Under United States law since 1989, copyrightable works automatically receive copyright protection upon creation, and no copyright notice (or notice of reserved rights) is necessary to preserve such rights (although such notice, and registration with the Copyright Office, may be relevant in determining damages for infringement).
If you wish to retain all exclusive rights to your work, please either select no license or select "All Rights Reserved" for the License field. If you wish to allow others to distribute your work, please select one of the Creative Commons licenses below. If you wish to distribute your work under a license that isn't listed, please indicate such license in the Description/Comments field and don't select any license in the License field.
Below are descriptions adapted from the Creative Commons website:
This license lets others distribute, remix, tweak, and build upon your work even for commercial purposes, as long as they credit you and license their new creations under the identical terms. All new works based on yours will carry the same license, so any derivatives will also allow commercial use. This is the license used by Wikipedia.
This license is the most restrictive of the six main Creative Commons licenses, only allowing others to download your works and share them with others as long as they credit you, but they can't change them in any way or use them commercially.
To distribute a remix, one needs a license from all contributers to the the remix. For example, if Alice creates a work and releases it under a CC BY-NC license, and Bob remixes it with a song released under CC BY, then the resulting remix can only be distributed non-commercially. Bob can distribute his remix under the terms of any of the three CC licenses with the NonCommercial element as well as a traditional license that doesn't allow redistribution (provided that Bob's distribution is non-commercial). As another example, if Alice releases a work under CC BY-SA and Bob releases a work under CC BY-NC-SA, then a third-party, say Charlie, cannot remix those two works together and distribute the remix, because the remix cannot be distributed under terms that satisfy both CC BY-SA and CC BY-NC-SA.
This license gives others the right to privately remix and tweak the original author's work; however it does not give them the right to distribute such remixes (commercially or otherwise) to anyone except the original author. This license does not require that collaborators be paid any royalties for their contribution; however, collaborators have a right to attribution if the original author chooses to distribute the remixed work. Full License
Nothing on this page shall be construed as legal advice. Licensors and licensees are responsible for reading and understanding the full text of the license used.