There is no registration to use the Creative Commons licenses. Licensing a work is as simple as selecting which of the six licenses best meets your goals, and then marking your work in some way so that others know that you have chosen to release the work under the terms of that license.
Our license-choosing tool can help you select the right license.
Flickr was one of the first major online communities to incorporate Creative Commons licensing options into its user interface, giving photographers around the world the easy ability to share photos on terms of their choosing. As the Flickr community grew, so did the number of CC-licensed images — currently there are well over 200 million on the site — establishing Flickr as the Web’s single largest source of CC-licensed content. Read our Case Study for Flickr
Leading pharmaceutical company
One of the leading pharmaceutical companies in the world, GlaxoSmithKline has surrendered all copyrights in its malarial data set, which includes more than 13,500 compounds known to be active against malaria. GlaxoSmithKline has surrendered all copyright in its malaria data set under the CC0 public domain dedication. Read our Case Study for GlaxoSmithKline