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Open AccessJournal ArticleDOI

Blockchains and Smart Contracts for the Internet of Things

TLDR
The conclusion is that the blockchain-IoT combination is powerful and can cause significant transformations across several industries, paving the way for new business models and novel, distributed applications.
Abstract
Motivated by the recent explosion of interest around blockchains, we examine whether they make a good fit for the Internet of Things (IoT) sector. Blockchains allow us to have a distributed peer-to-peer network where non-trusting members can interact with each other without a trusted intermediary, in a verifiable manner. We review how this mechanism works and also look into smart contracts—scripts that reside on the blockchain that allow for the automation of multi-step processes. We then move into the IoT domain, and describe how a blockchain-IoT combination: 1) facilitates the sharing of services and resources leading to the creation of a marketplace of services between devices and 2) allows us to automate in a cryptographically verifiable manner several existing, time-consuming workflows. We also point out certain issues that should be considered before the deployment of a blockchain network in an IoT setting: from transactional privacy to the expected value of the digitized assets traded on the network. Wherever applicable, we identify solutions and workarounds. Our conclusion is that the blockchain-IoT combination is powerful and can cause significant transformations across several industries, paving the way for new business models and novel, distributed applications.

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Citations
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Journal ArticleDOI

A Novel Blockchain-Based Product Ownership Management System (POMS) for Anti-Counterfeits in the Post Supply Chain

TL;DR: This paper proposes a novel product ownership management system (POMS) of RFID-attached products for anti-counterfeits that can be used in the post supply chain and implements a proof-of-concept experimental system employing a blockchain-based decentralized application platform, Ethereum.
Journal ArticleDOI

A blockchain future for internet of things security: a position paper

TL;DR: The potential for blockchain technology in facilitating secure sharing of IoT datasets and securing IoT systems is posited, before presenting two conceptual blockchain-based approaches.
Journal ArticleDOI

When Mobile Blockchain Meets Edge Computing

TL;DR: A novel concept of edge computing for mobile blockchain and an economic approach for edge computing resource management are introduced and a prototype of mobile edge computing enabled blockchain systems are presented with experimental results to justify the proposed concept.
Journal ArticleDOI

A Review of Smart Cities Based on the Internet of Things Concept

TL;DR: Some practical experiences all across the world and the key barriers to its implementation are thoroughly expressed and the potential application of smart cities with respect to technology development in the future provides another valuable discussion in this paper.
Journal ArticleDOI

Towards Secure Industrial IoT: Blockchain System With Credit-Based Consensus Mechanism

TL;DR: This work proposes a credit-based proof-of-work (PoW) mechanism for IoT devices, which can guarantee system security and transaction efficiency simultaneously, and designs a data authority management method to regulate the access to sensor data.
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