About

About CC0 — “No Rights Reserved”

CC0 enables scientists, educators, artists and other creators and owners of copyright-protected content to waive copyright interests in their works and thereby place them as completely as possible in the public domain, so that others may freely build upon, enhance and reuse the works for any purposes without restriction under copyright.

In contrast to CC’s licenses that allow copyright holders to choose from a range of permissions while retaining their copyright, CC0 empowers yet another choice altogether – the choice to opt out of copyright and the exclusive rights it automatically grants to creators – the “no rights reserved” alternative to our licenses.

The Problem

Dedicating works to the public domain is difficult if not impossible for those wanting to contribute their works for public use before applicable copyright term expires. Few if any jurisdictions have a process for doing so easily. Laws vary from jurisdiction to jurisdiction as to what rights are automatically granted and how and when they expire or may be voluntarily relinquished. More challenging yet, many legal systems effectively prohibit any attempt by copyright owners to surrender rights automatically conferred by law, particularly moral rights, even when the author wishing to do so is well informed and resolute about contributing a work to the public domain.

A Solution

CC0 helps solve this problem by giving creators a way to waive all their copyright and related rights in their works to the fullest extent allowed by law. CC0 is a universal instrument that is not ported to any particular legal jurisdiction, similar to many open source software licenses. And while this means that CC0 may not be completely effective at relinquishing all copyright interests in every jurisdiction, we believe it provides the best and most complete alternative for contributing a work to the public domain given the many complex and diverse copyright systems around the world.

Using CC0

Unlike the Public Domain Certification, CC0 should not be used to mark works already in the public domain. However, it can be used to waive copyright or database rights to the extent you may have these rights in your work. In addition, you should only apply CC0 to a work if you own all relevant copyright or database rights in it, or have the necessary rights to apply CC0 to another person’s work.