OP_CHECKTEMPLATEVERIFY (CTV) is a proposed new opcode that takes a commitment hash as a parameter and requires any transaction executing the opcode include a set of outputs that match the commitment. This makes it possible to create an address that specifies how any funds received to that address may be spent—a design known in Bitcoin as a covenant.

-- https://bitcoinops.org/en/topics/op_checktemplateverify/

Can really recommend Bitcoin Optech to look stuff like this up. They also have a newsletter.