Concept of Blockchain Technology and Its Emergence

Author(s):  
Padmavathi U. ◽  
Narendran Rajagopalan

Blockchain refers to a distributed ledger technology that helps people to regulate and manage their information without any intermediaries. This technology emerges as a promising panacea for authentication and authorization with potential for use in every possible domain including financial, manufacturing, educational institutions, etc. Blockchain has its birth through the concept of Bitcoin, a digital cryptocurrency by Satoshi Nakamoto, called as Blockchain 1.0. Blockchain 2.0 came into existence in 2014 with Ethereum and smart contracts. The challenges such as scalability, interoperability, sustainability, and governance led to the next generation of Blockchain also called as IOTA, a blockchainless cryptocurrency for the internet of things runs on the top of their own ledger called Tangle, which is immune towards quantum computers. This disruptive technology evolved to provide cross chain support and more security through Blockchain 4.0. Finally, the chapter concludes by discussing the various applications of this technology and its advantages and security issues.

Author(s):  
Goldby Miriam

The inefficiencies inherent in processing pieces of paper manually down a cross-border chain of sales have prompted the international trade community to attempt to replace bills of lading with digital alternatives. These efforts have been ongoing for thirty years, but the recent availability of new technologies, particularly distributed-ledger technology (‘DLT’), which can be used in combination with ‘smart contracts’, the internet of things (‘IoT’) and machine-learning, has given these efforts a new impetus. Digitalisation holds many promises, including the creation of a context wherein new and cheaper financing options may be developed that do not involve manual checking of large volumes of paper documents. However, doing away with the paper-based documents of title creates uncertainties in terms of the bank’s position as secured creditor. Similarly, while cargo insurance certificates have been issued over electronic platforms for many years now, their transfer by endorsement is still effected by printing the certificate out and endorsing the paper-based certificate. In order for the benefits of digitalisation to be reaped in full, cargo insurance certificates also need to be fully digitalised, which would in turn raise questions as to the bank’s position as assured under the insurance contract. This chapter will examine the options available for making the bank’s position more certain. These options include legislative intervention and the development of contractual frameworks governed by English law.


2018 ◽  
Vol 35 (2) ◽  
pp. 40-47
Author(s):  
S. M. Doguchaeva

The era of digital transformation provides the opportunity for leading companies to change priorities - to begin to take care of the support environment using innovative technologies and become a leading creative platform open for innovation. The successful development of the digital world, the blockchain technology, the Internet of things – the mechanism which will change the financial world. 


Author(s):  
Issmat Shah Masoodi ◽  
Bisma Javid

There are various emerging areas in which profoundly constrained interconnected devices connect to accomplish specific tasks. Nowadays, internet of things (IoT) enables many low-resource and constrained devices to communicate, do computations, and make smarter decisions within a short period. However, there are many challenges and issues in such devices like power consumption, limited battery, memory space, performance, cost, and security. This chapter presents the security issues in such a constrained environment, where the traditional cryptographic algorithms cannot be used and, thus, discusses various lightweight cryptographic algorithms in detail and present a comparison between these algorithms. Further, the chapter also discusses the power awakening scheme and reference architecture in IoT for constrained device environment with a focus on research challenges, issues, and their solutions.


Author(s):  
Raja Jayaraman ◽  
Khaled Salah ◽  
Nelson King

Despite key advances in healthcare informatics and management, little progress to address supply chain process-related problems has been made to date. Specifically, key healthcare supply chain processes include product recalls, monitoring of product supply shortages, expiration, and counterfeits. Implementing and executing these processes in a trusted, secure, efficient, globally accessible and traceable manner is challenging due to the fragmented nature of the healthcare supply chain, which is prone to systemic errors and redundant efforts that may compromise patient safety and impact health outcomes adversely. Blockchain, combined with the Internet of things (IoT), is an emerging technology that can offer a practical solution to these challenges. Accordingly, IoT blockchain offers a superior way to track and trace products via a peer-to-peer distributed, secure, and shared ledger of the blockchain network. This article highlights key challenges related to healthcare supply chains, and illustrates how IoT blockchain technologies can play a role in overcoming these challenges now and in the near future.


2018 ◽  
Vol 7 (4.36) ◽  
pp. 700
Author(s):  
N. Koteswara Rao ◽  
Gandharba Swain

The proliferation of smart objects with capability of sensing, processing and communication has grown in recent years. In this scenario, the Internet of Things (IoT) connects these objects to the Internet and provides communication with users and devices. IoT enables a huge amount of new applications, with which academics and industries can benefit, such as smart cities, health care and automation. In this environment, compose of constrained devices, the widespread adoption of this paradigm depends of security requirements like secure communication between devices, privacy and anonymity of its users. This paper presents the main security challenges and solutions to provide authentication and authorization on the Internet of Things. 


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