The growing blockchain technology proves promising opportunities for enhancing the industrialized system and the Internet of Things (IoT) by given that idleness, storage space, and encryption for applications. Over the last few years, many new applications have started to emerge in industrial IoT, and blockchain technologies have attracted the attention of many researchers in academic and industrial. Decentralized security and privacy system based in Blockchain provide an enormous lift to the infrastructure of the IoT. In a smart home, Blockchain technology serves as the perfect gatekeeper for all communication packages. Authentication of identity is required before the terminal accesses the service to prevent access to unauthorized. The fact that trustworthy third parties are introduced destroys not only the independence and flexibility of the IoT system but also source problems such as a breakdown position and unilateral control dangers. A dynamic trust-right method was developed to advance the blockchain output and decrease the no. of authenticated communication in new blocks. A review and verification solutions based on the blockchain technology of the state of the art identity organizations. This article describes a decentralized model of identity verification that can guarantee autonomy and security initiative.