The Public Domain will allow cultural organizations using Sketchfab to share their data.

Cultural organizations using Sketchfab can dedicate their data to Public Domain via Creative Commons Public Domain Dedication. It will allow museums and similar organizations to share their 3D data more openly. This update also gives an opportunity for 3D creators to download, reuse and remix incredible ancient and modern artifacts, objects, and scenes.

Sketchfab adopted Creative Commons license in 2014. As for now, over 300,000 3D models have become available for the reuse under various licenses. 

Read the full announcement for more details.