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Issue ERC20 Token
ERC-20 is the technical standard for fungible tokens created on the EVM-compatible blockchain. An ERC20 token contract keeps track of fungible tokens: any token is exactly equal to any other token; no tokens have special rights or behavior associated with them. This makes ERC20 tokens useful for things like a medium of exchange currency, voting rights, staking, and more.
As we know, both OpenZeppelin and ConsenSys maintain the standard library of ERC contract classes. Simply put, ERC20 is nothing more than a class with methods and members that run the logic of what we usually call cryptocurrency. However, it has a broader meaning because it also has applications in other use cases.
Having explained why we imported the OpenZeppelin library and what ERC20 means, let's move on to learning how to create and deploy an ERC20 token with the OpenZepplin library.
Note
Additionally, OpenZeppelin offers some ERC20 extension contracts. Please review the details if you are interested.
- Install Metamask
- Configure KuCoin Community Chain Testnet on Metamask
- Get Testnet token
- Create a new
Token.solcontract and copy the below contract code toToken.sol
// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.9;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
contract KIP20Token is ERC20 {
constructor(uint256 totalSupply) ERC20("DemoToken", "DET") {
// create totalSupply of tokens for the deployer
_mint(msg.sender, totalSupply);
}
}
- switch to the compile page
- Select proper compiler
- Select
KIP20Token(Token.sol)contract - And then click
Compile Token.sol
- Click the button to switch to compile button
- Select
Injected Provider-MetaMask - Select
KIP20Token-Token.sol - Fill in many tokens you want to mint and click
Deploybutton
- Click
Confirmbutton to sign and broadcast the transaction to KCC Testnet
- Copy the deployed contract address
- Click
Import Tokens
- Paste the contract address to the
Token contract address - And the
Token symbolandToken decimalwill auto tilled by MetaMask - Finally, Click the
Add custom token
- Click the
Import tokensbutton
- When you reopen the MetaMask next time, you will see the token and amount
This tutorial guides you through the basics of creating and deploying an ERC20 token contract based on the OpenZepplin library using the Remix IDE on the KCC Testnet. It should be noted that the exact same instructions and sequence will also work on KCC Mainnet.
Last modified 4mo ago