# Welcome to O3 Layer

### Welcome

This whitepaper introduces **O3 Layer**, a modular Layer 3 (L3) protocol conceptually built on Bitcoin. Leveraging Arbitrum’s Orbit Stack for execution and Avail as the data availability (DA) layer, O3 Layer explores new possibilities for scalability, composability, and decentralized infrastructure in the Bitcoin ecosystem.

The document outlines the technical foundations of the proposed Layer 3 architecture, its modular design principles, token economics, security considerations, and broader ecosystem objectives. O3 Layer is designed to support experimentation with real-world use cases including decentralized applications, AI-integrated systems, and financial protocols—all while extending Bitcoin's utility beyond its traditional role.

By presenting a forward-thinking approach to Bitcoin scalability, this whitepaper sets the stage for new innovations in modular blockchain infrastructure.
