🔹Deploy Smart Contracts on Orbion

Orbion is fully EVM-compatible, allowing developers to deploy smart contracts using familiar tools such as Hardhat, Remix, and Foundry without modification.

The testnet mimics mainnet conditions, with stable RPC endpoints, dynamic fee markets, and full support for contract verification. This guide provides step-by-step instructions for deploying contracts using Hardhat.

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✅ Requirements

Before deploying, ensure you have the following:

• Node.js & npm installed

• MetaMask or a funded private key with Testnet ORB

• Hardhat installed in your project

• RPC endpoint from Orbion Testnet

• Chain ID: 109901

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🔧 1. Initialize Hardhat Project

If you haven’t already:

mkdir orbion-contract && cd orbion-contract
npm init -y
npm install --save-dev hardhat
npx hardhat

Choose “Create a basic sample project” and follow the prompts.

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📝 2. Configure hardhat.config.js

Update the file to include Orbion Testnet:

require("@nomiclabs/hardhat-ethers");

module.exports = {
  networks: {
    orbion: {
      url: "https://rpctestnet-1.orbionchain.com",
      accounts: [process.env.PRIVATE_KEY],
      chainId: 109901,
    },
  },
  solidity: "0.8.20",
};

⚠️ Store your private key safely using .env:

PRIVATE_KEY=your_wallet_private_key

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📜 3. Compile Contract

Make sure your smart contract (e.g., contracts/Greeter.sol) is ready. Then compile:

npx hardhat compile

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🚀 4. Deploy to Orbion

Create a new file scripts/deploy.js:

async function main() {
  const Greeter = await ethers.getContractFactory("Greeter");
  const greeter = await Greeter.deploy("Hello from Orbion!");
  await greeter.deployed();
  console.log("Greeter deployed to:", greeter.address);
}
main()
  .then(() => process.exit(0))
  .catch((error) => {
    console.error(error);
    process.exit(1);
  });

Run the deployment script:

npx hardhat run scripts/deploy.js --network orbion

You should see the deployed contract address in your terminal.

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🧠 5. Verify on Explorer (Optional)

Once deployed, you can verify your smart contract on the Orbion Explorer (supports ABI, source code, and constructor args).

Steps:

1. Navigate to https://scantestnet.orbionchain.com

2. Paste your contract address

3. Select “Verify Contract”

4. Upload your source files or input constructor args manually

Verification ensures public transparency and allows anyone to interact via the web UI.

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🧪 Tips for Testing on Orbion

• Use the Faucet to fund your deployer wallet

• Test estimateGas behavior under load — Orbion uses dynamic fees

• Retry failed txs with higher maxPriorityFeePerGas

• Use npx hardhat verify if auto-verification is supported (coming soon)

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💡 Advanced: Foundry & Remix

Orbion also supports:

• Foundry (via forge deploy & custom RPC)

• Remix IDE (add network manually using Chain ID 9119)

• Custom private RPCs or local node deployment for power users

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Need to test staking, token logic, or upgradeable proxies? Orbion Testnet supports full simulation of validator interactions, gas accounting, and governance triggers — just like mainnet.