OKX collaborates with Polygon Labs on layer-2 network launch
Seychelles-incorporated OKX, one of the world’s largest cryptocurrency exchanges, has collaborated with blockchain development firm Polygon Labs to unveil the testnet for its latest zero-knowledge layer-2 network, named “X1.”

Introducing “X1”
The company announced initial details on X1 via a press release published on Tuesday. This Ethereum-based ZK network has been constructed using the Polygon Chain Development Kit (CDK), with OKX playing a pivotal role as a core contributor to the CDK. Substantial engineering resources are being invested by OKX to strengthen the Ethereum scaling solution.
The new network will serve to bolster the utility of OKX's native token, OKB. OKB will be used for X1’s gas fees. There has been a lot of chatter about the utility of exchange tokens following the collapse of FTX, as that platform was over-reliant on its native token in propping up the exchange. Similarly, critics are speculating that a comparable dynamic may be at play at Binance, relative to its native token BNB.
Likely buoyed by news of this development, OKB observed a 10% unit price increase on Tuesday. However, that move has retraced downwards in the meantime.
ZK proof technology
X1 has been designed with ZK proofs, a method through which one party can convince another that a particular claim is true without disclosing details of the claim itself. In this way, X1 ensures high security and scalability while mitigating transaction costs. The network seamlessly aligns with Ethereum, facilitating the secure deployment of EVM-based dApps and connectivity with a wide array of smart contracts, wallets and tools. OKX underscores X1’s status as its new native network.
Chief Innovation Officer of OKX, Jason Lau, expressed optimism about X1, deeming it integral to the firm’s efforts in guiding users into the realm of Web3. Lau emphasized the scalability and accessibility of X1, especially for developers who can leverage it to construct user-friendly Web3 applications while maintaining interoperability with other networks.
The collaboration with Polygon Labs marks another milestone in the evolution of Polygon’s CDK. Launched in August, the CDK enables the development of layer-2 blockchains on Ethereum, emphasizing zero-knowledge proofs. Networks deployed using the CDK gain the ability to connect to a shared ZK bridge, fostering interoperability.
Sandeep Nailwal, co-founder of Polygon, underscored the significance of X1’s adoption of Polygon CDK technology, envisioning a future where CDK-deployed chains interoperate and coexist within a larger network of ZK-powered layer 2s in the Polygon CDK ecosystem. The CDK has gained traction, with various Layer 2s, including Immutable zkEVM, IDEX, Palm Network and Astar zkEVM, currently in development using this technology.
Industry trend
A trend is developing among crypto exchange platforms and their involvement in establishing layer two networks. Earlier this year, U.S. crypto platform Coinbase introduced the Base network, an Ethereum layer-2 network that focuses on offering a safe, low-cost and developer-friendly mechanism to build on-chain.
Last week, it emerged that another leading U.S.-based crypto platform, Kraken, is on the lookout for a development partner to enable it in building out its own layer-2 blockchain network. According to those reports, it’s understood that Kraken is considering partnering with Polygon Labs, Matter Labs or the Nil Foundation.
As this OKX-Polygon Labs collaboration progresses, the industry will continue to observe how X1, with its innovative technology stack and seamless integration with Ethereum, contributes towards broader Web3 development.


