Development and Application of Blockchain Technology in the Context of IPv6

With the comprehensive evolution of the Internet from IPv4 to IPv6, IPv6 has provided a solid infrastructure for the transformation of modern information technology with its nearly infinite address space, inherent security mechanisms, and efficient routing characteristics. At the same time, blockchain technology, characterized by decentralization, data immutability, and traceability, has shown great application potential in the field of agricultural informatization. However, the NAT (Network Address Translation) mechanism under traditional IPv4 networks limits the communication efficiency and direct connection capability of blockchain P2P (peer-topeer) networks. This paper first systematically expounds on the core technical architectures of blockchain and IPv6, and deeply analyzes the empowerment mechanism of IPv6 for the blockchain network layer, node management, data transmission, and security. On this basis, it focuses on the innovative application of this fusion technology in the field of agricultural informatization, including building an end-to-end trustworthy agricultural product traceability system, managing large-scale smart agricultural IoT devices, and optimizing agricultural supply chain financial services. Finally, this paper analyzes the challenges of compatibility, security, privacy, and standard promotion faced by technology fusion, and prospects for future development trends. Research shows that the deep integration of IPv6 and blockchain can effectively solve the trust problems and data silo dilemmas in current agricultural informatization construction, and is a key technical path to promote China's agricultural modernization and digital village construction.