Blockchain for Internet of Things: A Survey

Hong Ning Dai, Zibin Zheng, Yan Zhang*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

774 Citations (Scopus)


Internet of Things (IoT) is reshaping the incumbent industry to smart industry featured with data-driven decision-making. However, intrinsic features of IoT result in a number of challenges, such as decentralization, poor interoperability, privacy, and security vulnerabilities. Blockchain technology brings the opportunities in addressing the challenges of IoT. In this paper, we investigate the integration of blockchain technology with IoT. We name such synthesis of blockchain and IoT as blockchain of things (BCoT). This paper presents an in-depth survey of BCoT and discusses the insights of this new paradigm. In particular, we first briefly introduce IoT and discuss the challenges of IoT. Then, we give an overview of blockchain technology. We next concentrate on introducing the convergence of blockchain and IoT and presenting the proposal of BCoT architecture. We further discuss the issues about using blockchain for fifth generation beyond in IoT as well as industrial applications of BCoT. Finally, we outline the open research directions in this promising area.

Original languageEnglish
Pages (from-to)8076-8094
Number of pages19
JournalIEEE Internet of Things Journal
Issue number5
Publication statusPublished - Oct 2019
Externally publishedYes

Scopus Subject Areas

  • Signal Processing
  • Information Systems
  • Hardware and Architecture
  • Computer Science Applications
  • Computer Networks and Communications

User-Defined Keywords

  • Blockchain
  • industrial applications
  • Internet of Things (IoT)
  • smart contract


Dive into the research topics of 'Blockchain for Internet of Things: A Survey'. Together they form a unique fingerprint.

Cite this