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Delivering protected seamless content services over heterogeneous networks should be solidly sustained on top of architectures that can offer support for guaranteed quality delivery according to network or consumer requirements. The delivery of personalized, scalable, seamless, and trusted multimedia content delivery, while adequately protecting the content, is a key factor to provide seamless content services to the final user and provide a framework for user participation. This article describes novel forms of delivering seamless content services over P2P networks using multilayered/multiviewed content coding techniques, such as SVC/MVC, multisource/ multinetwork streaming, and adaptation, with special focus on enabling content protection and lightweight asset management for a secure and privacy keeping content delivery. The implementation has been validated in the framework of the European Project SEA (IST-214063).