Our Public Domain Tools
Our licenses help authors keep and manage their copyright on terms they choose. Our public domain tools, on the other hand, enable authors and copyright owners who want to dedicate their works to the worldwide public domain to do so, and facilitate the labeling and discovery of works that are already free of known copyright restrictions.
CC0
Use this universal tool if you are a holder of copyright or database rights and you wish to waive all your interests, if any, in your work worldwide. This may be the case if you are reproducing an underlying work that is in the public domain and want to communicate that you claim no copyright in your digital copy where copyright law may grant protection.
Public Domain Mark
Use this tool if you have identified a work that is free of known copyright restrictions. Creative Commons does not recommend this tool for works that are restricted by copyright laws in one or more jurisdictions.