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Hands-On Blockchain for Python Developers

You're reading from   Hands-On Blockchain for Python Developers Gain blockchain programming skills to build decentralized applications using Python

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Product type Paperback
Published in Feb 2019
Publisher Packt
ISBN-13 9781788627856
Length 450 pages
Edition 1st Edition
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Author (1):
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Arjuna Sky Kok Arjuna Sky Kok
Author Profile Icon Arjuna Sky Kok
Arjuna Sky Kok
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Toc

Table of Contents (19) Chapters Close

Preface 1. Section 1: Blockchain and Smart Contracts
2. Introduction to Blockchain Programming FREE CHAPTER 3. Smart Contract Fundamentals 4. Implementing Smart Contracts Using Vyper 5. Section 2: Web3 and Populus
6. Interacting with Smart Contracts Using Web3 7. Populus Development Framework 8. Building a Practical Decentralized Application 9. Section 3: Frontend Decentralized Applications
10. Frontend Decentralized Application 11. Section 4: Cryptocurrency and Wallets
12. Creating Token in Ethereum 13. Cryptocurrency Wallet 14. Section 5: Decentralized Filesystem
15. InterPlanetary - A Brave New File System 16. Using ipfsapi to Interact with IPFS 17. Implementing a Decentralized Application Using IPFS 18. Other Books You May Enjoy

ERC20

More than likely, you will have heard of ERC20. When a new cryptocurrency is out, the first question that usually arises is—is it an ERC20 token? People assume incorrectly regarding the ERC20 token; they think it is a cryptocurrency based on Ethereum. Well, technically speaking, this is true, but it does not tell the whole story. ERC20 is a standard in Ethereum for creating a token. The simple token that we have just created does not fulfill the ERC20 standard. Yes, it is a digital token smart contract, but it is not an ERC20 token. ERC20 is one of many reasons why we have seen an increase in the number of new cryptocurrencies in 2017. However, ERC20 is not a requirement for creating a token on top of Ethereum.

To create an ERC20 token, you must implement the following methods:

function totalSupply() public view returns (uint256)
function balanceOf(address _owner...
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