[OSM-legal-talk] Multiple license declaration

[Jim Brown]

Legal issues aside, map data (and ongoing versions of map data edited by different individuals) is intertwined.  Which is to say that people build on the contributions of others both in elements that co-exist and elements that are direct descendants of each other.

In the end, it's like a book written and edited by a community of authors, each building on, and deriving from, each others work.

My suspicion is that a system where each user can choose a different licence (or set of licences) for their contribution would either fall apart (as some entities would need to be rolled back to the last version compatible with the current use case and other items would co-exist under different licences as different entities in the db).

I am supposing that both editors and extractors would specify a license and the content (shown for editing or extracted to a file) would be dynamically filtered from all the data and versions available.  In the case of editors, if an earlier/compatible version is edited it would imply a fork of the item under edit at the prior version.

I may not actually understand what you intend as a result of this (from a practical, data management stand point) so my concern may be misplaced.

Jim Brown -CTO CloudMade

On 26 Jun 2011, at 16:39, "TimSC" <mappinglists at sheerman-chase.org.uk> wrote:

> Hi all,
> 
> I wanted to create a way for individual users to relicense their data 
> under difference licenses. Since OSM and derivatives are OAuth capable, 
> it is possible to authenticate a user and get them to agree to a 
> license. This can be stored in a machine readable format. I hope this 
> will be useful in transferring data between forks, particularly if a 
> significant number of people chose permissive licenses. From what I can 
> tell, most mappers pretty much agree to any license they are presented 
> with. :)
> 
> http://timsc.dev.openstreetmap.org/extralicenses/
> 
> At this stage, I was hoping for ideas for improvements of the legal 
> issues. Any thoughts?
> 
> TimSC
> 
> 
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