> For the complete documentation index, see [llms.txt](https://docs.onyx.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.onyx.org/readme/about-onyx.md). # About Onyx Onyx, also referred to as the XCN Ledger, is a highly scalable Layer 3 blockchain network that is architected for performance, security, and cost efficiency. It is deployed using the Arbitrum Orbit stack and benefits from the robust security foundation of Coinbase’s Base Layer 2 blockchain. This unique architecture enables Onyx to inherit the modular scalability of Arbitrum while maintaining the security assurances provided by Base, offering an optimized environment for developers building next-generation decentralized applications (dApps). Onyx is fully Ethereum Virtual Machine (EVM) compatible, allowing seamless deployment of smart contracts and interoperability with existing Ethereum-based applications and tooling. Developers can build and deploy decentralized finance (DeFi) protocols, payment solutions, governance frameworks, and other blockchain-based services while leveraging Onyx’s high throughput and low transaction costs. With an institutional-grade infrastructure, Onyx is designed to support large-scale applications and enterprise adoption, ensuring high availability, robust security mechanisms, and scalability optimizations. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.onyx.org/readme/about-onyx.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.