# X Layer overview

- By Denis Perepelitsyn
- February 14, 2026
- [Web3 Infrastructure & RPC](/blog/?category=Web3%20Infrastructure%20%26%20RPC)

![X Layer overview](/img/blog/post52.png)

X Layer is an Ethereum Layer 2 (L2) network developed by OKX using an enhanced Optimism Stack. It is designed to give developers a more efficient environment for scaling blockchain applications.

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## Key Developer Advantages

- **Full EVM Compatibility:** Easily deploy existing Ethereum applications without changing the code.
- **High Performance:** Supports up to 5,000 TPS with very low gas fees for better scalability.
- **Reliable Security:** X Layer uses an optimistic rollup architecture that inherits Ethereum’s security while offering a simpler and more efficient model compared to ZK rollups.
- **Enterprise-Level Stability:** Features such as the Conductor high-availability cluster provide sequencer redundancy and help maintain 99.9% uptime for production dapps.

## X Layer architecture

The main components of X Layer include:

- **Virtual Machine:** EVM-equivalent
- **Sequencer:** Trusted sequencer implemented by op-node in sequencer mode, working together with op-geth through the Engine API
- **Gas Token:** OKB (fixed supply of 21M after burns and upgrades; L1 OKB is being phased out)

## Conclusion

X Layer has evolved to use the Optimism Stack (OP Stack), a widely adopted and proven Layer 2 scaling framework. In this model, transactions on L2 are treated as valid by default and can be challenged during a 7-day fraud-proof period. This approach improves efficiency and reduces costs while still preserving Ethereum-level security through cryptographic fraud proofs when required.

_This content is for informational and educational purposes only and does not constitute financial, investment, or legal advice._

## FAQ — X Layer

### What is X Layer?

X Layer is an Ethereum Layer 2 network created by OKX using the Optimism Stack. It is designed to improve blockchain scalability, reduce transaction fees, and provide developers with a faster environment for decentralized applications.

### Is X Layer fully compatible with Ethereum?

Yes. X Layer offers full EVM compatibility, allowing developers to deploy Ethereum-based smart contracts and dapps without modifying existing code.

### What are the main benefits of X Layer for developers?

X Layer provides high transaction throughput, low gas fees, Ethereum-level security, and enterprise-grade reliability. It also supports scalable infrastructure for production-ready Web3 applications.

### Which token is used for gas fees on X Layer?

X Layer uses OKB as its native gas token. The token supply is fixed after burns and protocol upgrades.

### How does X Layer maintain security?

X Layer uses optimistic rollup technology built on the OP Stack. Transactions are considered valid by default but can be challenged during a 7-day fraud-proof period, helping preserve Ethereum’s security guarantees.

Tags: [X Layer](/blog/?tag=X%20Layer) [OKX](/blog/?tag=OKX) [Layer 2](/blog/?tag=Layer%202) [OP Stack](/blog/?tag=OP%20Stack) [Ethereum Scaling](/blog/?tag=Ethereum%20Scaling)