Miniscript

Miniscript language for Bitcoin is unveiled. "It's a language for writing (a subset of) Bitcoin Scripts in a structured way, enabling analysis, composition, generic signing and more."

Also here: "Pieter Wuille Unveils ‘Miniscript,’ A New Smart Contract Language for Bitcoin" https://www.coindesk.com/pieter-wuille-unveils-miniscript-a-...