Marking best practices also apply for any third party content your work incorporates. Third party content refers to material created by others, or more precisely, in which the licensor is not the copyright holder. Third party content could be offered under a Creative Commons license, restricted by All Rights Reserved copyright, or anything in between. You should obtain any permissions required for your use of third party content and abide by any license restrictions.
Using third party content in your work that is not offered under the same license terms as the rest of your work may require additional marking. If you include works offered under other Creative Commons licenses, additional marking may be required for attribution. If you include third party content in your work that may not be available for reuse under the same terms as the rest of the work, you should warn users and mark it with any additional information that may be helpful. CC offers additional explanation and tips on giving thorough notices and marking for works.
Here's how you may want to consider marking third party content that is offered under different CC licenses.
Example of marking your own work:
Example of marking the differently licensed item:
In general, when using works offered under Creative Commons licenses you should consider adhering to best practices for marking that content.
CC licenses are designed to let others know how they may use a work without infringing copyright. Sometimes, it may be helpful for a licensor to offer users guidance beyond the terms of the license. CC licensors can use notices and marking to inform users of any limitations on the application of the CC license to their work. Typically, creators give either a notice visually next to the relevant content, or at the beginning or end of a work, as appropriate for the medium, or both. There is no singular, correct way to give a notice, and different situations may require more or less complicated notices and marking. CC offers additional explanation and tips on giving thorough notices and marking for works.
CC licenses are designed to let others know how they may use a work without infringing copyright. Sometimes, it may be helpful for a licensor to offer users guidance beyond the terms of the license. CC licensors can use notices and marking to inform users of any limitations on the application of the CC license to their work. Users should carefully observe any notices or marking by the licensor.
When a creator or rightsholder applies a Creative Commons license to a work, the license automatically applies to any copyrights the licensor has in the entire work. Ideally, licensors will have all the rights necessary to license a work, since they otherwise potentially expose users to liability. Alternatively, licensors that do not have all the necessary rights can inform users with notice statements and/or marking that explains the limitations on the license, warning, for instance, that a particular element of a work is not freely available or that additional rights clearance may be necessary. Some licensors may also wish to exempt certain portions of a work from the application of the CC license. For instance, a creator may wish to apply a CC license to one chapter of a book. Creative Commons licenses are flexible in their application, and licensors may use them as they find appropriate. To avoid confusion or misunderstanding on the part of users, however, it is important to mark a work clearly to identify portions not subject to the CC license.
CC has found that licensors often use two mechanisms to mark works like those described above. Some licensors include a general notice within their copyright and licensing notice that identifies those portions of the work that are not subject to the CC license. This may take the form of a general notice letting licensees know that some of the content is not licensed under the CC license applied, may be subject to another license arrangement and/or may not be available for reuse. Ideally, these types of notices specifically identify that content. This style of notice is popular in mediums like video, where a notice at the beginning or the end is convenient and the standard. Other licensors choose to mark the specific content with a notice to that same effect at each instant it occurs, instead of providing a general notice attached to the work. Ideally, licensors will do both for maximum clarity.
As a best practice, licensors should give clear and effective notices. Notice may be in any form the licensor chooses and should clearly explain what rights and substantive portions of a work are and are not licensed. Some licensors include the following general notice along with the license icon: "Except where otherwise noted, this work is available under [license version]." Licensors can then use marking, for instance a watermark, colored background or any other method desired to indicate elements to which the license does not apply. For instance, some licensors individually mark pieces of content to which the license does not apply with explanatory text such as “(c) copyright holder--used with permission” or “The CC license does not apply to this picture.” Licensors in that situation, however, should also ideally explain their marking scheme in the general notice.
There is no one, right way to give notice, and different situations may require more or less complicated notices and marking. The following tips may be helpful, however, in designing a clear and informative notice.
1. Define the work
2. Identify any parts of the work to which the license does not apply
3. Identify the rights licensed that you have in the work (as far as you know) and any rights that are not licensed because you do not have them.
4. Grant any additional permissions
5. Convey any supplementary requests or information