Start Building

Step 1: Open Remix IDE

Visit https://remix.ethereum.org
On the left sidebar, click Deploy & Run Transactions
Click Customize this list
Select Injected Provider – StarKey Wallet
Ensure your wallet is connected to Supra MultiVM
A confirmation modal will appear in StarKey Wallet.

Step 2: Create a New Solidity File

Click the File Explorer icon
Click New File
Name it:

SimpleSupraStorage.sol

Paste the following contract:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract SimpleSupraStorage {
    uint256 public storedData;

    function set(uint256 x) public {
        storedData = x;
    }

    function get() public view returns (uint256) {
        return storedData;
    }
}

What this contract does:

• storedData: stores one number
• set(x): updates the stored number
• get(): returns the stored number

Perfect for learning SupraEVM deployment flow.

Step 3: Compile the Contract

Click the Solidity Compiler tab
Choose compiler version: 0.8.x
Click Compile SimpleSupraStorage.sol
A green checkmark means success.

Step 4: Deploy to SupraEVM MultiVM

Open Deploy & Run Transactions
Under Environment, choose:

Injected Web3 (StarKey Wallet)

• Make sure StarKey Wallet is switched to:
  ✔ Supra MultiVM Testnet
  ✘ Not Ethereum, BNB, or any other network

Click Deploy
Confirm the transaction in StarKey Wallet

Your contract is now deployed on SupraEVM.

Step 6: Verify Transactions on the Explorer

Every action (deploy, set, get) is recorded on Supra’s MultiVM Explorer.
Paste your transaction hash or contract address into:

Supra MultiVM Block Explorer

You can view:

• Gas used
• Function calls
• Storage changes
• Contract creator
• Execution results