Public Domain Mark
Public Domain Mark (PDM) is a symbol used to indicate that a work is free of known copyright restrictions and therefore in the public domain. It is analogous to the copyright symbol, which is commonly used to indicate that a work is copyrighted, often as part of a copyright notice. The Public Domain Mark was developed by Creative Commons and is only an indicator of the public domain status of a work, it does itself not release a copyrighted work into the public domain like CC0.
As there is no single definition of public domain and copyright laws differ by jurisdiction, a work can be in the public domain in some countries while still being under copyright in others (so called hybrid status). It is also difficult to assess the legal status of many works. The PDM is recommended to be used only for works that are likely free from any copyright restrictions worldwide.
- "Creative Commons announces the Public Domain Mark". The H Open. The H. 2010-10-12. Retrieved 2010-10-12.
- Diane Peters (2010-10-11). "Improving Access to the Public Domain: the Public Domain Mark". Creative Commons. Retrieved 2010-10-12.
- "Public Domain Mark - Creative Commons". Creative Commons. Retrieved 2019-01-29.
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