[bskap]

There's four ways for code to not be copyrighted (in the US):

1. The author died more than 70 years ago or it was owned by a corporation and it's been 95 years since publication

2. It was written prior to 1989 and did not include a copyright notice.

3. It was written by the government

4. The author explicitly released it into the public domain

1 and 2 probably don't cover much code on the Internet. So unless it's a government repository and/or explicitly marked with a public domain notice, you can probably assume it's copyrighted.

[afro88]

But how does an LLM actually know and enforce this? It can be basically tricked into anything