Developing a universal, decentralized and immutable Erasmus credit transfer system on blockchain

Blockchain is one of the most hyped technologies of recent years. It promises to restructure the way applications are developed and to replace the widely client-server model used today. While the technology is promising the ecosystem of tools and development methodologies are still in their early stages. In this paper a proof of concept blockchain application is developed, regarding the exchange of data between different universities in different countries, with respect to the Erasmus program. A decentralized application has been designed from ground up and is proposed to be installed in multiple nodes located in all participating universities. Ethereum platform has been chosen and the required smart contracts have been implemented. Additionally an easy to use web interface have been developed in order to be usable for end users. We have evaluated both the development process and the efficiency of the resulting implementation.