COTI is a groundbreaking blockchain network designed to enable computation on encrypted data through the use of Garbled Circuits. By combining advanced cryptographic techniques with blockchain technology, COTI opens new possibilities for secure and private data processing. The developer documentation serves as a comprehensive guide to understanding and working with the COTI network, offering a technology overview, a quickstart guide, and developer tools. COTI uses battle-tested cryptography to serve fast and scalable Privacy-on-Demand to projects on all major blockchains. It offers end-to-end privacy, confidential smart contracts, composable, programmable privacy, and lightweight computation, regardless of complexity.