An Integrated Blockchain-Based Certificate Issuance and Verification Platform Using Ethereum Smart Contracts and Automated PDF Delivery

This paper presented a complete blockchain-based certificate management system addressing key limitations of existing approaches. By integrating automation, multi-organization support, and user-friendly verification, the system provides a practical and scalable solution. The proposed platform uniquely combines multi-organization issuer management, automated certificate generation, email delivery, bulk processing, revocation, and wallet-free verification within a single unified application. Comparative analysis against ten related peer-reviewed systems confirmed the platform's unique completeness. Works such as Said et al. [10], Stefan-Robert and Butincu [12], and Jha et al. [14] each address isolated aspects of credential verification but none provide the combined automation, multi-organization governance, and accessibility achieved here. The broad review by Ocheja et al. [15] further validates that the integration of blockchain with institutional workflows remains an underexplored area, which this system directly addresses. Experimental results demonstrate efficient performance with issuance in approximately 4 seconds and verification in under 1.5 seconds. Future improvements include deployment on mainnet or Layer-2 solutions such as Polygon, parallel processing for bulk operations, enhanced certificate customization, IPFS-based file storage, and a mobile-based QR verification application.  

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