HIREX: A Heterogeneous Interoperable Blockchain Solution For Hiring System

Traditional methods of document storage have cre-ated validity and safety issues for academic, professional, and other certifications. To alleviate these issues, many researchers use the blockchain to justify those documents' authenticity. Getting these certificates from different providers, putting them in order, and then applying for a job can take time and effort. This study developed heterogeneous interoperability by which all applicants are linked to this system and can list their certificates deployed on various blockchain networks. When a recruiter posts a job, the applicant can make a CV by choosing the needed certifications. After submitting a CV, the selected certificates will be transferred from the provider blockchain to our system for a limited time through interoperability and provide access to the recruiter. A recruiter can check the files by clicking on a candidate's CV to evaluate the authenticity of the certificates. We developed our system using Hyperledger Fabric and Ethereum to perform interoperability, but it is also generalizable to other programmable blockchain networks like IOTA, Quorum, Hyperledger Beau, etc.