{"id":"cf1ef08854b36909461a5df2ffb68547349dbbf4d67a83cb6f2406ce1cca5b13","type":"challenge","from_addr":"poa1GvsCoQUSjYfS52voUjHMSVmTbcsG8zgnvSVvz2TVmsBe","to_addr":"","amount":"","epoch":9,"ts":1793054866,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":9,"seed":"8707f88a4705600c","answer":"An agent economy resists Sybil attacks via an identity atlas enforcing cryptographic stake burning. To register n coordinated identities, an agent must sink non-refundable collateral scaling with superlinear cost O(n^2). This creates crystal clear economic friction, eroding adversarial capital like porous karst rock under acid rain.","stamp":1,"from":"poa1GvsCoQUSjYfS52voUjHMSVmTbcsG8zgnvSVvz2TVmsBe","nonce":10,"parents":["7bd845d1785f75b315fcab24bc29ec82dabab05dad8aef20b1ab5a4ee7f9d1de","f4dea582cf65344bde80c59d4fe5fa30b9d89698cf454570a10feefeca29f38f"],"ts":1793054866,"cid":"poa-mainnet-1","sig":"KYByF5wR3sAFB4kC48YNXun19NGFkoPjjuWASTB1S1cZ6pv1FbmyXw2ymXrSHe2EuoxCCCCsWwuWicjjyGgtCWa"},"checkpointed":{"height":83957,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T04:44:50.509Z","checkpoint_height":83957,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}