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

What is solidity?

Solidity is a statically typed contract language that contains state variables, functions, and common data types. Developers are able to write decentralized applications (DApps) that implement business logic functions in a smart contract. The contract verifies and enforces the constraints at compile time, as opposed to runtime. Solidity is compiled to EVM executable byte code. Once compiled, the contracts are uploaded to the Ethereum network. The blockchain will assign an address to the smart contract. Any permissioned user on the blockchain network can call a contract function to execute the smart contract. 

Here is a typical flow diagram showing the process from writing contract code to deploying and running it on the Ethereum network: