In section 3(a) of the Creative Commons Attribution license (and I think all the others too) it says:
If You Share the Licensed Material (including in modified form), You must:
A. retain the following if it is supplied by the Licensor with the Licensed Material:
identification of the creator(s) of the Licensed Material and any others designated to receive attribution, in any reasonable manner requested by the Licensor (including by pseudonym if designated);
a copyright notice;
- a notice that refers to this Public License;
- a notice that refers to the disclaimer of warranties;
- a URI or hyperlink to the Licensed Material to the extent reasonably practicable;
B. indicate if You modified the Licensed Material and retain an indication of any previous modifications; and
C. indicate the Licensed Material is licensed under this Public License, and include the text of, or the URI or hyperlink to, this Public License.
This makes it look like that if the original author notes that the work is licensed under the licensed (which they surely will) you must reproduce that notice, as well as indicate yourself that your publication has used material licensed under the license, i.e. that you must mention the CC BY license twice.
Which doesn't make much sense!
- How is such a "notice" defined?
- What is an example of one?
- How should these two clauses be understood together?