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Blockchain and IoT-Challenges and Its Role in Security: A Brief Overview

Abstract:

Versatility is the main intrinsic characteristic of Blockchain, making this technology applicable to a great variety of fields such as Agriculture, Healthcare, Artificial Intelligence, Smart Cities, and many others, all of them within the Internet of Things environment and aimed to its integration. This paper presents a detailed review of IoT fields in which Blockchain is currently being applied, the challenges they face towards their integration, and the current role of Blockchain concerning the security environment. The authors used inclusion and exclusion criteria, and as a result, 164 articles ranging from 2018 to 2021 were utilized to fulfill this objective. Additionally, the authors found 11 environments where Blockchain is being integrated. Moreover, a quantitative study was carried out to determine which of the challenges are the focus of attention.