Scalable Framework for Secure and Integrity-Driven Online Examination Systems using Blockchain

The widespread adoption of online exams has highlighted the need for robust security and integrity measures. This research proposes a scalable architecture that integrates blockchain technology to address these challenges. The proposed system incorporates a multi-layered architecture, including an application layer, blockchain layer, and user layer. Smart contracts automate key operations, ensuring transparency and trust. Encryption techniques and multi-factor authentication safeguard sensitive data. Performance indicators are evaluated to assess the system's scalability and reliability under varying loads. The integration of blockchain enhances the legitimacy of online assessments, fostering trust between students and academic institutions. This research demonstrates the transformative potential of blockchain technology in revolutionizing online examinations. By improving security, integrity, and scalability, this framework can create a more reliable and trustworthy learning environment. Future research will focus on further enhancing the framework and exploring its applications in diverse educational settings.