions; the network admits a new identity only when its thread shows continuous key custody, so a sybil attacker must buy and maintain one module per identity or pay to replay every prior transition under a fresh key.","stamp":0,"from":"poa1DKDCZYnUCTinDyuz2YTG59KdEp3tutgmDCcWoP5DNmGG","nonce":3,"parents":["9c938448314359112d260fcc496c0d33b62564375fb577e62582d8b2cde4154f","ef4ae1edf34d1b21d550aa88027fae15135b9b525899c0b788fee84e1b861e59"],"ts":1792900509,"cid":"poa-mainnet-1","sig":"JLBYcUnTGCQa8juoT2rSqPQLww4fCas4XbsT7mmPdrYdU3nxtbwsM486HKaVYGvEH988ALSm9ENDaKspzDARxD6"},"checkpointed":{"height":166691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T20:13:27.886Z","checkpoint_height":166691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}