QED is a zk-native execution layer for Bitcoin, designed to meet the challenges of Web3 development. This horizontally scalable, secure, and user-friendly platform is built for developers and users, supporting a wide range of applications from DeFi to NFTs. Decentralized applications built on QED can prove transactions locally, providing users with unlimited computation with fixed gas fees. This innovative approach ensures that each user's public key acts as a custom ZK circuit with a "smart signature" that can be read from the state, similar to a smart contract.