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ERC20 Example

ERC20 is a standard for fungible tokens and is defined in the EIP-20 Token Standard by Ethereum.

With the ERC20 standard you can create your own tokens and transfer them in the EVM on IOTA Smart Contracts without fees.

You can use the Remix IDE to deploy any regular Solidity Smart Contract.

Set the environment to Injected Web3, and connect Remix with your MetaMask wallet. Read this how to connect your MetaMask with the public Testnet..

1. Create a Smart Contract​

Create a new Solidity file, for example ERC20.sol in the contracts folder of your Remix IDE and add this code snippet:

pragma solidity ^0.8.7;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

contract ExampleERC20Token is ERC20 {
    constructor() ERC20("ExampleERC20Token", "EET") {
        _mint(msg.sender, 1000000 * 10 ** decimals());
    }
}

This imports all functions from the OpenZeppelin smart contract and creates a new ERC20 token with your name and Symbol. OpenZeppelin provides many audited smart contracts and is a good point to start and learn.

You can change the token name ExampleERC20Token and the token symbol EET.

2. Compile​

Go to the second tab and compile your smart contract with the "Compile ERC20.sol" button.

Compile ERC20.sol

3. Deploy​

Go to the next tab and select Injected Web3 as your environment. Ensure that your MetaMask is installed and setup correctly.

Choose your ´ExampleERC20Token´ smart contract in the contract dropdown.

Press the "Deploy" button - then your MetaMask will popup and you need to accept the deployment.

Deploy ERC20.sol

Your MetaMask browser extension will open automatically - press confirm. Confirm in MetaMask

4. Add Your Token to MetaMask​

Get the contract address from the transaction after successful deployment. You can click on the latest transaction in your MetaMask Activity tab. If your MetaMask is configured correctly, the IOTA EVM Explorer opens the transaction. Copy the contract address and import your token into MetaMask.

Copy contract address

5. Have some Fun!​

Now you should see your token in MetaMask - send them to your friends without any fees or gas costs.

Copy contract address

You also can ask in the Discord Chat Server to send them around and discover what the community is building on IOTA Smart Contracts.