[cc-community] BY-SA Question

Gisle Hannemyr gisle at ifi.uio.no
Wed Feb 25 13:19:36 EST 2009


On 25.02.2009 18:06, Rob Myers wrote:
> I have some BY-SA images that I remixed from someone else's BY-SA
> images. This was done back in the CC 2.0 licence era, so the originals
> are BY-SA 2.0 and the derivative/second-generation/adapted/remixed
> images were also placed online under 2.0.
>
> Can I switch to offering the derivatives under 3.0 given the upgrade
> permission of the 2.0 licences,

IMHO: Yes.

> or does that permission not cover
> doing so for an unmodified derivative when a new licence is released?

The text in the 2.0 sa clause says that you're allowed to offer
the derivative "only under the terms of this License, a later version
of this License with the same License Elements as this License, or a
Creative Commons iCommons license that contains the same License
Elements as this License".

I can't see any restrictions against (re-)offering the derivative
under an upgraded version of the license - even if you initially
offered your derivative under an older version.   (You initial
offer still stands, of course, re-offering it under 3.0 does not
change that).  Nor would such a move, IMHO, in any way violate
the "spirit" of the license.  So: Yes.
-- 
- gisle hannemyr [ gisle{at}hannemyr.no - http://folk.uio.no/gisle/ ]
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