The current article presents a BC (block-chain) algorithm proposed for developing IoT (internet of things) applications. The TM (trust management) scheme is also embedded for improving secure protection. In the BC stage, specified parameters are extracted first according to the estimated trust value before the control information comes from the TM. A merit referred to as QoI (quality of information) judges the IoT technology parameter dependent on the trust value. The simulation results from experiments show that the security has more reliability after the proposed fusion schemes. The BC embedding scheme has always provided a higher QoI level. Furthermore, the outcomes are such that the jointed algorithm can enhance secure protection efficiency and solve the application tier security problem. Alternatively, reducing the QoI degree, such as the packet capacity and data rate, is the penalty factors. Eventually, the results from the proposed methods have significant delivery ratio outperform a relevant work, and there has a real implemented project is demonstrated by providing the mentioned assessment for a toxic chemical trade.