Rusty Russell on Nostr: The problem with CTV is fees. When you look at most designs using CTV, they need ...

The problem with CTV is fees. When you look at most designs using CTV, they need *another* tx, and an anchor output, so they can pay fees.

What they really want is "this tx, plus an input and optional change output".

People tend to ignore fees in their protocol design. But I'm implementation they're critical, and only getting more so. Lightning has been down this path!