Miniscript is a high-level programming language that is used to write Bitcoin smart contracts. It is a simplified version of the Bitcoin Script language, which is the native programming language of the Bitcoin network. Miniscript allows developers to write smart contracts in a more readable and easier-to-understand format, which makes it easier to reason about the behavior of the contracts. Miniscript also includes a number of features, such as type checking and static analysis, that make it easier to write correct and secure smart contracts. The use of Miniscript has grown in popularity in recent years, and it is now supported by many different Bitcoin wallets and other tools.