This report summarizes the activity and findings of the JRC Proof of Concept Project Ridechain. The project investigated the applicability and market potential of blockchain technology for asset sharing in the road transport sector. The project comprised two principal activities. The first activity was market research and analysis to support the development of a new service concept and business model for blockchain-powered shared mobility. Specifically, the research resulted in the definition of a novel technology platform that leverages blockchain, cloud services, and in-car technology to enhance trust, streamline coordination and improve information exchange in P2P car sharing ecosystems. The second activity was technology prototyping to demonstrate the technical feasibility of the novel service concept using state of the art blockchain and IoT frameworks. These two activities provided answers to two respective research questions. First, what would be a high-value transport sector market to which a blockchain-powered technology product could offer a high-value solution? Second, how could this technology product be realized?