OKX, a prominent cryptocurrency exchange and Web3 ecosystem provider, has announced the launch of a new Ethereum-based Zero Knowledge (ZK) Layer 2 network. This infrastructure is built using the Polygon Chain Development Kit (CDK), a framework designed to support scalable and secure blockchain development. As part of the initiative, OKX will also take on the role of a core contributor to the ongoing evolution of Polygon CDK.
Named X Layer, this new network is positioned to become the native blockchain environment for OKX, linking its over 50 million users to both the Ethereum and Polygon ecosystems. The platform will utilize OKB, OKX’s native utility token, for gas fee payments. A testnet version of X Layer is already available for public testing.
X Layer is designed to be a user-friendly, high-performance protocol that leverages ZK-proof technology to enhance security, scalability, and cost efficiency. Its compatibility with the Ethereum Virtual Machine (EVM) allows developers to seamlessly deploy decentralized applications (dApps) and integrate with a wide array of existing smart contracts, tools, and wallets.
Through this collaboration, OKX is committing substantial engineering resources to help advance Ethereum scaling solutions. The partnership aims to foster greater interoperability, developer engagement, and mainstream adoption of Web3 technologies.
What Is X Layer?
X Layer is a ZK-powered Layer 2 network built on Ethereum. It uses advanced cryptography to bundle off-chain transactions into single, verifiable proofs—reducing congestion on the main Ethereum chain while improving throughput and lowering fees.
The network is designed with a focus on user experience, making it easier for both developers and end-users to interact with decentralized applications without compromising on security or performance.
Core Features of X Layer
- EVM-Equivalence: Full compatibility with Ethereum allows developers to port existing dApps with minimal changes.
- ZK-Rollup Technology: Enhances privacy and scalability while reducing transaction costs.
- Interoperability: Designed to connect with other Polygon CDK-based chains and Ethereum Layer 2 ecosystems.
- OKB Integration: OKB serves as the native token for transaction fees, creating added utility and demand.
The Role of Polygon CDK
Polygon Chain Development Kit is an open-source toolkit that allows projects to launch their own ZK Layer 2 chains on Ethereum. It provides modular components that simplify development, deployment, and maintenance while ensuring interoperability within a growing network of ZK-based chains.
Several other major projects are already building with Polygon CDK, including Canto, Astar, and Gnosis Pay. This collective effort is helping create a unified liquidity and connectivity layer across the Web3 space.
Driving Mass Adoption of Web3
Jason Lau, Chief Innovation Officer at OKX, emphasized the role of X Layer in onboarding users into the Web3 space:
“X Layer represents a foundational element in our strategy to educate and bring users into the world of on-chain applications. Its scalability and accessibility make it ideal for developers looking to build consumer-friendly dApps while maintaining cross-chain interoperability.”
Sandeep Nailwal, Co-Founder of Polygon, also commented on the collaboration:
“The use of Polygon CDK marks a major step forward in enabling developers to easily design and deploy ZK L2s on Ethereum. We're excited to work with OKX to advance this technology and support the growth of the X Layer network.”
What’s Next for X Layer and OKX?
In the coming weeks, OKX and Polygon Labs plan to share more details about their technical collaboration and upcoming developer-focused events. These initiatives are intended to encourage more builders to experiment with and deploy on X Layer.
For those interested in engaging with the network, the testnet is currently live, allowing developers and early adopters to explore its capabilities.
👉 Explore the X Layer testnet and developer resources
Frequently Asked Questions
What is a ZK Layer 2 network?
A ZK Layer 2 network uses zero-knowledge proofs to validate transactions off-chain before submitting them to the main blockchain. This increases speed and reduces cost while maintaining strong security guarantees.
How is X Layer different from other Layer 2 solutions?
X Layer is built with Polygon CDK, which emphasizes interoperability with other ZK-based chains. It also integrates directly with the OKX ecosystem, providing built-in user access and OKB token utility.
Can I use my existing Ethereum wallet on X Layer?
Yes. Since X Layer is EVM-compatible, most Ethereum-compatible wallets like MetaMask can be used to interact with dApps on the network.
What role does OKB play in the X Layer network?
OKB is used to pay for transaction fees (gas) on X Layer. This integration strengthens the token’s utility and aligns with OKX’s broader ecosystem strategy.
Is the X Layer mainnet already live?
Currently, the testnet is active. The mainnet launch is expected to follow after thorough testing and community feedback.
How can developers start building on X Layer?
Developers can access documentation, SDKs, and testnet support through OKX’s official developer portal. Tutorials and hackathons are also planned in collaboration with Polygon.
X Layer represents a significant expansion of OKX’s infrastructure offerings and reflects a growing industry trend toward interoperable, scalable Layer 2 solutions. By leveraging Polygon’s CDK, OKX is positioned to contribute to—and benefit from—a connected ecosystem of ZK-powered blockchains.