Wireless sensor networks (WSNs), as an integral part of most Internet of Things (IoT) devices, are currently proliferating providing a new paradigm of emerging technologies. It is estimated that the number of globally connected products will increase exponentially in the next decade. Therefore, it is not surprising finding applications in different areas such as smart homes, smart cities, industry, e-health, defense, security, vehicle networks, agriculture, and logistics among others. WSNs transmit the information gathered by the existing sensors in the IoT devices to header nodes acting as gateways to reach cloud computing nodes that will process this information. The processing of the data gathered through the sensors has made it possible to provide intelligence in strategical environments such as in the agrifood sector. Securing how this information is transmitted and assuring the integrity of the information is preserved. The use of blockchain technology has proven to be effective for securing the integrity of data transactions among entities. In this paper, we seize the advantage of this circumstance to design a robust mechanism based on smart contracts and blockchain technology that allow the reliable processing of data.

作为大多数物联网（IoT）设备不可或缺的一部分，无线传感器网络（WSN）目前正在迅速发展，提供了新兴技术的新范例。据估计，在未来十年中，全球连接产品的数量将成倍增加。因此，在诸如智能家居，智能城市，工业，电子医疗，国防，安全，车辆网络，农业和物流等不同领域中找到应用并不奇怪。WSN将物联网设备中现有传感器收集的信息传输到充当网关的标头节点，以到达将处理此信息的云计算节点。通过传感器收集的数据的处理使得有可能在战略环境（例如农业食品领域）中提供情报。保证了如何传输此信息并确保了信息的完整性。事实证明，使用区块链技术可有效确保实体之间数据交易的完整性。在本文中，我们抓住了这种情况的优势，基于智能合约和区块链技术设计了一种鲁棒的机制，以实现可靠的数据处理。