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Creative Commons Metadata and XMP

<a href="http://www.adobe.com/products/xmp">XMP</a> (Extensible Metadata Platform) facilitates embedding metadata in files using a subset of RDF. Most notably XMP supports embedding metadata in PDF and many image formats, though it is designed to support nearly any file type.

The Creative Commons <a href="/license/">licensing process</a> offers a XMP template which may be used to mark files within XMP-supporting <a href="xmp-help">Adobe applications (step-by-step how-to document)</a>.

LaTeX users may use the <a href="/weblog/entry/4270">pdflatex macro</a>.

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Note on Visible Copyright Notice in PDFs

Even when embedded with XMP metadata a licensed PDF document should include a visible copyright notice as described in <a href="web">how to tag works</a>.

XMP Rights Management Schema

XMP <a href="http://partners.adobe.com/asn/tech/xmp/download.jsp">defines</a> a rights management schema (see section 4.2.5). Creative Commons sets the following properties (example values):

xapRights:Copyright

This work is licensed to the public under the Creative Commons Attribution-ShareAlike license http://creativecommons.org/licenses/by-sa/2.0/ (Replace 'Attribution-ShareAlike' and license URL with relevant pretty name and URL for chosen license.)

xapRights:Marked

False if Public Domain, True otherwise.

xapRights:WebStatement

http://creativecommons.org/licenses/by-sa/2.0/ (Replace with relevant license URL.)

We also set cc:license for compatibility with other CC RDF applications and to maintain a direct reference to the license URL when xapRights:WebStatement references an intermediate page (see Advanced Usage below).

cc:license

http://creativecommons.org/licenses/by-sa/2.0/ (Replace with relevant license URL.)

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Advanced Usage

If a page with metadata describing the work with embedded XMP and its license status is available, the value of xapRights:Copyright and xapRights:WebStatement may be extended and modified as follows:

xapRights:Copyright

This work is licensed to the public under the Creative Commons Attribution-ShareAlike license http://creativecommons.org/licenses/by-sa/2.0/ verify at http://example.com/pdf-metadata.html (Replace URL following 'verify at' with URL containing metadata about the XMP-embedded file.)

xapRights:WebStatement

http://example.com/pdf-metadata.html (Replace with URL containing metadata about the XMP-embedded file.)

The XMP logo is either a registered trademark or tradmark of the Adobe Systems Incorporated in the United States and/or other countries.