Convergence of blockchain and artificial intelligence in IoT network for the sustainable smart city

Saurabh Singh, Pradip Kumar Sharma, Byungun Yoon*, Mohammad Shojafar, Gi Hwan Cho, In Ho Ra

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

250 Citations (Scopus)


In the digital era, the smart city can become an intelligent society by utilizing advances in emerging technologies. Specifically, the rapid adoption of blockchain technology has led a paradigm shift to a new digital smart city ecosystem. A broad spectrum of blockchain applications promise solutions for problems in areas ranging from risk management and financial services to cryptocurrency, and from the Internet of Things (IoT) to public and social services. Furthermore, the convergence of Artificial Intelligence (AI) and blockchain technology is revolutionizing the smart city network architecture to build sustainable ecosystems. However, these advancements in technologies bring both opportunities and challenges when it comes to achieving the goals of creating a sustainable smart cities. This paper provides a comprehensive literature review of the security issues and problems that impact the deployment of blockchain systems in smart cities. This work presents a detailed discussion of several key factors for the convergence of Blockchain and AI technologies that will help form a sustainable smart society. We discuss blockchain security enhancement solutions, summarizing the key points that can be used for developing various blockchain-AI based intelligent transportation systems. Also, we discuss the issues that remain open and our future research direction, this includes new security suggestions and future guidelines for a sustainable smart city ecosystem.

Original languageEnglish
Article number102364
Number of pages16
JournalSustainable Cities and Society
Early online date1 Jul 2020
Publication statusPublished - Dec 2020

Bibliographical note

This work was supported by the Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIT) (No. 2018-0-00508), Development of blockchain-based embedded devices and platform for M.G. security and operational efficiency. This work was supported in part by KETEP (No. 20194010201800) of the Korean Government, Ministry of Trade, Industry, and Energy (MOTIE).


  • Artificial intelligence
  • Blockchain
  • Intelligence transport system
  • Internet of things
  • Security
  • Sustainable smart city


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