While both Arbitrum and Base are OP-based L2 rollups, each has a unique ecosystem. Bridging tokens across these ecosystems helps break blockchain barriers and expose a token or dApp to a new crowd. In this tutorial, we’ll show you how to bridge tokens from Arbitrum to Base via ChainPort.
How to Bridge Tokens from Arbitrum to Base
Step 1 - Connect Your Wallet
Go to ChainPort's bridge (https://app.chainport.io/) and connect your wallet. ChainPort supports Ledger, Trezor, Coinbase Wallet, Wallet Connect, and Metamask wallets. Select the wallet with the Arbitrum-based tokens you wish to bridge to Base.
Step 2 - Select the Chains & Token
In the drop-down menu, select the source blockchain and token. In our case, the source chain is Arbitrum. Select Base as the target chain.
Step 3 - Confirm Tx & Get Tokens
Review all related information, including gas fees and the token, before confirming the transaction. Once you have confirmed all details, approve the transaction and wait a few minutes for it to be processed. Afterward, your tokens have been successfully bridged from Arbitrum to Base.
Why Bridge Tokens?
Bridging tokens allows users and projects to move assets across different blockchain networks, unlocking liquidity, reducing fees, and accessing unique ecosystem opportunities. It enables DeFi users to take advantage of protocols and dApps on other chains without needing to sell or swap assets. For developers, bridging expands the reach of tokens, increases utility, and enhances user adoption across multiple ecosystems.
With cross-chain interoperability, projects can tap into larger communities, scale faster, and build more flexible, composable applications that aren’t limited by a single network’s constraints. Bridging is essential for a connected, efficient, and truly decentralized Web3 experience.
What are ChainPort’s Bridging Fees?
ChainPort charges a flat 0.3% fee on each bridging transaction, probably the lowest fee among cross-chain bridges. This fee helps sustain the protocol, fund security audits, and support ongoing development. There are no hidden fees, and users retain full custody of their tokens throughout the bridging process.
What is Arbitrum?
Arbitrum is a Layer 2 scaling solution for Ethereum that uses Optimistic Rollup technology to significantly reduce transaction fees and increase throughput. It allows users to interact with Ethereum-based applications faster and at a lower cost, without sacrificing security, as it inherits Ethereum’s base-layer security. Arbitrum is fully compatible with existing Ethereum smart contracts, making it easy for developers to migrate or deploy dApps
What is Base?
Base is a Layer 2 blockchain built on Ethereum and developed by Coinbase. It leverages Optimism’s OP Stack to offer a secure, low-cost, and developer-friendly environment for building decentralized applications.
Designed to bring the next billion users on-chain, Base aims to serve as a bridge between Coinbase’s massive user base and the broader Web3 ecosystem. It supports full EVM compatibility, making it easy for developers to deploy existing Ethereum contracts and tools. With low fees and high throughput, Base enables scalable DeFi, gaming, NFTs, and social applications. It also benefits from Coinbase’s strong security practices and infrastructure, offering a reliable gateway for both users and developers
Final Thoughts
ChainPort makes bridging tokens from Arbitrum to Base secure, affordable, and easy by leveraging audited smart contracts, low fees, and a user-friendly interface. It's fast, security-focused architecture ensures assets are always protected while enabling quick cross-chain transfers between two leading Layer 2 networks.
