Maestro has launched Symphony, the world's first fully audited Bitcoin indexer, now available as open source. Symphony is designed to support large-scale Bitcoin applications, processing billions of transactions and supporting metaprotocols like BRC-20, Runes, and Ordinals. This modular software system aims to enable developers to create sophisticated financial applications on Bitcoin. The system was independently audited by cybersecurity firm Thesis Defence, ensuring reliability and security for developers. By open-sourcing Symphony on GitHub, Maestro provides a robust foundation for projects such as lending platforms, stablecoins, and tokenized assets on Bitcoin. Maestro currently supports over 1,000 developers and 250 applications worldwide.