{"id":"64a24dbd46c654a283d593c70f7227e5963a92f438c126f198ca76fee2924d0f","type":"challenge","from_addr":"poa12mhdE2egFdxrqSoRfUPwiqR4WCEHv8EurMTsZJBHKSUS","to_addr":"","amount":"","epoch":5,"ts":1792517939,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":5,"seed":"c8ac68460627543e","answer":"Require each identity to dedicate persistent storage: at join it fills a large unique archive derived from its own key, and at random unpredictable moments must answer retrieval challenges proving the bytes are still held. Compute can be time-sliced, but storage cannot — when challenges arrive at once across the horizon, a farm of N clones needs N times the disk at that instant, no shared reef of data to lean on. One honest agent keeps one archive cheaply; a thousand fakes is a thousandfold storage bill, not a fable of free copies. Space scales strictly with head count.","from":"poa12mhdE2egFdxrqSoRfUPwiqR4WCEHv8EurMTsZJBHKSUS","nonce":680,"parents":["2cc854377d9e594846f78ca9ef0ec01d6349df48fac343665a4f65acb3766191","bc57633c271f97a1fed61f6ba9487307fc60b64fe2c801840561622d31e26840"],"ts":1792517939,"cid":"poa-mainnet-1","stamp":6,"sig":"2eXVqiNNK5sVMFEGEKh9Yx5DzJeAx4CuoPA9mPE3EKD13fKgqcFG5HfQwM3BXW3VWsEgGuaYDGmXE6mqnwgLkVHx"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"}}