6 min read
Overview
Mantle is a Layer 2 (L2) blockchain built on top of Ethereum, designed to offer significantly lower gas fees and faster transaction speeds compared to the Ethereum mainnet. It enables existing Ethereum contracts and tools to operate on Mantle with minimal adjustments.
In this guide, we'll teach you more about Mantle and then show you how to create and deploy your own memecoin (ERC-20 token) on the Mantle Sepolia testnet. Let's get started.
Prefer a video walkthrough? Follow along with Sahil and learn how to create a Memecoin on Mantle and add liquidity on FusionX in under 13 minutes.
What You Will Do
- Learn about Mantle
- Create a Mantle Sepolia node endpoint with QuickNode
- Add Mantle RPC URL to MetaMask
- Bridge testnet MNT from Sepolia to Mantle
- Create a memecoin (ERC-20 token) on Remix.IDE
- Add liquidity to memecoin on FusionX
What You Will Need
- Basic understanding of Ethereum and smart contracts
- A MetaMask wallet or WalletConnect compatible wallet
- An account on X (in order to use the Mantle faucet)
- A web browser (e.g., Chrome)
What is Mantle?
Mantle Network is built as a Rollup, utilizing Ethereum's validators and consensus protocols to significantly cut gas fees, reduce latency, and boost throughput. Unlike traditional monolithic chains (e.g., Ethereum L1) that handle transaction execution, consensus, settlement, and storage in one layer, Mantle adopts a modular architecture, separating these functions into individual components. This includes an EVM-compatible execution layer for transactions, with consensus and settlement processed on Ethereum, and an external data availability (DA) module.
Create a Mantle Node Endpoint with QuickNode
To deploy an ERC-20 token on the Mantle Sepolia testnet, we will need a node to communicate with. You're welcome to use public nodes or deploy and manage your own infrastructure; however, if you'd like 8x faster response times, you can leave the heavy lifting to us. Sign up for a free account here.
Once logged in, go to the Endpoints page and then click the Create Endpoint button. Then, select the Mantle chain and Sepolia network.
After creating your endpoint, copy the HTTP Provider URL and keep it handy, as you'll need it in the next section.
Add Mantle Node Endpoint to MetaMask
Next, let's add our previously created Mantle endpoint to MetaMask. Adding our private endpoint to MetaMask will enable more reliable and faster service when submitting transactions compared to using a public endpoint.
Open your MetaMask wallet, click the Network icon in the upper-left corner, and then click Add Network. Then, fill in the network details:
- Network name: Mantle Sepolia
- New RPC URL:
{QUICKNODE HTTP URL}
- Chain ID: 5003
- Currency symbol: MNT
- Block explorer URL: https://sepolia.mantlescan.xyz/
In the next section, we'll get some testnet ETH on Sepolia then mint MNT tokens and bridge them to Mantle Sepolia testnet.
Fund Your Ethereum Sepolia Wallet
At the time of this writing, there isn't a native faucet on Mantle Sepolia to retrieve MNT (Mantle Token; the native token to pay for gas fees), therefore, we'll be minting MNT on Ethereum Sepolia, then bridging to Mantle Sepolia. In order to do this, we'll need to make sure we have enough ETH on Ethereum Sepolia to pay for gas fees.
Navigate to the QuickNode Multi-Chain Faucet and paste or connect your wallet address. Then, proceed with requesting testnet ETH.
Note: A wallet must hold at least 0.001 ETH on Ethereum Mainnet to use the EVM faucets.
Mint MNT on Ethereum Sepolia
With our Ethereum Sepolia wallet funded, let's mint MNT tokens.
Navigate to the Mantle Faucet, connect your X account, and then request at least 20 MNT tokens.
Bridge to Mantle
To bridge our MNT from Ethereum Sepolia to Mantle Sepolia, we'll use the Mantle Bridge.
We recommend bridging at least 20 MNT to ensure you have enough to pay for contract deployment and then adding liquidity on FusionX.