Build Multichain Apps with Reown

Fragmented user bases across various networks present a significant hurdle for builders aiming to scale onchain finance. To reach millions of users, applications must move beyond single-chain constraints and offer a seamless experience that feels unified, regardless of the underlying blockchain.

Reown provides the infrastructure to bridge these gaps, turning complex connectivity into usable features that prevent user drop-off.

What does Multichain mean?

Multichain refers to the ability of an application or wallet to operate across multiple distinct blockchain networks simultaneously. As the blockchain landscape is diverse, with multiple active networks and ecosystems, reaching all users while being siloed on a single network is a challenge. That's why multichain apps exist: to reach even more users across multiple networks and platforms, thus removing the challenges of fragmented liquidity and users.

What are multichain apps for?

Multichain support is essential for growth-driven teams because it unlocks access to more wallets and users across the financial internet. But apart from that, there are a few key reasons multichain apps exist:

Reducing fragmentation

Allow users to interact with assets across different ecosystems without switching apps.

Improving UX

Offering a consistent experience whether a user is on Ethereum, Solana, or Bitcoin means that you reduce drop-off and deliver an intuitive UX, similar to that of any web2 app. This is a key improvement all onchain apps aiming to scale to the millions.

Scaling faster

By making your app multichain, you can integrate a single solution that works across the entire blockchain ecosystem instead of rebuilding infrastructure for every new chain you want to support.

What types of apps benefit most from multichain support?

Multichain infrastructure is designed for builders, DeFi platforms, and institutional teams who need to provide flexible access to onchain ecosystems. Of course, you can build any type of multichain app, but some of the most popular types of apps include;

Apps that want to serve multiple chains in the same ecosystem

Platforms operating within the EVM landscape, such as those bridging or providing services across Ethereum mainnet, Base, and Polygon, are one of the key types of apps that benefit from multichain support. With a unified interface, users can manage their assets across these closely related layers without friction.

Apps that want to incorporate multiple chains in different ecosystems

For more complex use cases, apps may need to support entirely different architectures, such as Ethereum, Solana, and Bitcoin. By enabling multichain support, such as via Reown's multichain toolkit, you can offer your users a single flow for authentication, payments and more that still works across these diverse ecosystems.

How does Reown approach multichain support?

Reown serves as the product platform built on top of the WalletConnect protocol to turn cross-chain connectivity into streamlined developer tools. As part of our dedication to providing chain-agnostic infrastructure, we offer a range of multichain tools for providing a seamless user experience.

Let's dive into the multichain features you can expect with Reown:

Supported networks

Reown provides tools for building multichain apps across every major chain, including EVMs, Solana, Bitcoin, Ton and Tron. This broad support ensures that teams can launch and scale flows without starting from scratch for each new network.

Learn more about Reown's supported chains ->

Multichain authentication via SIWX

Through Sign In With X (SIWX), Reown's flagship authentication method, you can allow your users to sign in with a unified flow across all networks supported by Reown. This allows you to accept wallet connections from multiple networks and reach more users. Not only that, but SIWX is Travel Rule compliant, allowing you to set up secure and compliant flows on every chain you support.

Learn more about SIWX multichain auth ->

Chain abstraction

The Reown SDK also facilitates chain abstraction, which simplifies the user experience by masking the underlying technical differences between blockchains. This allows users to pay, swap, or deposit directly in-app with the tokens or coins they already own. No bridging or swapping networks needed: Reown handles the complexity behind the scenes, meaning fewer steps and less friction for your users.

Learn more about Chain Abstraction ->

Multiwallet linking

Reown also supports multiwallet linking. This feature allows a single user to connect multiple wallets from different chains and switch between them with ease, ensuring they have cross-ecosystem freedom without moving assets or switching applications. This massively reduces user drop-off, and eliminates the need to lead users away from your platform to take the actions they want.

Learn more about Multiwallet Linking ->

How to Build Multichain apps with Reown

Want to get started with building multichain apps? With Reown, it's easy!

1. Set up the Reown SDK with support for your chosen chains. View the supported chains here.
2. Get started with SIWX authentication to accept the most popular wallest on your chosen chains. SIWX is enabled by default when you set up the Reown SDK, so you don't need to do anything to get started!
3. Enable chain abstraction, to simplify your transaction UX and remove friction.
4. Get started with Multiwallet linking to take your user experience to the next level and deliver a truly seamless multichain app.

Choose Reown to enable seamless and reliable multichain

Reown provides the infrastructure needed to launch and scale secure, insight-rich multichain apps. By leveraging a network of 500+ wallets and built-in analytics, teams can reach more users and optimize conversion through a reliable, consistent cross-chain UX.

Ready to build? Get started with the Reown SDK today.