Cited by 1,246Blockchain Technology Applications and SecurityIoT and Edge/Fog ComputingInternet of Things and AI

Blockchain for internet of things: a survey

Open access
Dai, Hong-Ning, Zheng, Zibin, Zhang, Yan·2019·IEEE Internet of Things Journal

Abstract

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.

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Registry

Crossref · 10.1109/jiot.2019.2920987

Cites

114 of 114 references verified0 citation errors · 0 not checkable

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  • In supply chain management, blockchain-powered IoT solutions enhance transparency by tracking movement of goods and ensuring product origins, quality, and ethical sourcing throughout the supply chain.

    “In supply chain management, blockchain-powered IoT solutions enhance transparency by tracking the movement of goods and ensuring product origins, quality, and ethical sourcing throughout the entire supply chain, as demonstrated by various pilot projects [16].”

    From IoT and Blockchain for Support for Smart Contracts Through TpM (2025) · cites this paper as [16]

    The Supply chain management section (p. 12) describes blockchain–IoT identification of parts as tamper-resistant and traceable, while the Food industry section (p. 12) describes tracing products from their sources and inspecting quality. These passages support transparency, provenance, and quality checks, but do not establish ethical sourcing or demonstrate those benefits throughout the entire supply chain. The paper discusses proposals and a prototype, rather than identifying them collectively as pilot projects. (LLM, conf=0.88)

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  • Blockchain's permission management capabilities empower users with greater control over their data, enhancing data ownership and privacy.

    “In addition, users are empowered with greater control over their data through blockchain’s permission management capabilities.”

    From IoT and Blockchain for Support for Smart Contracts Through TpM (2025) · cites this paper as [16]

    The Taxonomy of Blockchain Systems (p. 7) says private and consortium blockchains can assign users different levels of permission to read data or initiate transactions. It does not say that users themselves manage those permissions or thereby gain greater control or ownership of their data. The discussion of privacy in Key Characteristics (p. 5) also cautions that blockchain provides only limited privacy. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • Data collected by sensors can trigger execution of smart contracts, eliminating manual intervention and potential human error.

    “Data collected by sensors can trigger the execution of smart contracts, eliminating the need for manual intervention and potential human error.”

    From IoT and Blockchain for Support for Smart Contracts Through TpM (2025) · cites this paper as [16]

    The Smart Contract section (p. 6) says that satisfying a condition automatically executes the corresponding contract function, and the Introduction (p. 1) links smart contracts to IoT interactions without human intervention. The cited passages do not specify that sensor-collected data triggers execution or say that automation eliminates potential human error. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Integrating smart contracts with IoT devices enables secure and automated decision-making based on predefined conditions.

    “Integrating smart contracts with IoT devices enables secure and automated decision-making based on predefined conditions.”
  • IoT devices are equipped with limited bandwidth capabilities.

    “IoT devices are equipped with limited bandwidth capabilities [288].”

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Research works printed but not linked: 9

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Authors
Dai, H.-N., Zheng, Z., & Zhang, Y.
Affiliations
  • Macau University of Science and Technology (MO)
  • Sun Yat-sen University (CN)
  • Simula Metropolitan Center for Digital Engineering (NO)
Venue
IEEE Internet of Things Journal
Published
2019-10
Volume
6
Issue
5
Pages
8076-8094
ISSN
  • 2327-4662 (ISSN-L)
  • 2372-2541
OpenAlex
W2947690458
Cited by
1,246
References
114
Citations by year
2026: 59 · 2025: 115 · 2024: 175 · 2023: 241 · 2022: 243 · 2021: 232 · 2020: 161 · 2019: 20
FWCI
204.06
Type
journal article
Language
en
Open access
Locations
  • IEEE Internet of Things Journal (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • National Basic Research Program of China (2016YFB1000101)
  • National Natural Science Foundation of China (61722214, U1811462)
  • Macao Science and Technology Development Fund (0026/2018/A1)
  • Program for Guangdong Introducing Innovative and Entrepreneurial Teams (2016ZT06D211)
  • European Union’s Horizon 2020 Research and Innovation Programme through the Marie Skłodowska-Curie (824019)
Topics
  • Physical Sciences › Computer Science › Information Systems › Blockchain Technology Applications and Security
  • Physical Sciences › Computer Science › Computer Networks and Communications › IoT and Edge/Fog Computing
  • Physical Sciences › Computer Science › Information Systems › Internet of Things and AI
Keywords
blockchain, Internet of Things, Internet of Things security, IoT privacy, interoperability, decentralization (distributed systems)

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