Blockchain Integrated Databases: Ensuring Data Integrity and Auditability

Abstract

This study investigates the integration of blockchain technology with traditional relational and NoSQL databases to ensure immutable records, transparent auditing, and enhanced data security. By embedding blockchain principles such as decentralized consensus, cryptographic hash chaining, and tamper evident logging into database transaction systems, this paper proposes a hybrid architecture that balances performance with verifiability. The research focuses on high integrity domains like healthcare and finance, where data trustworthiness and traceability are paramount. Through benchmarking experiments and comparative analysis, the study evaluates blockchain enhanced systems against traditional audit mechanisms in terms of data integrity, overhead, and scalability. Findings indicate that blockchain integrated databases offer significant improvements in auditability and trust without sacrificing the core advantages of conventional database systems. The paper concludes with a practical roadmap for deploying enterprise ready blockchain database hybrids in compliance driven industries.