As new L1s, L2s, altVMs begin to flourish, more crypto users are beginning to explore cross-chain opportunities, and multichain support is becoming a large priority for most teams.
At Turnkey, we take a different approach than most to multichain support. Instead of adding individual chains on a case-by-case basis, our wallet infrastructure is built on cryptographic curves, so that new chains can be supported before they even launch. Here’s how that works.
Turnkey's curve-based architecture
While other wallet infrastructure solutions focus on setting up support for each network individually, Turnkey’s approach focuses on supporting the underlying cryptographic curves.
Blockchain networks rely on a small handful of cryptographic curves to generate keypairs and to sign transactions.
Specific points are chosen on the curve (a generator point), which is then multiplied by a very large random number (i.e. a private key) in order to generate a public key. Different chains specify the generator point on a curve, so that addresses on a network can follow a standard.
The most common of these curves are:
- Secp256k1 - used by Bitcoin, Ethereum/EVM chains, Cosmos, Sei, and more
- Ed25519 - used by Solana, Aptos, Sui, TON, and more
Both of these curve types mentioned are supported by Turnkey, and by extension, all of the networks mentioned are also supported. With these two curves we cover the vast majority of crypto assets, and can add new curves to support the rest.
Focusing on fundamental cryptographic curves comes with a lot of technical advantages. Using a smaller set of cryptographic libraries is better for security, and can also reduce latency in most cases. It also means that cross-chain infrastructure becomes much simpler to support.
At Turnkey, we enable signing for any blockchain that uses the secp256k1 and ed25519 curves. Instead of adding custom logic for every single chain as they’re released, any new blockchains built on these curves will receive out-of-the-box support from Turnkey on day one.
That being said, we take a tiered approach to chain support. This starts with curve-level signing support, and also includes address derivations, SDK construction and signing, and transaction parsing and Policy creation:
Turnkey’s curve-based approach means the majority of chains are automatically supported, and we can instead hone in on more granular support and solutions for developers.
Let's take a look at some of the applications making use of Turnkey across different chains today.
Real-World Applications
Ethereum and EVM applications
Kinto is an Ethereum L2 with built-in security features, using Turnkey to generate new non-custodial wallets with fully automated recovery flows.
By using Turnkey, Kinto didn’t have to wait for support for their own chain before integrating - instead, they could just focus on building a better user experience.
By leveraging Turnkey’s solutions, Kinto onboarded ~25K users in their initial launch program, reaching over ~200k users today, and has crossed over to $300M+ in monthly trading volume.
Solana applications
One of the biggest applications built on Solana and powered by Turnkey is Moonshot.
Moonshot lets users buy and sell crypto with just a few taps from their mobile device. By leveraging Turnkey for secure transaction signing, passkey authentication, and user wallet creation, Moonshot users are able to experience the advantages of non-custodial trading with the convenience of a traditional finance app.
Turnkey supports Solana out of the box, including SDK and comprehensive Policy Engine support.
Multichain applications
Turnkey’s curve-based support means developers can utilize all supported curves to build applications, which often require generating addresses and signing transactions across different chains.
Azura is a next-generation trading terminal with a focus on advanced strategies, utilizing decentralized exchanges and swapping services for traders. It’s a web-based trading terminal that brings the UX and seamlessness from centralized exchanges to the DeFi scene.
Turnkey provides the infrastructure that handles wallet generation and signing across all EVM chains, Solana and more. This means that Azura can add new chains to its platform easily and without the need for specific chain support, thanks to our curve-based approach.
Using Turnkey for emerging ecosystems
Some of the newer blockchains that Turnkey has recently added more granular support for include Sei and Sui. We also provide out-of-the-box support for EVM chains like Berachain and Monad. Since these chains utilize established cryptographic curves, Turnkey was able to support them from day one.
In fact, you can use Turnkey to sign transactions for any new networks which make use of either secp256k1 or ed25519.
Beyond transaction signing, you can also create addresses for as many different compatible chains as you’d like, set these up as non-custodial or custodial wallets, provide seamless onboarding and UX with passkeys, and more.
Check out our docs to get started, and follow us on X to stay up-to-date.
Happy building!
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