Design of Logistics Tracking System and Data Security Analysis Based on Blockchain Technology

This article aims to design and implement a logistics tracking system based on blockchain technology to solve the challenges of information asymmetry, difficult tracking and data security in traditional logistics tracking systems. In terms of methods, this article follows the core principles of security, reliability, scalability and ease of use, and designs a logistics tracking system based on blockchain technology. The system adopts hierarchical architecture, including blockchain layer, data layer, business logic layer and application layer, and all layers communicate with each other through clear interfaces, thus realizing the modularization and expansibility of the system. At the same time, this article uses the open source blockchain platform as the underlying support, and combines the actual business needs to carry out customized development, designs intelligent contracts to automatically implement the contract terms in the logistics process, and develops data access interfaces and query services. Through the system test, this article verifies the feasibility of the logistics tracking system based on blockchain technology. The test results show that the system can realize the traceability, transparency, safety and reliability of logistics information, and improve logistics efficiency and customer satisfaction.