Cloud computing stores consumer data on third-party servers and provides high-quality, high-performance services. Innovative cloud computing offers flexible infrastructure and simple access, but security challenges persist. Blockchain design uses distributed ledgers to store transaction information across network nodes. Consensus processes verify all system transactions and prevent data changes. Literature study and bibliometric assessment are used to evaluate blockchain-based authentication methods from 2018 to 2023. We evaluate the amount and quality of empirical evidence on blockchain-based authentication and access control solutions. The experts believed that this study topic is vital and may assist future scholars in connecting information and technology. This research may interest blockchain technology researchers and practitioners interested in notable people, subjects, and historical events. Journal articles, conference papers, and book chapters have a worldwide impact on research communities, according to this bibliometric analysis. R bibliometric studies and their methods are described in this article. Visualization clarifies many cloud authentication research topics.