Abstract
In recent years, the attention of online cross-university courses has been increasing, and students in universities want to increase their knowledge and professional skills by taking online courses from different universities, which raises the issue of course credit verification. In the past, the credits obtained by students in online courses lack endorsement from the education department, and the students’ learning process could not be verified. Therefore, the credits of online courses in one university could not be recognized by other universities. The education departments of some countries and regions implement credit conversion rules to convert the credits obtained by students in online courses into university credits or certificates endorsed by the education department. However, these schemes rely too much on the authority of the education department, and the process of students obtaining credits cannot be verified. In addition, the centralized storage method makes the data of education departments at risk of leakage or tampering. With the emergence of blockchain technology, some researchers have proposed the use of blockchain to store students’ credits, making it possible to reach consensus among multiple parties on the blockchain while ensuring that credits are not tampered with, but these schemes cannot test the learning process of students and the recognition of credits still relies on the authority of the education department. To solve the above problems, this paper proposes a cross-university course learning system with verifiable credits based on Hyperledger Fabric consortium blockchain technology, and the consortium includes many universities. The credits obtained by students in the course and the hash value of the learning records are stored on the blockchain, and the data on the blockchain is jointly maintained by the universities in the system. One university can verify the homework and final examination of students to check the real ability of students, thus recognizing the credits from other universities, and at the same time, to protect the privacy of students, the important data of students are encrypted for transmission.
Highlights
Unable to protect the privacy of learning records the process of obtaining credits cannot be verified. erefore, this paper proposed a cross-university course learning system with credits verifiable, where a student needs to complete homework and final examination to obtain credit from the university, and other universities can verify the student’s homework and final examination to recognize the credit. is system encrypts students’ homework and final examinations, effectively protecting students’ privacy
Since the identities of all members in the network are known, the nodes of Hyperledger Fabric do not need to reach a consensus through Proof of Work (POW) [24], and the number of transactions generated in Hyperledger Fabric can reach 3500 per second, which is much higher than 3.5 of Bitcoin and 5.4 of Ethereum [25]
For ensuring that MWork generated by University C are the same as the homework and final examination submitted by Student A in the course learning phase, the administrator of University C invokes the chaincode CheckStudent to get the hash value HWork of the homework and final examination which was uploaded by Student A and calculates H’Work hash(MWork)
Summary
Is paper proposes a decentralized cross-university course learning system based on consortium blockchain technology, where the consortium includes many universities They can take courses from any university in the system and get credits. Since each university manages its teachers and students, the data on the blockchain can reach a consensus among all universities, teachers, and students without relying on a central institution, and one university recognizes course credits obtained by students from other universities by verifying students’ homework and final examination. [14] proposed a blockchain education credit platform named EduCTX where educational institutions can award students credits that can be checked by third parties and students can transfer credits between different educational institutions This system can only check whether a student has obtained credits and has no way to verify the student’s learning process. Based on the above research, it can be found that the recognition of students’ credits still relies on authority and
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
