Optimizing the Rice Supply Chain with Blockchain An Analysis Based on Feng Xingyuan's Theory

With the application and development of big data technology, blockchain technology has emerged as a key solution for optimizing traditional rice supply chains and ensuring food security, leveraging its traceability and anti-counterfeiting features in supply chain applications. This paper analyzes the compatibility and feasibility of blockchain technology with rice supply chains based on Feng Xingyuan’s "Institution-Knowledge-Competition" theory. It proposes a tripartite financial framework, "Commercial NFT Warehouse Receipt Pledging, Cooperative Rice Point Mutual Aid, and Policy-Driven Smart Contract Subsidies", to reduce transaction costs across the entire closed-loop process of contract signing, fulfillment, and breach. Practical case studies validate the "dual-threshold" effect of government subsidy intensity and core node endorsement on technology implementation. Finally, targeted risk prevention strategies are proposed, addressing technical, financial, and institutional risks. The study demonstrates that blockchain technology significantly enhances supply chain node efficiency, with future value further unlocked through measures like technological integration and currency fusion, offering actionable solutions for food security.