Ethereum Request for Comment (ERC) has a standard process to initiate improvement proposals and make them standard. ERC20 is a token standard that's used to create the fungible tokens on Ethereum blockchain—just like bitcoin (symbol: BTC) and ether (symbol: ETH) are coins and have economic values. Similarly, by using the ERC20 standard, you can mint as many tokens of a specific type, which also have economic values. This standard allows anyone to easily create their own token on a blockchain.
In this chapter, we are going to look into the ERC20 token standard of the Ethereum blockchain. There are many standards present in Ethereum; however, the most used and popular one is the ERC20 standard. We will understand the API methods of the standard, and we will look into the implementation of these API methods. We will understand when to use ERC20...