ODBL and CC-BY-SA are different enough that it would probably be difficult to declare compatibility in either direction. ODBL isn't much used yet, so the easiest way to maintain interoperability in the world is for people to continue to not use and/or ODC to retire it. :) That said, CC is happy to have any discussion predicated on maximizing the value of the commons. Certainly that's how we intend to approach development of version 4.0 of the CC license suite.
I'd recommend any non-software copyleft project participate in CC-BY-SA 4.0 discussions and keep an upgrade path to that license open. It may well be that OSM contributor terms could provide that path, as could a highly custom negotiation as provided by FDL 1.3 (which provided a brief window for massively collaborative projects like Wikipedia to migrate to CC-BY-SA), but utilizing those paths are much more costly and time consuming than a version upgrade of the same license.
Posted Jan 15, 2011 20:47 UTC (Sat) by epa (subscriber, #39769)
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ODBL and CC-BY-SA are different enough that it would probably be difficult to declare compatibility in either direction.
They are a fair bit different, but given that ODbL is little used so far and the OpenStreetMap project is the only major source of content to consider it, the intent is the same. The reason why some in OSM wish to use the ODbL is that it is 'CC-BY-SA without the problems' as one put it. I don't agree with that judgement, but it's the reason why the licence is being considered: we want to have something which is like CC-BY-SA, but that 'does not apply' for our project, therefore let's use this other more complex licence.
Given that, a one-off FDL-style relicensing clause could help people achieve what they want, if the 'problems' with CC-BY-SA are resolved in a future version. It would also allow all sides to save face if there were some public reconciliation and group hug between CC and ODC about the way forward for works such as online maps. An optimistic vision, I know...
Reconciliation between CC and ODC
Posted Jan 18, 2011 17:48 UTC (Tue) by mlinksva (subscriber, #38268)
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I think a group hug is eminently possible, whichever of the several possibilities are used to get there. :-)