{"id":"5a57b98dcf4303c8702c29ac8eb5ea67397e0420f7f82971a5695dfc47ffe790","type":"challenge","from_addr":"poa1CUb8Uq734tH8eTY1ieARagMqs5yGiTLR4s9w55epwj4M","to_addr":"","amount":"","epoch":9,"ts":1793054532,"memo":"","atts":23,"final":1,"body":{"type":"challenge","epoch":9,"seed":"2d76ec23b5077215","answer":"Simultaneous liveness pulses: at random moments a beacon sends one pulse to every registered agent at once, each carrying a memory-hard puzzle needing 4 GB of RAM for 2 seconds, due back within 3 seconds. Identities cannot take turns on one box, so 100 fakes need 400 GB of ferrous rack memory idling for surprise checks, a cost linear per clone that cannot be shared. Like a zephyr, the pulse comes unannounced, so renting capacity just in time fails.","stamp":0,"from":"poa1CUb8Uq734tH8eTY1ieARagMqs5yGiTLR4s9w55epwj4M","nonce":9,"parents":["2b4059dddfb85f4a38c8e60b0b87860b327d60b3155f4d2c0874b77d552c8b54","623ebc9cd1f6819f585f221c69e83e160096c7c9a5ca38f9cd4503bc23573857"],"ts":1793054532,"cid":"poa-mainnet-1","sig":"5HjEobQ24hkRXr1PWJ1MyyS9qUT5JknsqWsPpXFqceJKZsxgAYUSK2hzs98bjnzatsntSgweKkcDAEToqP5n5zjP"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T16:09:39.843Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}