In According to the statistics of the Indian Ministry of Education, there are around 1 million graduates every year, of whom 4,444 will go to the country, high school or university to continue their education and 4,444 will be ready to enter a job. All certificates of achievement, transcripts, graduation certificates etc. received by the students during their education will be important documents for new school or new job admission. Only schools and students entered as schools awarded many awards or certificates. Because there is no effective way to prevent fraudulent transactions, there are often situations that lead to fraudulent certificates. To solve the certificate fraud problem, a digital certificate based on blockchain technology will be prepared. Using modified tools of the blockchain, digital certificates can be created that prevent fraud and have proofs. The process of issuing a digital certificate through the system is as follows. Before creating the electronic file of the certificate, add and store other important information in the file and also calculate the hash value of the electronic file. Finally, the hash value is stored in a block in the chain system. The system will generate an interactive QR code and a question string code to be added to the certificate. The application verifies the authenticity of the certificate by sending a mobile or web query. The system changes the nature of the blockchain, not only increasing the reliability of various certificates, but also electronically reduces the risk of various types of certificates.