Deploy an ERC-20 Token on the WireFluid Testnet Using Remix IDE

This tutorial shows you how to deploy a custom ERC-20 token on the WireFluid Testnet using Remix IDE and MetaMask, no local development environment or build tools required.

Prerequisites

Before you begin, make sure you have:

• A modern browser (Chrome, Brave, Firefox)
• MetaMask wallet installed
• WireFluid Testnet added to MetaMask
• Some test WIRE in your wallet (from the WireFluid Faucet)

Remix IDE

Remix IDE is a browser-based tool for writing, compiling, deploying, and interacting with Ethereum-compatible smart contracts. It runs entirely in the browser and requires no local setup, making it easy to get started.

Remix is ideal for beginners and quick prototyping because it offers a visual interface and direct integration with wallets like MetaMask. For production and automated workflows, developers typically use frameworks like Hardhat, which provide more control, testing, and deployment automation.

1. Open Remix IDE

1. Navigate to Remix IDE  in your web browser.
2. Remix IDE will open in a new tab, ready for use.

2. Create the ERC-20 Contract

1. In the Remix sidebar, click the file explorer icon

2. Click New File

3. Name it TestToken.sol

4. Paste the following Solidity code:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
 
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
 
contract TestToken is ERC20 {
    constructor(uint256 initialSupply) ERC20("TestToken", "TST") {
        _mint(msg.sender, initialSupply);
    }
}

This contract will:

• Create a token called TestToken
• With symbol TST
• Mint the initial supply to the deployer’s address

3. Compile the Contract

1. Click the Solidity Compiler icon in the Remix sidebar
2. Select a compatible compiler version (e.g., 0.8.20)
3. Click Compile TestToken.sol

If compilation succeeds, you should see a green check mark.

4. Connect MetaMask

Before deploying, you must connect Remix to your MetaMask wallet:

1. In Remix, go to Deploy & Run Transactions (Ethereum icon)

2. Set ENVIRONMENT to Injected Provider - MetaMask

   This makes Remix use your MetaMask wallet and the currently selected network.

3. MetaMask will open and prompt you to connect Click Next → Connect.

⚠️ Make sure MetaMask is set to WireFluid Testnet.

5. Deploy the Contract

Once your wallet is connected and the contract is compiled, you’re ready to deploy the ERC-20 token to the WireFluid Testnet.

1. Open the Deploy & Run Transactions panel in Remix.
2. Ensure the Environment is set to Injected Provider - MetaMask.
3. Select the TestToken contract from the Contract dropdown.
4. In the Constructor Arguments field, enter the initial token supply.

   Note: ERC-20 tokens use 18 decimal places by default.
   To mint 1,000,000 tokens, you need to multiply by 10^18.
   Example: For 1 million tokens, enter: 1000000000000000000000000 (That’s 1,000,000 followed by 18 zeros.)

5. Click Deploy.
6. MetaMask will prompt you to confirm the transaction - review the details and approve it.
7. Wait for the transaction to be confirmed on the WireFluid Testnet.

6. View the Deployed Contract

Once the transaction confirms:

1. You’ll see the deployed contract in Remix under Deployed Contracts

2. Use the Copy icon to copy the contract address

3. You can inspect it on WireScan 

7. Add the Token to MetaMask

To view your newly deployed token:

1. Open MetaMask

2. Go to the Assets tab

3. Click Import Tokens

4. Paste the contract address

5. The token symbol should auto-fill (TST)

6. Click Add

You’ll now see your TST balance in MetaMask.

8. Interact with Your Token

Once deployed:

• Use Remix or MetaMask to transfer tokens
• Explore functions like balanceOf(address) or transfer(address,uint256)
• Use WireScan to view token transfers and holder balances

Summary

You have successfully:

• Written a custom ERC-20 contract
• Compiled it in Remix
• Connected to WireFluid Testnet via MetaMask
• Deployed your token
• Added it to MetaMask
• Viewed it on WireScan

Happy building on WireFluid