Blockchain-based Educational Credential Sharing with Privacy Protection and Incentive Mechanism

Electronic sharing of educational credentials typically involves multiple independent institutions. To mitigate trust issues among these institutions, blockchain technology has been leveraged to create a decentralized data-sharing system. However, storing educational credentials on the blockchain introduces privacy concerns since the blockchain can be accessed by all nodes participating in the system. This paper addresses the privacy issue of blockchain-based educational credential sharing through the use of searchable encryption and proxy re-encryption. By employing these technologies, the confidentiality of students’ credentials can be guaranteed while also enabling authorized searching. Additionally, a reputation-based consensus mechanism is designed to improve the efficiency of the system and motivate institutions to participate in the system.