The Cologne University Library, the Cologne University of Applied Sciences Library, the Cologne Public Library, the Academy of Media Arts Cologne Library and the Library Centre of Rhineland-Palatinate announced to publish their catalog data in cooperation with the North Rhine-Westphalian Library Service Centre (HBZ).
All data is published under the Creative Commons CC Zero. The data is in the public domain, hence it belongs to all and may be used for any purpose without restrictions. To the extent possible under law, the person who associated CC0 with this work has waived all copyright and related or neighboring rights to this work.
HBZ Press release (english)
Heise Online Meldung (german) (Google translation to english)