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You're reading from Mastering Blockchain Programming with Solidity Write production-ready smart contracts for Ethereum blockchain with Solidity

Product type Paperback

Published in Aug 2019

Publisher Packt

ISBN-13 9781839218262

Length 486 pages

Edition 1st Edition

Languages

Solidity

Tools

Blockchain

Concepts

Blockchain

Author (1):

Jitendra Chittoda

View More author details

Table of Contents (21) Chapters

Preface

1. Section 1: Getting Started with Blockchain, Ethereum, and Solidity FREE CHAPTER

2. Introduction to Blockchain

3. Getting Started with Solidity

4. Control Structures and Contracts

5. Section 2: Deep Dive into Development Tools

6. Learning MetaMask and Remix

7. Using Ganache and the Truffle Framework

8. Taking Advantage of Code Quality Tools

9. Section 3: Mastering ERC Standards and Libraries

10. ERC20 Token Standard

11. ERC721 Non-Fungible Token Standard

12. Deep Dive into the OpenZeppelin Library

13. Using Multisig Wallets

14. Upgradable Contracts Using ZeppelinOS

15. Building Your Own Token

16. Section 4: Design Patterns and Best Practices

17. Solidity Design Patterns

18. Tips, Tricks, and Security Best Practices

19. Assessments

20. Other Books You May Enjoy

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Setting up your own multisig wallet

You can find the submodule for the multisig wallet contract code in this book's GitHub repository, in the Chapter10/MultiSigWallet directory. We are using the fork from the Gnosis multisig wallet repository. This repository may be updated with fixes and upgrades in the future.

In the MultiSigWallet project, Gnosis has built a DApp for the multisig contract that was built by ConsenSys. The smart contract was written by ConsenSys, and Gnosis built a good looking DApp for it. By using the DApp client, the wallet becomes very user-friendly, and anyone can create and use them. The only requirement for the multisig wallet DApp is that it needs MetaMask or a supported hardware wallet so that you can connect your account to it.

As we saw in the previous example, there were four signatories/owners of the multisig wallet...

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Authors (1)

Chittoda

Jitendra Chittoda is a blockchain security engineer at ChainSecurity. His day job is to perform security audit on smart contracts and expose security vulnerabilities in Solidity and Scilla contracts. He has also developed a non-custodial, decentralized, P2P lending contracts for ETHLend. The Solidity contracts that he has developed or audited handle over $100 million worth of cryptoassets. He also served as a tech and security advisor in various ICO projects. Before finding his passion for blockchain, he coded in Java for over 11 years. He is the founder and leader of Delhi-NCR-JUG, a non-profit meetup group for Java. He holds a master's degree in computer applications and is regularly invited as a speaker at various conferences and meetups.

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