> From: Richard Weait [mailto:rich...@weait.com] > Subject: Re: [OSM-talk] server migration update / license change > > On Thu, Apr 5, 2012 at 4:07 PM, Paul Norman <penor...@mac.com> wrote: > > If the tiles are not regenerated then they will contain elements that > > are licensed as cc by-sa only. > > "Old tiles", the tiles generated at osm.org right now, are created from > a CC-By-SA data base and are CC-By-SA tiles. No problem. > > > 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? > > No. You can, and some have, published All Rights Reserved C books with > CC-By-SA OSM map images included. No problem there. > > In the case of osm.org tiles, there is even less of a problem. > 1) "Old tiles", the current ones, are ccbysa from a ccbysa data base. > That's fine. > 2) "Future tiles", after the license switch is thrown, will be ccbysa > from an ODbL data base. That's fine. > 3) The Collective Work [1] of "old tiles" and "future tiles" in the > OpenLayers frame on osm.org will also be CC-By-SA. > > So I don't see where there would be a licensing concern. > > There IS a "mapper concern." We'd like to keep the tiles fresh, > wouldn't we? So updating cached tiles after any update is something > that we all like to see. But I don't see a licensing concern here. > :-) > > [1] term from CC-By-SA for combining separate works. In this case, each > tile is a separate work.
If you start having some tiles where the produced work is CC by-sa with the underlying data also cc by-sa and some where the produced work is cc by-sa with the underlying data ODbL, how do you do attribution for each tile differently? _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk