openlayers/ol3 — pull request #499 by twpayne (2013-04-07 20:51:48+00:00)
Title: OpenStreetMap licenses are inconsistent

Right now, there are three different licenses for OpenStreetMap data:

* Our own source claims that it's [CC-SA-2.0](https://github.com/openlayers/ol3/blob/master/src/ol/source/openstreetmapsource.js#L14)
* Stamen thinks that it's [CC-SA-3.0](http://maps.stamen.com/#watercolor/12/37.7706/-122.3782) (scroll down to "How to Use These Tiles Elsewhere / COPY HTML)
* OpenCycleMap thinks that it's [ODbL](http://opencyclemap.org/) (see attribution and link in bottom left corner)

At least two of these three are wrong. Who's correct? The [OpenStreetMap copyright page](http://www.openstreetmap.org/copyright) would suggest that it's OpenCycleMap.

Does anybody actually know?