What CC0 Means

CC0 enables scientists, educators, artists and other creators and owners of copyright- or database-protected content to waive those 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 or database law.

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 database protection, and the exclusive rights automatically granted to creators – the “no rights reserved” alternative to our licenses.


Creative Commons offers additional information about CC0 here.


How to Use CC0 Sources in Lumen Courses

OER material with a CC0 license allows you to apply any of the 5R’s (reuse, revise, remix, redistribute, and retain) to it.  You can copy & paste it straight into Candela; you can adapt it; or you can remix it with other CC sources (except CC-ND).


How to Attribute CC0 Sources in Lumen Courses

Though CC0 works legally do not have to be attributed, it’s good practice to identify and credit them in your Lumen course.  This can be easily done using the Citations tool.  That way, you’re modeling good citation practice for your students, and allowing other viewers who might be interested in the content to be able to track it down for themselves.


  1. In the “Citations” portion of your Edit Page, beneath the text editor box, select “CC Licensed Content.”Locating the CC Licensed Citations tool in the Citations Pull-down menu
  2. Add as much information about the Description of the Content, the Author, the Organization, the URL, and the Project as you have available.
  3. Under the “Licensing” pull-down menu, select “CC0: No Rights Reserved.” Locating the CC0 option on the pull-down menu in Citations
  4. Click Update on the right to Save the page (or “Publish” if the page hasn’t yet been published).



How to Apply it to Your Original Work in Lumen Courses

If you create material in your Lumen book that you’d like to license as CC0, you can use the same tools to cite it as noted above.  Use the “Description” and “Author” fields in the Citation section to give yourself credit for this work.  Including your “Organization” (such as school name) and/or the URL for your institution will be helpful if others want to contact you about this work later on.

Creative Commons offers more information about using CC0 on your own work here.