How to Develop and Deploy a Smart Contract on the Fantom Blockchain

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The rise of multi-chain ecosystems has brought innovative Layer-1 solutions like Fantom into the spotlight. With high throughput, low transaction fees, and instant finality, Fantom offers developers a scalable and cost-efficient alternative to traditional blockchains. As an EVM-compatible network, Fantom allows seamless migration of existing Ethereum-based dApps and development tools, making it an attractive choice for Web3 builders.

One of the most powerful ways to enhance smart contracts on Fantom is by integrating real-world data through Chainlink’s decentralized oracle network. In this guide, we’ll walk you through how to build and deploy a smart contract on Fantom that fetches price data using Chainlink Price Feeds—a critical component for DeFi, insurance, and automated market-making applications.

What Is Fantom?

Fantom is a high-performance blockchain designed for fast, secure, and scalable decentralized applications. Built with asynchronous Byzantine Fault Tolerance (aBFT) consensus, it achieves near-instant transaction finality and extremely low gas costs. Its Ethereum Virtual Machine (EVM) compatibility means developers can use familiar tools like Solidity, MetaMask, and Remix without needing to learn new frameworks.

This compatibility opens the door for Ethereum-native projects to expand their reach while benefiting from improved speed and reduced costs—making Fantom a compelling platform for next-generation dApp development.

👉 Discover how blockchain developers are leveraging EVM-compatible chains for scalable dApp deployment.

Setting Up Your Development Environment

To begin building on Fantom, you don’t need complex tooling. You can use any standard Solidity development framework, such as:

For this tutorial, we’ll use Remix IDE, a user-friendly, web-based environment ideal for beginners and rapid prototyping.

Step 1: Install and Configure MetaMask

Before deploying, ensure your MetaMask wallet is set up to interact with the Fantom network. Add the Fantom testnet as a custom RPC:

Once added, switch your wallet network to Fantom Testnet.

Step 2: Get Testnet FTM Tokens

You’ll need testnet FTM to cover deployment gas fees. Visit the official Fantom faucet at faucet.fantom.network to claim free test tokens. Simply connect your wallet and request funds—no additional steps required.

Building a Smart Contract with Chainlink Price Feeds

Now that your environment is ready, let’s create a contract that retrieves real-time asset prices using Chainlink’s decentralized data feeds.

Chainlink provides pre-built Price Feeds on Fantom, delivering accurate, tamper-proof market data. We’ll use the FTM/USD Price Feed in this example.

Required Components

First, import the AggregatorV3Interface from Chainlink’s contract library. This interface allows your contract to read price data securely.

// SPDX-License-Identifier: MIT
pragma solidity 0.8.19;

import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";

contract FantomPriceConsumer {
    AggregatorV3Interface internal priceFeed;

    /**
     * Network: Fantom Testnet
     * Aggregator: FTM/USD
     * Address: 0xe04676B9A9A2973BCb0D1478b5E1E9098BBB7f3D
     */
    constructor() {
        priceFeed = AggregatorV3Interface(0xe04676B9A9A2973BCb0D1478b5E1E9098BBB7f3D);
    }

    /**
     * Returns the latest FTM/USD price
     */
    function getLatestPrice() public view returns (int) {
        (
            uint80 roundID,
            int price,
            uint startedAt,
            uint timeStamp,
            uint80 answeredInRound
        ) = priceFeed.latestRoundData();
        return price;
    }
}

Key Features of the Contract

Because this function only reads data, calling it costs zero gas, making it efficient for front-end dApp integration.

👉 Learn how real-time price data powers next-gen DeFi applications across EVM chains.

Deploying Your Contract on Fantom

Step 1: Compile in Remix

  1. Open Remix IDE.
  2. Create a new file named FantomPriceConsumer.sol.
  3. Paste the code above.
  4. Navigate to the Compile tab and click “Compile.”

Ensure there are no errors before proceeding.

Step 2: Deploy via Injected Web3

  1. Go to the Deploy & Run Transactions tab.
  2. Select Injected Provider - MetaMask as the environment.
  3. Make sure MetaMask is connected to the Fantom Testnet.
  4. Select your contract (FantomPriceConsumer) from the dropdown.
  5. Click Deploy.

Confirm the transaction in MetaMask. Once confirmed (usually within seconds), your contract will appear under “Deployed Contracts.”

Step 3: Interact with Your Contract

After deployment:

  1. Expand the deployed contract in Remix.
  2. Click getLatestPrice to retrieve the current FTM/USD price.
  3. The result will be returned in integer format with 8 decimals of precision.

You now have a fully functional smart contract pulling real-world data on the Fantom blockchain.

Why Use Chainlink on Fantom?

Integrating Chainlink Price Feeds unlocks powerful use cases:

Chainlink ensures data is aggregated from multiple high-quality sources, resistant to manipulation, and updated regularly—critical for trustless on-chain execution.

Frequently Asked Questions (FAQ)

Q: Is Fantom fully compatible with Ethereum tools?

Yes. Fantom supports all EVM-based development tools, including MetaMask, Hardhat, Truffle, and Remix. You can deploy Solidity contracts with minimal changes.

Q: Do I need real FTM to deploy on Fantom?

No—for testing, use testnet FTM from the Fantom faucet. Mainnet deployments require real FTM tokens.

Q: Are Chainlink Price Feeds free to use?

Reading price data from Chainlink is free for consumers. However, node operators are compensated off-chain, ensuring reliable service without burdening end users.

Q: Where can I find other Chainlink Price Feed addresses?

Visit the official Chainlink documentation for a full list of supported assets and their contract addresses on Fantom.

Q: Can I use this setup on other EVM chains?

Absolutely. This pattern works across all EVM-compatible networks like Polygon, Avalanche, and Binance Smart Chain—just update the Price Feed address accordingly.

Q: What security considerations should I keep in mind?

Always verify the correctness of oracle addresses and implement fallback mechanisms where possible. Prefer well-established feeds with high uptime and community trust.

Final Thoughts

Building on Fantom offers developers a high-speed, low-cost environment without sacrificing tooling familiarity or ecosystem support. When combined with Chainlink’s industry-standard oracles, you gain access to secure, decentralized data—essential for robust dApp functionality.

Whether you're creating DeFi protocols, NFT marketplaces, or automated trading systems, mastering smart contract deployment on EVM-compatible chains like Fantom positions you at the forefront of Web3 innovation.

As blockchain ecosystems continue to evolve, leveraging interoperable infrastructure and reliable data sources will be key to building scalable and trustworthy applications.

👉 Explore how leading developers are using oracle-powered contracts across EVM chains today.