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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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Proceedings ArticleDOI

SPROOF: A Platform for Issuing and Verifying Documents in a Public Blockchain

TL;DR: In this article, the authors present SPROOF, a platform for issuing, managing and verifying digital documents in a public blockchain, where all data needed for verification of documents and issuers is stored decentralized, transparent, and integrity protected.
Journal ArticleDOI

Big data security challenges and strategies

TL;DR: The current trends in big data comprehensively are established by identifying eleven Vs as important dimensions of big data, which form the contributing factors having an impact on the impending security problem, and four practical strategies adapted from contemporary technologies are provided.
Proceedings ArticleDOI

LightChain: On the Lightweight Blockchain for the Internet-of-Things

TL;DR: This work presents an approach where IoT devices can combine their resources to solve PoW puzzles that they might not have been able to solve on their own to ensure a successful merger between the blockchain and the IoT.
Proceedings ArticleDOI

Blockchains as Enablers for Auditing Cooperative Circular Economy Networks

TL;DR: A collaborative circular economy business model is proposed, where the circular economy cycle is materialized by assets transitioning between asset operators on a demanddriven approach.
Book ChapterDOI

A Framework for Supply Chain Traceability Based on Blockchain Tokens

TL;DR: This paper proposes a forensics-by-design supply chain traceability framework with audit trails for integrity and provenance guarantees based on malleable blockchain tokens, which provides the establishment of different granularity levels for tracing products across the entire supply chain based on their unique characteristics, supply chain processes and stakeholders engagement.
References
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Journal ArticleDOI

The Byzantine Generals Problem

TL;DR: The Albanian Generals Problem as mentioned in this paper is a generalization of Dijkstra's dining philosophers problem, where two generals have to come to a common agreement on whether to attack or retreat, but can communicate only by sending messengers who might never arrive.
Book ChapterDOI

The Byzantine generals problem

TL;DR: In this article, a group of generals of the Byzantine army camped with their troops around an enemy city are shown to agree upon a common battle plan using only oral messages, if and only if more than two-thirds of the generals are loyal; so a single traitor can confound two loyal generals.
Book ChapterDOI

The Sybil Attack

TL;DR: It is shown that, without a logically centralized authority, Sybil attacks are always possible except under extreme and unrealistic assumptions of resource parity and coordination among entities.
Proceedings ArticleDOI

Practical Byzantine fault tolerance

TL;DR: A new replication algorithm that is able to tolerate Byzantine faults that works in asynchronous environments like the Internet and incorporates several important optimizations that improve the response time of previous algorithms by more than an order of magnitude.
Proceedings Article

In search of an understandable consensus algorithm

TL;DR: Raft is a consensus algorithm for managing a replicated log that separates the key elements of consensus, such as leader election, log replication, and safety, and it enforces a stronger degree of coherency to reduce the number of states that must be considered.
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