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Blockchain By Example

Blockchain By Example

By : Badr, Horrocks, Xun (Brian) Wu
4 (2)
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Blockchain By Example

Blockchain By Example

4 (2)
By: Badr, Horrocks, Xun (Brian) Wu

Overview of this book

The Blockchain is a revolution promising a new world without middlemen. Technically, it is an immutable and tamper-proof distributed ledger of all transactions across a peer-to-peer network. With this book, you will get to grips with the blockchain ecosystem to build real-world projects. This book will walk you through the process of building multiple blockchain projects with different complexity levels and hurdles. Each project will teach you just enough about the field's leading technologies, Bitcoin, Ethereum, Quorum, and Hyperledger in order to be productive from the outset. As you make your way through the chapters, you will cover the major challenges that are associated with blockchain ecosystems such as scalability, integration, and distributed file management. In the concluding chapters, you’ll learn to build blockchain projects for business, run your ICO, and even create your own cryptocurrency. Blockchain by Example also covers a range of projects such as Bitcoin payment systems, supply chains on Hyperledger, and developing a Tontine Bank Every is using Ethereum. By the end of this book, you will not only be able to tackle common issues in the blockchain ecosystem, but also design and build reliable and scalable distributed systems.
Table of Contents (13 chapters)
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Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
Say Hello to Blockchain
Say Hello to Blockchain
The emergence of blockchain and cryptocurrency
Interact with the blockchain
Types of blockchains
Summary
2
Building a Bitcoin Payment System
Building a Bitcoin Payment System
What is Bitcoin?
Getting started with Bitcoin
Building a payment gateway
Payment protocol using BitcoinJ
Bitcoin smart contracts
Summary
3
Building Your Own Cryptocurrency
Building Your Own Cryptocurrency
Compiling Bitcoin from source
New cryptocurrency – Readercoin
Summary
4
Peer-to-Peer Auctions in Ethereum
Peer-to-Peer Auctions in Ethereum
Introduction to Ethereum
Building an auction DApp
Deployment environment – multiple ways to enjoy!
Running the auction DApp
Summary
5
Tontine Game with Truffle and Drizzle
Tontine Game with Truffle and Drizzle
Background
Truffle quick start
The Tontine contract
Cplayer as a CRUD contract
Tontine interfaces – Itontine
Interface implementation – Ctontine contract
Truffle unit tests
Frontend with Drizzle
Trying the DApp
Summary
6
Blockchain-Based Futures System
Blockchain-Based Futures System
Project presentation
Futures smart contract
Web3j
Java client
Summary
7
Blockchains in Business
Blockchains in Business
Public versus private and permissioned versus permissionless blockchains
Privacy and anonymity in Ethereum
Why are privacy and anonymity important?
The Ethereum Enterprise Alliance
Blockchain-as-a-Service
Quorum
Summary
8
Creating an ICO
Creating an ICO
What is an ICO?
Project setup
Token contracts
Token sale contracts
Implementing our token sale contract
Contract security
Testing the code
Deploying to a test network
Verifying our contract code on Etherscan
Creating a frontend website
Summary
Suggestions for further work
9
Distributed Storage IPFS and Swarm
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Distributed Storage IPFS and Swarm
Background
Swarm and IPFS
Hosting our frontend
IPFS file uploader project
Summary
10
Supply Chain on Hyperledger
Supply Chain on Hyperledger
Food industry supply chain
Quick Hyperledger overview
Setting up the development environment
Fabric's Chaincode
Building a business network
Chaincode compilation and deployment
Running the project
Summary
11
Letter of Credit (LC) Hyperledger
Letter of Credit (LC) Hyperledger
LC concepts and design
Development environment
Creating a composer Fabric application
LC business network
Deploying the LC
Hyperledger Fabric on IBM Cloud
Summary
12
Other Books You May Enjoy
Other Books You May Enjoy
Leave a review - let other readers know what you think

Summary

In this chapter, we introduced the idea of complimenting a decentralized blockchain data layer with a decentralized storage layer, in the form of either IPFS or Swarm. We described the installation and basic uses of both technologies, before moving on to the more involved process of hosting our ICO website.

Finally, we introduced a very simple example of how the IPFS API can be used programmatically.

End of Chapter 9
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