What is OP_CTV?

It's Bitcoin's missing covenant capability, in my opinion.

In simple terms, covenants allow you to restrict where Bitcoin can be spent after it's received.

Today, signatures only control who can spend Bitcoin.

With OP_CTV, you could specify "this Bitcoin can only be sent to address X" or "only to a burn address if slashing occurs."

This seemingly small addition enables entirely new applications while preserving Bitcoin's security model: from trustless staking to vaults to bridges.