Surge is a composable scaling metalayer for Bitcoin, aiming to support the BTCFi economy. It provides an environment where rollups, decentralized applications (dApps), and metaprotocols can interoperate on a decentralized intermediary layer. This layer seeks to increase Bitcoin's functionality by supporting higher throughput, cost efficiency, and programmability. Surge uses cryptographic technologies like zero-knowledge proofs and designs its core architecture to achieve scalability while maintaining security.