> From: Richard Weait [mailto:rich...@weait.com] > Subject: Re: [OSM-talk] server migration update / license change > > On Thu, Apr 5, 2012 at 2:49 PM, ThomasB <toba0...@yahoo.de> wrote: > > Thanks a lot for the Update, Richard. It is much appreciated that the > > information flow works. > > > > I have a question with regards to the map at osm.org. When the > > database is clean, it would also need a re-rendering of all tiles in > > cache to finalise the license change. > > Hi Thomas, > > There is no requirement that tiles from osm.org be purged or relicensed > when the data base is published as ODbL. ODbL permits Produced Works > like png tiles to be licensed $notODbL, provided that the ODbL > obligations are met. > > I expect that the map tiles at osm.org will stay CC-By-SA, as they are a > Produced Work, and have a creative aspect. This simplifies several > things, including, no need to purge all the tiles at once, and no need > to have all tile consumers update their copyright information. > > That's not to say that OSM tiles will forever be served as CC-By-SA. > That also does not preclude creating and serving tile sets under other > licenses.
If the tiles are not regenerated then they will contain elements that are licensed as cc by-sa only. If you mix cc by-sa data with other data, doesn't this mean that the entire work is only available as cc by-sa? _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
