Here’s another snippet related to Linked Open Data. As you may imagine, one wrinkle in sharing cultural heritage and other materials in digital collections is copyright. To ameliorate some of the concerns surrounding the intellectual property rights, LOD-LAM proposes a 4-star classification scheme for linked open cultural metadata.
**** Public Domain (pre 1923 and other cases)
*** Attribution License (CC-BY / ODC-BY) where the licensor considers linkbacks to meet the attribution requirement
** Attribution License (CC-BY / ODC-BY) with another form of attribution defined by the licensor
* Attribution Share-Alike License (CC-BY-SA/ODC-ODbL)