Book Image

Blockchain Quick Start Guide

By : Xun (Brian) Wu, Weimin Sun
Book Image

Blockchain Quick Start Guide

By: Xun (Brian) Wu, Weimin Sun

Overview of this book

Blockchain is a technology that powers the development of decentralized applications.This technology allows the construction of a network with no single control that enables participants to make contributions to and receive benefits from the network directly. This book will give you a thorough overview of blockchain and explain how a blockchain works.You will begin by going through various blockchain consensus mechanisms and cryptographic hash functions. You will then learn the fundamentals of programming in Solidity – the defacto language for developing decentralize, applications in Ethereum. After that, you will set up an Ethereum development environment and develop, package, build, and test campaign-decentralized applications.The book also shows you how to set up Hyperledger composer tools, analyze business scenarios, design business models, and write a chain code. Finally, you will get a glimpse of how blockchain is actually used in different real-world domains. By the end of this guide, you will be comfortable working with basic blockchain frameworks, and develop secure, decentralized applications in a hassle-free manner.
Table of Contents (14 chapters)
Title Page
Copyright and Credits
About Packt

DApp use case – healthcare data sharing

In this subsection, we look at one use case in more detail and talk about steps leading to the implementation of a DApp. The use case of healthcare data sharing will be examined further. Here, only ideas are discussed, which are not necessarily implementable. Most of the discussions focus on business and architectural considerations.  

The business problem

Before getting to implementing a DApp, one should start with the business problem by asking questions such as What are the challenges or the pain points? In the case of healthcare data, examples of challenges are as follows:

  • Digitization: Many patients' medical records are available only on paper. This is particularly true for family physician offices, which are usually small. When a patient visits a physician's office, it is still a common scene for a doctor's office receptionist to search the file cabinets and pull out a folder with the patient's medical history. The records are then handed over to...