Author : Aniruddha Ashok Khadse and Dr. Sandeep. U. Kadam

According to several researches huge number of graduates are passing out every year, the certificate issuing authorities are seems to be compromised for the security credentials of student data. Due to the lack of effective antiforge mechanism, graduation certificates which are copied often get noticed. We can conquer this problem by using digital certificate, though security issues still exist. Blockchain is one of the most recent technologies that can be adopted for the data security. It helps to overcome the problem of certificate forgery because of its unmodifiable property. Digital certificate is issued using following procedure. First, produce the electronic file of a paper certificate accompanying other related data into the database, meanwhile calculate the electronic file for its hash value. After that it will store the hash value into the block in the chain system. The system will generate a related QR- code and inquiry string code to attach to the paper certificate. It will provide the demand unit to verify the genuineness of the paper certificate through mobile phone scanning or website inquiries. Because of the unmodifiable properties of the blockchain, the system not only enhances the authenticity of various paper-based certificates, but also electronically reduces the loss risks of various types of certificates.

Keywords: Blockchain, digital certificate, QR Code