A dynamic Trust Management Model for Healthcare Supply Chain Based on Blockchain Technology

With the increasing requirements for supply chain security, traceability and efficiency in the healthcare industry, existing centralized or decentralized management systems show obvious limitations in dynamic environments, especially in terms of inflexible rights management, inefficient data sharing and insufficient system transparency. In order to solve these problems, this paper proposes a multi-user rights-confirmation and responsibility assignment method based on dynamic access control and smart contracts. The method ensures the security and transparency of supply chain data by dynamically evaluating user role attributes and behavioral patterns, and recording and adj usting permissions in real time using smart contracts. The experiments are conducted in a blockchain environment, and the results show that the method significantly improves the supply chain data sharing efficiency and system transparency, enhances the responsiveness to market changes, and improves the overall security and risk management level at the same time.