Using CC0 assets in work for a client on fiverr - allowed and fully legal?

[andrzejdeja]

Let's assume that I am doing a 3D project for a client, among my models and assets I use a texture / image from the Internet marked as CC-0 license:

"The Creative Commons CC0 license gives you near limitless freedom to use the materials, models and other assets: You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission."

https://creativecommons.org/publicdomain/zero/1.0/

I provide the client with a source file containing said texture. Of course it is only a small part of the overall project.

Is it okay in terms of a legal / licensing aspect? 

Edited March 14, 2023 by andrzejdeja