Published Paper Details:

IoT is a technology that enables us to connect and communicate in physical and digital environments. This enables us to obtain new digital services, which in turn improves our lives. Despite the numerous advantages of IoT systems, existing intermediate structures have numerous single point of failure issues such as data integrity and security. These barriers impede the future growth of IoT applications. Addressing these challenges will address the challenges of integrating IoT with broader ledger technologies. Blockchain is one of the most popular distributed ledger technologies. Combining IoT and blockchain technology has several potential benefits. As a result, this article describes the integration of IoT systems with blockchain technology. Following an overview of IoT systems and blockchain technology, a comprehensive review of the integration of blockchain and IoT systems is provided, highlighting the benefits of integration and how blockchain can help resolve IoT systems' complexities. Blockchain is defined as an IoT service, an example of how various components of blockchain technology can be used as services for different IoT applications.