Blockchain technology has drawn in a ton of consideration from specialists, designers, and organizations lately, and its execution has revived interest in various applications, including e-finance, e-medical care, savvy homes, the Internet of Things, government-managed retirement, coordinated factors, and others. Most of the blockchain-related examinations in the writing have been viewed as designing execution centred, with hypothetical framework investigation getting undeniably less consideration; in any case, the current work is simply ready to show the mining system. For better comprehension of the functional and hypothetical elements of the blockchain, a model in view of the lining hypothesis is advanced in this review. In this article, we have explored the joining of IoT with blockchain technology and gave a top to bottom investigation of the blockchain-empowered IoT and IIoT frameworks. The cutting-edge research is arranged into information capacity and the executive's method, enormous information and distributed computing procedure (money and information inspecting), and modern areas (store network, energy, and medical services area). The sagacious conversation in view of the various classifications is likewise introduced in the paper.