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CC0 is the "no copyright reserved" option in the Creative Commons toolkit - it effectively means relinquishing all copyright and similar rights that you hold in a work and dedicating those rights to the public domain.

CC0 is a single purpose tool, designed to take on the dedication function of the former, deprecated Public Domain Dedication and Certification.

How effectively CC0 works will depend on the legal regime in which the work is used, but the tool is intended to effectively release rights even in jurisdictions where it is difficult to do so.

Note that CC0 is a three-tier instrument. We recognize that a waiver may not be effective in some jurisdictions. CC0's enforceability is not solely dependent on the waiver. The fall back public license -- the second tier -- is similar to our Attribution-only license but without the attribution requirement. The third tier is a non-assertion by the copyright holder that even if the waiver and license do not operate as intended, the copyright holder will not take any actions that prevent a user of the work from exercising rights consistent with the intention of the copyright holder as expressed in CC0.

For detailed information, see the CC0 FAQ.

CC0 Translations

Translations of CC0 may be conducted according to the Legal Code Translation Policy.

See the CC0 translations completed or in progress.