Creative Commons released "Public Domain Mark" tool that enables works free of known copyright restrictions to be labeled in a way that allows them to be easily discovered over the Internet. PDM to be used for marking works already free of copyright, complements Creative Commons' CC0 public domain dedication, which enables authors to relinquish their rights prior to expiration of copyright.
"PDM's a further step on the path towards making the promise of a digital public domain a reality," said Michael Carroll.
Public Domain Mark in its current form is intended for use with works that're free of known copyright around the world, primarily old works beyond the reach of copyright in all jurisdictions. We've already started mapping the next phases of our public domain work, which'll look at ways to identify and mark works in the public domain in a limited number of countries.
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