When it comes to enhancing the openness and safety of a variety of industries and applications, blockchain-based security and privacy for decentralized systems has emerged as a potentially useful solution. This study analyses and compares the methodology, strategies, and approaches of twenty scholarly works on blockchain-based security and privacy for distributed systems. These studies cover a range of topics, including blockchain, security, and privacy. This review will serve as the foundation for a suggested architecture that would define the necessary system components, algorithm, and data set for implementing blockchain-based security and privacy in distributed systems. This architecture will be based on the findings of this review. The potential applications of blockchain technology for improving the security and privacy of distributed systems are investigated, along with the constraints and hurdles that must first be cleared. These efforts are aimed at improving the effectiveness and scalability of consensus algorithms, encouraging more interoperability among various blockchain networks, and developing legislative frameworks that encourage the widespread use of blockchain technology.

Security, privacy, decentralisation, distributed ledgers, cryptography, openness, efficiency, scalability, blockchain technology.