Markup for image copyright/licensing

Hello all,
  I'm wondering if someone can advise me what the best
markup would be 
for including copyright information about an image. At the
end of an 
article I'd like to create a list of all the images used
within the 
document. I'd like to include a title, owner, thumbnail,
license, and 
links to resources (for example, the original).

What I've got so far is:
------------------------------------------------------------
---
<mediaobject>
   
<info><copyright><year>2007</year>&l
t;holder>Jonathan 
Lee</holder></copyright></info>
    <alt>Rubin's Vase</alt>
    <imageobject><imagedata
fileref="../img/rubin.jpg"/></imageobject>
;
    <imageobject><imagedata
fileref="../img/rubin_thumb.jpg"/></imageobj
ect>
</mediaobject>
------------------------------------------------------------
---

My problems as I see them:
    I'm using <alt> for the image title which feels
wrong. <mediaobject> 
insists on using the titleforbidden variant of
<info>.
    I'm not sure what to use for a license element. I'd like
to link to 
a creative commons license, for example.
    I'd also link to the holder's home page.
    And a link to the original image (for example, from a
page on Flickr)

What are the proper solutions for these problems?

Thanks
--Jonathan

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