Book Image

Building Blockchain Projects

By : Narayan Prusty
Book Image

Building Blockchain Projects

By: Narayan Prusty

Overview of this book

Blockchain is a decentralized ledger that maintains a continuously growing list of data records that are 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, making it permission-less. 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 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-e applications for blockchain. You will learn about concepts such as cryptography in cryptocurrencies, ether security, mining, smart contracts, solidity, and more. You will also learn about web sockets, various API services for Ethereum, and much more. The blockchain is the main technical innovation of bitcoin, where it serves as the public ledger for bitcoin transactions.
Table of Contents (16 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Nonce


The nonce is a 64-bit unsigned integer. The nonce is the solution to the puzzle. A miner keeps incrementing the nonce until it finds the solution. Now you must be wondering if there is a miner who has hash power more than any other miner in the network, would the miner always find nonce first? Well, it wouldn't.

The hash of the block that the miners are mining is different for every miner because the hash depends on things such as the timestamp, miner address, and so on, and it's unlikely that it will be the same for all miners. Therefore, it's not a race to solve the puzzle; rather, it's a lottery system. But of course, a miner is likely to get lucky depending on its hash power, but that doesn't mean the miner will always find the next block.