Stay up-to-date with everything you need to know about the blockchain ecosystem
Implement smart contracts, wallets, and decentralized applications(DApps) using Python libraries
Get deeper insights into storing content in a distributed storage platform

Description

Blockchain is seen as the main technological solution that works as a public ledger for all cryptocurrency transactions. This book serves as a practical guide to developing a full-fledged decentralized application with Python to interact with the various building blocks of blockchain applications. Hands-On Blockchain for Python Developers starts by demonstrating how blockchain technology and cryptocurrency hashing works. You will understand the fundamentals and benefits of smart contracts such as censorship resistance and transaction accuracy. As you steadily progress, you'll go on to build smart contracts using Vyper, which has a similar syntax to Python. This experience will further help you unravel the other benefits of smart contracts, including reliable storage and backup, and efficiency. You'll also use web3.py to interact with smart contracts and leverage the power of both the web3.py and Populus framework to build decentralized applications that offer security and seamless integration with cryptocurrencies. As you explore later chapters, you'll learn how to create your own token on top of Ethereum and build a cryptocurrency wallet graphical user interface (GUI) that can handle Ethereum and Ethereum Request for Comments (ERC-20) tokens using the PySide2 library. This will enable users to seamlessly store, send, and receive digital money. Toward the end, you'll implement InterPlanetary File System (IPFS) technology in your decentralized application to provide a peer-to-peer filesystem that can store and expose media. By the end of this book, you'll be well-versed in blockchain programming and be able to build end-to-end decentralized applications on a range of domains using Python.

What you will learn

Understand blockchain technology and what makes it an immutable database Use the features of web3.py API to interact with the smart contract Create your own cryptocurrency and token in Ethereum using Vyper Use IPFS features to store content on the decentralized storage platform Implement a Twitter-like decentralized application with a desktop frontend Build decentralized applications in the shape of console, web, and desktop applications

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Product Details

Publication date : Feb 14, 2019

Length 450 pages

Edition : 1st Edition

Language : English

ISBN-13 : 9781788627856

Category :

Data

Languages :

Python (Expert)

Concepts :

Blockchain

19 Chapters

Preface

Who this book is for

What this book covers

To get the most out of this book

Get in touch

Section 1: Blockchain and Smart Contracts

Introduction to Blockchain Programming

The rise of cryptocurrency and blockchain

Blockchain technology

Cryptography

The hashing function

Consensus

Coding on the blockchain

Summary

References

Smart Contract Fundamentals

Installing an Ethereum development environment

Writing a smart contract

Deploying a smart contract to Ethereum blockchain

Interacting with smart contracts

Why smart contracts?

Summary

Further reading

Implementing Smart Contracts Using Vyper

Motivations behind Vyper

Installing Vyper

Creating a smart contract with Vyper

Deploying a smart contract to Ganache

Going deeper into Vyper

Interacting with other smart contracts

Compiling code programmatically

Other tricks

Summary

Section 2: Web3 and Populus

Interacting with Smart Contracts Using Web3

Introduction to decentralized applications

Geth

Understanding the web3.py library

Interacting with smart contracts using web3.py

Summary

Populus Development Framework

Setting up Populus

Smart contract unit test

Deploying a smart contract with Populus

Summary

Building a Practical Decentralized Application

Developing a simple voting application

Developing a commercial voting application

Developing a token-based voting application

Summary

Further reading

Section 3: Frontend Decentralized Applications

Frontend Decentralized Application

Setting up the Qt GUI library

Crash course on Qt for Python

Writing the smart contract for the Twitter–like application

Building the GUI frontend for the Twitter–like application

Summary

Section 4: Cryptocurrency and Wallets

Creating Token in Ethereum

ERC20

Cryptocurrency Wallet

Advanced features of the PySide2 library

Building a cryptocurrency wallet

Considerations when building a cryptocurrency wallet

Summary

Section 5: Decentralized Filesystem

InterPlanetary - A Brave New File System

The motivation behind IPFS

Merkle DAG

Peer-to-peer networking

Summary

Using ipfsapi to Interact with IPFS

Installing the IPFS software and its library

Implementing a Decentralized Application Using IPFS

Architecture of the decentralized video-sharing application

Writing the video-sharing smart contract

Building the video-sharing web application

Note

Summary

Further reading

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Authors (1)

Vajrasky Kok

Arjuna Sky Kok has experience more than 10 years in expressing himself as a software engineer. He has developed web applications using Symfony, Laravel, Ruby on Rails, and Django. He also has built mobile applications on top of Android and iOS platforms. Currently, he is researching Ethereum technology. Other than that, he teaches Android and iOS programming to students. He graduated from Bina Nusantara University with majors in Computer Science and Applied Mathematics. He always strives to become a holistic person by enjoying leisure activities, such as dancing Salsa, learning French, and playing StarCraft 2. He lives quietly in the bustling city of Jakarta. In loving memory of my late brother, Hengdra Santoso (1979-2011).

See other products by Vajrasky Kok

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Hands-On Blockchain for Python Developers: Gain blockchain programming skills to build decentralized applications using Python

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