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cc-licenses - Re: [cc-licenses] cc-by-sa and gpl

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Subject: Development of Creative Commons licenses

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  • From: "Prodromos Tsiavos" <p.tsiavos AT>
  • To: "Discussion on the Creative Commons license drafts" <cc-licenses AT>, <adam AT>
  • Subject: Re: [cc-licenses] cc-by-sa and gpl
  • Date: Mon, 2 Jul 2007 19:30:54 +0300

First, thanks to Andres and Paul for their comments :)

Now, a few brief comments:

When we speak about GPL2 and CC_BY_SA compatibility, we may refer to compatibility in two directions, i.e:
1. from GPL2 to CC_BY_SA, which is potentially possible because of the language of CC v3.0, provided GPL2 appears on the CC Compatible licenses list, but is unlikely to happen (as Paul already explained) because of the source code requirements of GPL2
2. from CC_BY_SA to GPL2, which to my opinion is not possible due to the GPL2 wording

Adam, I understand that you seem to be interested in (1), but I don't think you may get a straightforward answer until the list is compiled; hence, the questions that follow in the second part of my email :)

The 'CC-GPL' licence provides only links with meta-data and a human readable version of the basic features of the GPL licence; it is not a different or 'special' GPL licence in any other way.

Hope everyone agrees with the above :)

Second, a few brief questions:

Is there a process established (or a timetable for its establishment) for the identification of the "Creative Commons Compatible Licenses"?

I mean, how and who will decide which are the licences that are CC Compatible?

Was there any related discussions/ outcomes during the iSummit 07?


You may Distribute or Publicly Perform an Adaptation only under the
terms of: (i) this License; (ii) a later version of this License
with the same License Elements as this License; (iii) a Creative
Commons jurisdiction license (either this or a later license
version) that contains the same License Elements as this License
(e.g., Attribution-ShareAlike 3.0 US)); (iv) a Creative Commons
Compatible License. If you license the Adaptation under one of the
licenses mentioned in (iv), you must comply with the terms of that

(i) = same
(ii) & (iii) = similar
(iv) = compatible

As Andres noted licenses which are sufficiently similar in terms of
requirements, permissions and scope would eventually become listed in
the compatible licenses list. i do however doubt that even the GPL 2
will be compatible with CC-BY-SA as the former has lots of clauses
concerning source code which the latter completely lacks. the more
obvious candidates to eventually appear on this list are the GFDL and
the FAL.

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