Evolution and Innovation of Blockchain Paradigms for the 6G Ecosystem

The evolution of the sixth-generation (6G) begins with the fifth-generation (5G) giving up on the urges of the super Internet of Things (IoT) business models. Currently, networks are controlled through a centralized server owned by a single person or entity. This convolutional centralized authentication and access control led to scalability and transparency issues. In the blockchain, the data is stored in a decentralized distributed manner, which offers sophisticated access mechanisms for future consumers in 6G networks and avoids the disadvantages of single point of failure. Developing new innovative models in various sectors requires distributed decentralized authentic access and quick dynamic access. This chapter discusses the blockchain paradigms with 6G technology in multiple realms, with innovative decentralized architectures in multicross industries, and enhances security access in new integrated network architectures like IoT, device-to-device(D2D), machine-to-machine(M2M), smart city, artificial intelligence, and machine learning (ML).