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Deploy Contract Using Remix

1. Introduction​

Tutorial Objective​

This tutorial will guide you through deploying an ERC20 smart contract on the Global Trust Network (GTN) using the Remix IDE, an online smart contract development environment that requires no installation.

Prerequisites​

  • Basic knowledge of programming and blockchain.
  • MetaMask installed and configured.

2. Sign Up for an API Key​

Before starting, ensure you have an API key. Refer to the getting starteddocumentation to sign up for an API key and add the Global Trust Network (GTN) to MetaMask.

3. Setting Up Remix​

Navigate to Remix IDE

Screenshot of Remix

In Remix, create a new file by clicking the icon highlighted in the screenshot. Name your file MyERC20.sol and prepare to deploy an ERC20 token named PossumToken with the ticker symbol POSSUM.

Paste the following code into your file:

// SPDX-License-Identifier: MIT
// Compatible with OpenZeppelin Contracts ^5.0.0
pragma solidity ^0.8.20;

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

contract PossumToken is ERC20 {
    constructor() ERC20("PossumToken", "POSSUM") {
        _mint(msg.sender, 10000 * 10 ** decimals());
    }
}

4. Compile the Contract​

To compile your contract, select the Solidity Compiler from the left sidebar in Remix.

Compile remix

Click on the Compile MyERC20.sol button. Your contract should now be compiled successfully.

5. Deploy​

To deploy the contract, go to the Deploy & Run Transactions section in the left sidebar.

Deploy with Remix

Set the ENVIRONMENT to Injected Provider - MetaMask.

Under the Contract dropdown, select MyERC20, and then click the orange deploy button. A MetaMask popup will appear. Click the pencil icon in the estimated fee box.

Adjust Gas Icon in Metamask

This will allow you to customize Metamask for zero gas transactions. Click the advanced gas fee icon. Set your Max Base Fee and Priority Fee to zero. Click the Save these values as my default... checkbox to avoid having to manually set the gas in the future.

Advanced Gas Fee Settings in Metamask

Once deployed, you will see a confirmation like this:

Contract deployed image

Congratulations! Your smart contract is now deployed.

To view your token, visit the Global Trust Network's block explorer, then copy and paste your contract's address.