This is what I've been pondering, people are using Claude etc. to produce software. Do they think about this copyright issue at all? Basically whatever they produce with Claude should be not copyrightable.

But what happens if they MIX some of their own code with AI-generated code, is that combination then their copyright? With such combined output it would be very difficult to determine which part was created by human, which by AI, and which by AI but slightly modified by human.

In the domain of graphics the AI could put in some markers which tells the graphic is AI-generated, but with code that is probabaly not possible, code is code and can always be edited by humans.

A separate question is that if I use Claude to generate some code but then stamp the output with my copyright notice, am I doing something illegal?