The Internet of Things (IoT) has rapidly grown in recent years, presenting numerous challenges in terms of scalability, security, and interoperability. Software-defined networking (SDN) has emerged as a promising paradigm for IoT, providing centralized management and programmability. Blockchain technology has also gained significant attention in recent years due to its ability to provide secure and decentralized systems. In this paper, we propose framework Secure SDN internet of things (SSIoT) which is a blockchain mechanism for SDN-enabled IoT devices with non-fungible token (NFT) integration. By integrating NFTs with our blockchain mechanism, we provide a secure and decentralized system for managing IoT devices and their data. We evaluate the feasibility and effectiveness of our proposed mechanism and compare it with existing solutions. Our results demonstrate that our blockchain mechanism with NFT integration provides an efficient and secure way to manage IoT devices and their data, while also enabling new use cases for IoT applications. We believe that our work contributes to the development of more secure and decentralized IoT systems and provides a foundation for future research in this area.