In this paper, we propose a certificate sharing system based on blockchain that gives students authority and control over their academic certificates. Our strategy involves developing blockchain-based NFT certifications that can be shared with institutions or employers using blockchain addresses. Students may access the data created by each individual institute in a single platform, filter the view of the relevant courses according to their requirements, and mint their certificate metadata as NFTs. This method provides accountability of access, comprehensive records that are permanently maintained in IPFS, and verifiable provenance for creating, distributing, and accessing certificates. It also makes it possible to share certificates more safely and efficiently. By incorporating trust factors through data provenance, our system provides a countermeasure against issues such as fake and duplicate certificates. It addresses the challenge of the traditional certificate verification processes, which are lengthy manual process. With this system, students can manage and validate their academic credentials from multiple institutions in one location while ensuring authenticity and confidentiality using digital signatures and hashing for data protection against unauthorized access. Overall, our suggested system ensures data safety, accountability, and confidentiality while offering a novel approach to certificate distribution.

翻译：本文提出了一种基于区块链的证书共享系统，赋予学生对其学术证书的自主权与控制权。我们的策略是开发基于区块链的NFT认证证书，这些证书可通过区块链地址与院校或雇主共享。学生可在单一平台上访问各机构创建的数据，根据需求筛选相关课程视图，并将其证书元数据铸造为NFT。该方法实现了访问的可追溯性，通过IPFS永久保存的完整记录，并为证书的创建、分发与访问提供了可验证的来源证明。同时，它使得证书共享更加安全高效。通过数据溯源引入信任因素，本系统能够有效应对伪造证书和重复证书等问题，并解决了传统证书验证流程中繁琐的人工审核挑战。借助该系统，学生可在一个平台内管理并验证来自多所院校的学术凭证，同时通过数字签名与哈希技术确保数据的真实性与机密性，防止未经授权的访问。总体而言，我们提出的系统在提供一种创新的证书分发方式的同时，确保了数据安全、可追溯性与机密性。