Journal of Intelligent Systems and Internet of Things JISIoT 2690-6791 2769-786X 10.54216/JISIoT https://www.americaspg.com/journals/show/3953 2019 2019 Dept. of Computer Science and Engg, B.S.Abdur Rahman Crescent Institute of Science and Technology, India R. R. Dept. of Computer Applications, B.S. Abdur Rahman Crescent Institute of Science and Technology, India S. Amsavalli Dept. of Computer Science and Engg, B.S.Abdur Rahman Crescent Institute of Science and Technology, India Kamarunnisha. H. Dept. of Computer Science and Engg, B.S.Abdur Rahman Crescent Institute of Science and Technology, India Vetripriya. M. Dept. of Networking and Communications, SRM Institute of Science and Technology, Kattankulathur, India Tamilselvi. S. The transition from 5G to 6G wireless communication systems introduces new challenges, including scalability, privacy, and security. DLT (Distributed Ledger Technology) technology, with its decentralized and secure framework, offers a promising solution to address these issues in a 6G context. In a 6G environment, DLT can facilitate decentralized management, secure authentication, and trusted data exchanges. By leveraging DLT's distributed ledger system, it can support device identity verification, spectrum allocation, and secure data sharing across nodes, creating a trustworthy communication ecosystem. DLT and 6G integration enables efficient spectrum management, where smart contracts automate resource allocation, reducing bottlenecks and improving resource efficiency. Moreover, the decentralized nature of DLT enhances privacy and security by providing an authentication mechanism that works without central authority. This is crucial, as 6G will involve a vast number of connected devices. This research aims to explore the role of DLT in improving the security and scalability of 6G networks, investigate spectrum management techniques, and evaluate decentralized device authentication and trust mechanisms. Additionally, challenges such as latency, scalability, and DLT integration in 6G are examined. DLT's decentralized nature aids in network security and robustness, mitigating vulnerabilities by distributing control across nodes. It also streamlines resource allocation and device authentication, improving privacy. DLT enables users to manage access rights through decentralized mechanisms, fostering trust and compliance with privacy regulations. However, issues like latency due to transaction validation and the need for advanced techniques like sharding are challenges that must be addressed to optimize DLT for 6G applications. 2026 2026 298 308 10.54216/JISIoT.180123 https://www.americaspg.com/articleinfo/18/show/3953