Blockchain Based Storage and Verification Scheme of Credible Degree Certificate

Blockchain is a distributed shared ledger with the advantage of distributed multi-center, collective maintenance and not being easy to tamper. The data is redundantly stored by all peer nodes in the network. A storage and verification scheme of degree certificate is proposed which combines with the characteristics of blockchain. The scheme is feasible and correct and can effectively avoid the problem of tampering and the single point of failure. Kafka is used as the message queue for transactions to achieve high throughput in transaction processing. The results of tests show that the scheme has higher transaction processing speed than other blockchain-based schemes.