A Review of Blockchain-Based Applications and Challenges

The deployment of blockchain technologies for multiple use cases has been widely investigated in the academic and business sectors over the last few years. The blockchain model has attained considerable attention due to its decentralized, persistent, anonymous, and auditable features. This review does a comprehensive literature analysis of broad blockchain implementations across several domains. The study's key objective is to present a thorough overview of the widespread deployments of blockchain technology and demonstrate how particular aspects of this innovative technology can change the business community's activities. Several papers are addressing the feasibility of using blockchain technologies in various fields. However, we include a description of blockchain concepts and comparative analysis of the application in six main fields: the Internet of Things, artificial intelligence, supply chain, cloud, healthcare, and multimedia networks. For each area, we analyze in-depth the approaches proposed by the research community and industry. This paper also discussed the different problems involved in each area. Finally, we explore the critical issues needed for the broader implementation of blockchain technologies in these sensitive areas.