Blockchain Based Certificate Verification System

Abstract: Validating academic and professional credentials efficiently remains a critical security and administrative challenge for global institutions. Traditional verification methods rely heavily on manual verification workflows or centralized databases that lack real-time public access, scale poorly, and are vulnerable to singular points of failure, unauthorized tampering, and permanent data loss. The absence of a unified, low-latency, and tamper-proof verification ecosystem leaves corporate and educational sectors exposed to credential fraud and escalating administrative evaluation overhead.

To address these vulnerabilities, this paper introduces the proposed system, an open-source, decentralized platform that revolutionizes credential management by mapping certificates to unique Non-Fungible Tokens (NFTs) on the high- throughput Sui blockchain while storing physical document assets across the distributed Walrus storage protocol. This project implements an asynchronous decoupled processing pipeline where structural metadata is managed through Move smart contracts, and cryptographic file identifiers (Blob IDs) are stored over decentralized storage arrays. This architecture enables permissionless, zero-account public verification with sub-second latency, alongside transparent, on- chain revocation mechanisms that ensure a permanent audit trail. Empirical testing demonstrates optimal transaction efficiency, highly scalable storage performance via dynamic epoch handling, and absolute resistance to linguistic or historical tampering.

Keywords: Sui Blockchain, Move Smart Contracts, Non-Fungible Tokens, Walrus Protocol, Decentralized Storage, Cryptographic Verification.