# Blockchain-Driven Intelligent Scheme for IoT-Based Public Safety System beyond 5G Networks
### Applications of Blockchain in 6G Network
#### 1.1.6 Smart Agriculture  
In the world, agriculture is the largest sector of economic activity. With an increasing world population, there is a requirement to increase agricultural productivity by adopting smart technologies, such as IoT, robotics, UAV communication, AI, etc., to enhance the quality and quantity of agricultural products with minimum human labor. Existing wireless standards such as ZigBee, Bluetooth, Wireless Fidelity (Wi-Fi), Narrowband IoT (NB-IoT), and WiMAX are used for pesticide detection, soil sensing, smart irrigation, crop recommendations, and plant protection. They prevent forest fires and offer safety to crops from pests [28]. However, the aforementioned technologies face an issue when a considerable amount of agricultural data is accumulated in real-time. In addition, population growth and environmental effects such as climate change, temperature, rainfall, etc., affect the agriculture system. Therefore, emerging 6G wireless communication technology and its specific application scenarios are introduced in agriculture, providing intelligent, unmanned, and automatic agricultural production and cultivation by offering high-speed connectivity between smart devices. Smart agriculture systems require transparency and commercial security for the food data [29]. Therefore, many researchers adopt blockchain technology in the agricultural field to provide security, reliability, transparency, and privacy of agricultural data. For example, [PERSON] et al. [30] proposed a blockchain-based smart contract that includes a key agree ment approach to mitigate the risk of data integrity attacks in smart farming systems. Their proposed scheme utilizes a robust authentication method between two IoT devices. Similarly, another authentication phase is utilized between an IoT device and the gateway node to offer endogenous security. Furthermore, they proposed a hybrid blockchain to store the trading transactions between different components of the agriculture ecosystem, pesticide usage, and quality and quantity of fertilizers. The results revealed that the adopted scheme outperforms in terms of computational time compared to the existing authentication protocols. Then, [PERSON] et al. [31] focused on centralized, opaque, and untrustworthy data storage issues for horticulture products. To overcome the aforementioned issues, they introduced a traceability system (e.g., on- and off-chain traceability) using a dual storage within the blockchain. They utilized cryptography-based elliptic curves with blockchain for safe data sharing. Moreover, they proposed a reputation-based smart contract to upload traceability information from the node. Their simulation results enhance efficiency and guarantee the agriculture data's reliability, security, and authenticity. Nevertheless, the aforesaid applications require superlative care from criminal activities, natural calamities (e.g., fire, earthquake, etc. ), terrorist attacks, and riots. For example, if a person driving a smart vehicle meets with a road accident, it can use V2V communication to share this information with the emergency medical response team. Similarly, UAV communication can assist V2V communication in sharing this information with nearby hospitals to provide emergency medical care. Another scenario is where smart manufacturing requires on-site maintenance to clean and repair various critical equipment of the manufacturing organization. This is challenging for a person to perform on-site maintenance because the manufacturing vessels and equipment are highly hazardous (i.e., radioactive) to human health. Further, a criminal attempt to commit a crime (e.g., stealing, murder, kidnapping, etc.) in the smart city must be captured under the jurisdiction. Therefore, the government and local organizations must offer an emergency response, disaster risk management, and criminal investigation teams under the umbrella of public safety applications to protect the wellbeing of the nation's citizens who are using the abovementioned applications.