While public chains such as Ethereum have helped drive the growth of DeFi, NFTs, and on-chain applications, they also face rising transaction costs, network congestion, and limited scalability. To improve blockchain processing capacity, Layer2 networks have gradually become an important direction for the industry. By moving part of transaction processing off the main chain, Layer2 networks can improve transaction efficiency and reduce user costs while maintaining the security of the main chain.
As a Layer2 network launched by OKX, X Layer is designed not only to expand on-chain performance, but also to connect trading platforms, Web3 wallets, and on-chain application ecosystems.
As a Layer2 network built on the Ethereum ecosystem, X Layer is mainly used to improve blockchain scalability and the efficiency of on-chain interactions. Compared with executing transactions directly on the main chain, Layer2 can increase network throughput and reduce transaction costs through off-chain processing, batch verification, and other methods.
X Layer is built on Polygon CDK and is compatible with EVM. This means developers can more easily migrate applications from the Ethereum ecosystem to X Layer while maintaining compatibility with the existing smart contract ecosystem.

As on-chain applications continue to grow, performance pressure on the Ethereum mainnet has also increased. Fluctuating gas fees, longer transaction confirmation times, and network congestion have gradually become major factors affecting the user experience.
Blockchain networks usually need to balance security, decentralization, and scalability. This challenge is also known as the “blockchain trilemma”: Security+Decentralization+Scalability
The core goal of Layer2 is to improve transaction processing capacity while preserving the security of the main chain. Compared with executing transactions directly on the main chain, Layer2 networks can usually offer lower transaction costs and faster confirmation speeds.
X Layer operates mainly around the logic of “off-chain execution plus main-chain verification.” Transactions made by users on the Layer2 network are first processed and compressed in an off-chain environment, then submitted together to the main chain for final verification.
This model reduces the number of transactions the main chain must process directly, improving overall network efficiency. Compared with relying entirely on the main chain for transaction execution, Layer2 networks can lower gas costs while increasing transaction throughput.
Because X Layer works in coordination with the OKX Web3 Wallet, users can switch more easily between centralized platforms and on-chain applications. This structure also means Layer2 is no longer just a technical scaling solution, but an important infrastructure layer that connects multiple Web3 services.
OKB is the core exchange token within the OKX ecosystem, and within the X Layer ecosystem, its role is gradually expanding from trading benefits to on-chain coordination scenarios.
As trading platforms continue to expand into Web3 infrastructure, the functions of exchange tokens are no longer limited to trading fee discounts. In X Layer, OKB is closer to an ecosystem connectivity asset, used to support on-chain services, ecosystem incentives, and certain Web3 application scenarios.
This shift reflects a broader trend in the development of exchange token ecosystems. In the past, exchange tokens were used more within centralized trading systems. With the growth of Layer2 and multichain ecosystems, however, exchange tokens are beginning to take on coordination roles within on-chain networks.
There are many types of Layer2 networks in today’s market, including Optimistic Rollups, ZK Rollups, sidechains, and other structures. Different Layer2 networks also focus on different directions.
One of X Layer’s main features is its deep integration with the trading platform ecosystem. Compared with some Layer2 projects that focus more purely on on-chain scaling, X Layer places greater emphasis on coordination among wallets, trading platforms, and Web3 services.
In addition, because it is built on Polygon CDK, X Layer offers strong EVM compatibility, which can lower the barrier for developers migrating applications.
| Layer2 Network | Core Features | Ecosystem Direction |
|---|---|---|
| X Layer | OKX ecosystem coordination | Web3 + CeFi |
| Arbitrum | Optimistic Rollup | DeFi scaling |
| zkSync | ZK Rollup | High-performance payments |
| Base | Coinbase ecosystem | Web3 applications |
The differences among Layer2 networks essentially reflect differences in their ecosystem strategies and user entry points.
As the Web3 industry develops, competition among trading platforms is no longer limited to trading depth and liquidity. It is gradually expanding into wallets, on-chain networks, and multichain ecosystems.
The launch of X Layer allows OKX to further connect Web3 wallets, on-chain assets, and DeFi applications, creating a more complete ecosystem structure.
In this process, the role of OKB is also changing. The exchange token is no longer merely a benefits tool inside a trading platform. Instead, it is gradually becoming an important asset that connects on-chain services and ecosystem networks.
Although Layer2 improves blockchain scalability, the related ecosystem is still developing rapidly and carries certain risks.
Cross-chain bridge security has long been one of the industry’s key concerns. Since Layer2 networks usually need to interact with the main chain for asset transfers, the security of bridge protocols and verification mechanisms is extremely important.
In addition, ecosystem compatibility between different Layer2 networks, fragmented liquidity, and differences in technical standards may also affect the user experience.
As a Layer2 network launched by OKX, X Layer is designed to improve blockchain scalability, reduce on-chain costs, and further connect trading platforms with the Web3 ecosystem.
As Layer2 becomes an important direction for blockchain scaling, trading platforms are also gradually expanding from single trading entry points into on-chain infrastructure and ecosystem services. The role OKB plays in X Layer reflects the development trend of exchange tokens as they move from “trading benefits tools” toward “on-chain coordination assets.”
X Layer is built on Polygon CDK and is compatible with the Ethereum Virtual Machine (EVM).
Layer2 can reduce transaction costs, improve transaction speed, and expand the scale of blockchain applications.
OKB plays an ecosystem coordination role in X Layer and can be used to support on-chain services and Web3 application scenarios.
X Layer is a Layer2 network within the Ethereum ecosystem and completes final security verification through the main chain.
Layer2 may involve risks related to cross-chain bridge security, protocol vulnerabilities, and ecosystem compatibility.





