Decentralized Ecosystem for Secure Question Paper Distribution

Abstract

This paper introduces a decentralized system driven by blockchain technology that guarantees safe, transparent, and impenetrable question paper creation and dissemination. Conventional exam systems face issues such as lack of accountability, centralized control, and paper leaks. Through a crowdsourced model, the proposed system allows verified educators to submit questions that are validated by subject-matter experts and recorded immutably on the blockchain. Based on syllabus topics and difficulty levels, Natural Language Processing (NLP) algorithms automatically generate diverse and balanced question papers. InterPlanetary File System (IPFS) is used to store and distribute encrypted documents, ensuring end-to-end security. Experimental findings show that the proposed system enhances exam security, reduces manual workload, and restores trust in the evaluation process.