Cualquier archivo que se suba a Wikimedia Commons debe poseer una licencia de contenido libre o estar en el dominio público, e indicar toda la información posible sobre su estado de copyright. Específicamente, además de indicar una marca de derechos de autor, se debe garantizar que otras personas puedan verificar que lo afirmado en las mismas sea cierto. Para esto se requiere información sobre la fuente original de la imagen y su creador original.
Fuente
¿De dónde vino el archivo?
In order to make sure that the claimed copyright status is accurate, the file description page needs to mention not only who generated the file/ image (which should already have been provided in the |author= field) but where the file in question came from. This is known as its "source" and it allows others to verify that the licensing is correct and the file meets the licensing criteria to be used by anyone, for any purpose, even commercially. Source information should be provided in the |source= field of the {{Information}} template:
If you are uploading a file or image that you have created entirely by yourself, you should mark the source field as |source={{Own}} (this is done for you if you use the upload wizard and select "This file is my own work" during the "Release rights" portion of the process); if you are uploading your own photograph of someone else's work, you should use |source={{Self-photographed}}; if you are uploading your own image that is based on other images already on Commons, you should use the {{Own based}} template like this: |source={{own based |1= |2=}} and after the |1= you should put the name of the first image that you based your own image on (e.g., |1=Myphoto.jpg); if you used a second image as well, place the name of that image after |2=, otherwise you may leave this part of the template blank.
Si un sitio de internet produce fotos y las libera bajo licencias libres, asegúrese de enlazar la localización de la foto dentro del sitio y las condiciones de uso del mismo.
Cuando se afirma que una obra se encuentra en el dominio público debido a su antigüedad, debe conocerse cuándo se creó dicho contenido, para poder verificar que sus derechos de autor realmente hayan expirado. El año de la muerte del creador también es un detalle útil.
¿Cuál es el estado de los derechos de autor del archivo?
A licensing template must be included on the file's description page in order to ensure that the file is freely usable and modifiable under our licensing criteria ("by anyone, for any purpose, even commercially"). If the file's description page doesn't contain a licensing template, then we can't be sure if the file meets our criteria; it might in fact be a copyright violation. Furthermore, it's important for potential reusers to know how to properly reuse the file – some licenses, for example, require one to name the copyright holder of the file ("attribution") and to apply the same license to derivative works ("share-alike"). Licensing templates are usually placed below a == {{int:license-header}} == section header and above any [[Category:]] links.
