I haven't found any sources about this, so the following is just my hypothesis based on the information I could find, and what I already knew. Opensource.org is not the author of any of the licenses reproduced on this site. Questions about the Intellektuelles eigentum rein a license should be https://osd41848.thekatyblog.com/32921533/eine-unvoreingenommene-sicht-auf-購買osd證書