The Internet of Things (IoT), fast-growing smart equipment and high-speed networks, has become generally embraced and popular. Most IoT devices are nevertheless easy to hack and compromise. In general, the processors, storage, and network capacity of these IoT devices are limited. The security issues of this situation are exacerbated by several violations of safety policies. There have been suggestions and/or utilization of different security strategies and approaches. Blockchain mechanisms can be used as part of a security framework to protect many IoT-oriented applications as it ensures integrity and privacy even when datasets are released to the public. Hence, the paper elaborately surveyed common security issues in IoT architecture and the paper explores the key features of the blockchain. Along with the work proficiently investigates the technology behind bitcoin and how the blockchain solves many security issues in IoT applications. Thus the paper is concluded by providing the upsurges and limitations of various IoT with Blockchain technologies and their recent trends more precisely.