Nock

Nock is a minimal, low-level programming language used in the Urbit system to define and manipulate data and computations through simple, atomic operations. It is based on a small set of universal building blocks called "arms," which perform basic functions like data retrieval, conditional logic, and function application. Think of Nock as a highly efficient, foundational language that can be combined to create more complex programs, all while maintaining a fixed, predictable structure. Its simplicity ensures security and consistency, making it ideal for secure, decentralized computing environments like Urbit.