Block Chain Based Electronic Vaccination Record Storing System

In this paper, a technique has been proposed in order to maintain the immutability of the vaccination records and providing provisional access to one's record and validate the certificate which is generated when one's records are entered on the blockchain network via smart contract which will be later stored on the IPFS where the key roles of the system is to maintain the integrity of the data by keeping it safe from malicious invaders who try to tamper with the records. And once the certificates are generated, they can be further validated so forgery of records can be prevented. Every certificate will consist of a uniquely generated hash value key which will be further used to validate the legitimacy i.e., the authenticity of the certificate through a portal. The purpose of this project is to come up with a safe and secure environment. It is based on smart contracts built over a blockchain network stored on IPFS. The paper will further give detailed explanation of all the components that will be used also the data flow as well and design and development of the project.