BitcoinOS (BOS) is an open protocol designed to extend Bitcoin’s role from a secure monetary network into the foundation for a programmable, scalable, and interoperable internet economy. Built with Bitcoin as its settlement layer, BOS introduces tools that enable developers to build decentralized applications, financial services, and cross-chain solutions while preserving Bitcoin’s security guarantees. Launched in 2025, BitcoinOS focuses on addressing four key challenges that have limited blockchain adoption: scalability, programmability, fragmentation, and trustless interoperability. By creating a unified operating system on top of Bitcoin, BOS provides infrastructure for both developers and institutions seeking to build reliable, scalable applications anchored in Bitcoin’s security model.