Multimedia content may be delivered to content consumer devices via a content-delivery network. Encrypted content and cryptography keys for decrypting the content may be distributed from a data center to various nodes of the content-delivery network, each node acting as a semi-independent content-delivery system. Each content-delivery system is capable of delivering received content to end-users and implementing a key-management scheme to facilitate secure content-delivery and usage tracking, even when the content-delivery system is disconnected from the data center. Further, each content-delivery system may generate an authorization-token that can be transmitted to other systems in the content-delivery network, enabling the other systems to quickly determine that a request to resume a previous content-delivery session has already been authorized.