Preface

Blockchain is a decentralized ledger that maintains a continuously growing list of data records secured from tampering and revision. Every user is allowed to connect to the network, send new transactions to it, verify transactions, and create new blocks.

This book will teach you what Blockchain is, how it maintains data integrity, and how to create real-world Blockchain projects using Ethereum. With interesting real-world projects, you will know learn how to write smart contracts which run exactly as programmed without any chance of fraud, censorship or third-party interference, and build end-to-end applications for Blockchain. You will learn concepts such as cryptography in cryptocurrencies, ether security, mining, smart contracts, and solidity.

The blockchain is the main technical innovation of bitcoin, where it serves as the public ledger for bitcoin transactions.