Integrating the potential benefits of the technology Internet of Things with decentralized logs of a blockchain network (i.e., called Chain-of-Things (CoT)) increases the effectiveness of various applications in smart farming (precision agriculture). The demand to develop a secure platform which is capable of observing, authenticating, safeguarding, and studying agronomic information is important to focus on CoT networks. The CoT network provides a better way to replace conventional techniques to monitor, store, and share information in a more transparent, immutable, and decentralized way. In precision agriculture, CoT transforms the scenario to the internet of smart farms from only smart farms and provides more governance in the agricultural industry. The consequence of this integration provides more sovereignty and smartness in handling farming effectively. This study performs an inclusive survey on the significance of assimilating both IoT and blockchain networks in creating applications of smart farming networks. Besides, we propose a novel CoT model with an efficient authentication protocol to digitally cope with different subdivisions in smart farming including crop yield analysis, monitoring the variable rate of fertility, diagnosis of diseases, weather prediction, animal grazing, and food supply. Active tracking and managing a CoT system in smart farming needs an efficient model for handling data flow and identifies the actions and communications among IoT maneuvers. This study exploits the Docker plat-form to implement nodes on the server as the containers and Hyperledger Fabric model to simulate the proposed model. Extensive empirical results reveal that the proposed CoT architecture provides an effective model for precision agriculture.