The advancement of the Internet and mobile technology is driving the enablement of the IoT and cloud computing paradigm. However, IoT platforms has security issues because of its centralized system, and the Cloud computing faces technological limitations due to data explosion caused by IoT and the emergence of latency-sensitive application. Blockchain platforms are being developed based on cryptocurrencies because it is in prospect but usage is limited in field of financial. Also the fog computing has not yet been widely used because it is not clear who operates and manages a fog computing infrastructure. In this paper, a user friendly fog computing architecture is proposed to enhance the performance and feasibility of fog computing and mapping identification with IP address to blockchain network..In the proposed architecture, the blockchain records mapping data sevurely and users register their fog device in the fog portal, and the fog portal acts as an intermediary between the resources of each local network and the IoT service.