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Blockchains and Smart Contracts for the Internet of Things

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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

SCAB - IoTA: Secure communication and authentication for IoT applications using blockchain

TL;DR: In this paper, the authors proposed an efficient method known as SCAB-IoTA, which ensures identification and authentication of IoT devices and also provides secure communication in the open environment.
Journal ArticleDOI

Secured by Blockchain: Safeguarding Internet of Things Devices

TL;DR: In this paper, the authors consider possible use cases and applications of the blockchain for the consumer electronics (CE) industry and its interplay with the Internet of things, and they focus on how it could be employed for enhancing the security of networked CE devices.
Journal ArticleDOI

Innovation and Challenges of Blockchain in Banking: A Scientometric View

TL;DR: The present study poses 3 empirical research questions: which are the current technologies within the blockchain ecosystem for competitive advantage to banking institutions, and how will blockchain based digital platforms transform existing value-creating interactions.
Journal ArticleDOI

The case for blockchain in IoT identity management

TL;DR: This paper describes the most relevant IdM systems focusing on privacy preserving with or without blockchain and evaluates them against ten selected features grouped into three categories: privacy, usability and IoT.
Journal ArticleDOI

Securing MQTT by Blockchain-Based OTP Authentication.

TL;DR: A novel OTP (one-time password)-authentication schema for MQTT is proposed, which uses the Ethereum blockchain to implement a second-factor out-of-band channel and enables the authentication of both local and remote devices preserving user privacy and guaranteeing trust and accountability via Ethereum smart contracts.
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