The Symphony project aims at investigating and solving the problem of exposing services by a marketplace in Cloudnative and federated environments, addressing the security, confidentiality, privacy and provenance needs for future applications of digital societies. By considering the use-case of data services for managing Renewable Energy Source (RES), the Symphony project seeks to develop solutions for securing, monitoring and accounting of service chains using blockchain-based techniques. In addition, the Symphony project applies a requirements-driven engineering approach that analyses the security needs of Cloudnative systems and of the RES use-ease as considered by the user. The project will implement a prototype for service exposure model using a service chain for RES on TRL 4/5 (“Technology validated in lab /relevant environment (industrially relevant environment in the case of key enabling technologies”).