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
About the Author
About the Reviewers
Customer Feedback

Introducing solcjs

solcjs is a Node.js library and command-line tool that is used to compile solidity files. It doesn't use the solc command-line compiler; instead, it compiles purely using JavaScript, so it's much easier to install than solc.

Solc is the actual Solidity compiler. Solc is written in C++. The C++ code is compiled to JavaScript using emscripten. Every version of solc is compiled to JavaScript. At, you can find the JavaScript-based compilers of each solidity version. solcjs just uses one of these JavaScript-based compilers to compile the solidity source code. These JavaScript-based compilers can run in both browser and Node.js environments.


The browser Solidity uses these JavaScript-based compilers to compile the Solidity source code.

Installing solcjs

solcjs is available as an npm package with the name solc. You can install the solcjs npm package locally or globally just like any other npm package. If this package is installed...