The integration of blockchain technology into DC microgrids represents a groundbreaking development in the field of energy management and security. This chapter of the book provides a comprehensive overview of the potential applications, benefits, and challenges of blockchain technology in the context of DC microgrids. The chapter begins by examining the fundamental principles of DC microgrids and their importance in enhancing energy efficiency and reliability, particularly in remote or off-grid locations. It then delves into the core concepts of blockchain technology, highlighting its decentralized nature, immutability, and transparency, which make it an ideal solution for addressing key issues in DC microgrid management. Despite its numerous advantages, the chapter also addresses the challenges and limitations of implementing blockchain in DC-microgrids. It concludes with a forward-looking perspective on the future of blockchain technology in DC microgrids, emphasizing the need for interdisciplinary research and collaborative efforts to unlock its full potential.