What is the Creative Commons Public Domain Mark?

The Public Domain Mark is a label, not a license. It tells a reuser that the person applying the mark believes the work is free of known copyright restrictions worldwide. You do not grant permission when you use it. You indicate a factual conclusion about a work's status. The decisive exception: the Public Domain Mark changes no legal rights. A reuser must still check whether other laws, privacy, publicity, trademark, contract, cultural heritage, permit the intended use. Open the original source page. Record the exact deed and version. Verify that no non-copyright restrictions apply before reusing the material.

The Public Domain Mark (PDM) was designed for works already in the public domain. Creative Commons states that PDM is appropriate only for material believed free of known copyright restrictions worldwide. That means a work whose copyright term has expired in every country that could claim protection, or a work that never attracted protection in the first place. A government document published before a certain year, a photograph taken before a cut-off date, a book whose author died more than a century ago, these are common candidates.

What The Mark Actually Does

The mark does not grant permission. It signals a belief. The person applying PDM is asserting that no permission is needed. If that belief is wrong, the reuser may still be infringing. PDM carries a deed and legal code just as a license does, but the legal code grants no rights. It states that the affirmer is not aware of any copyright or related rights in the work. That is a very different legal effect from the CC0 dedication.

CC0 and the Public Domain Mark are not two more licenses in the Creative Commons suite. CC0 is a public-domain dedication with a waiver, a fallback license where waiver is not effective, and a non-assertion promise limited to remaining Copyright and Related Rights. It aims to remove copyright and related-right conditions as far as the affirmer is legally able. PDM changes no rights. It marks material believed to be free of known restrictions worldwide.

Which Tool For Which Job

A creator who owns copyright and wants to dedicate a work to the public domain uses CC0. A museum that has digitised an out-of-copyright painting uses PDM on the digital image. The museum does not own copyright in the painting, but it can label the digital copy with PDM to indicate that it believes the painting itself is in the public domain. That distinction is the decisive exception to the idea that either tool "puts a work into the public domain." CC0 actively waives rights. PDM passively describes a status.

A work carrying the Public Domain Mark may still be subject to rights that copyright does not cover. The official Creative Commons documentation lists privacy, publicity, trademark, patent, contract and cultural-heritage law as examples. A photograph of a person in a public space may be free of copyright restrictions but still require a model release for commercial use. A recording of a traditional folk song may be in the public domain, but a community's cultural-heritage rules may govern its use. A trademark visible in an image of a building is not licensed by PDM.

Database Rights And Other Traps

The mark says nothing about database rights, which under some legal systems persist even after copyright expires. The reuser carries the responsibility to check every applicable law before reuse. No Creative Commons tool guarantees that non-copyright law permits a use. This is not a hypothetical edge case. It is the most common failure point when someone relies on PDM alone.

Apply PDM only if you have a reasonable basis to believe the work is free of known copyright restrictions worldwide. Do not use it for material you created yourself, use CC0. Do not use it for material whose copyright status you have not verified. Do not use it for a work that might be in the public domain in one country but not in another, unless you are certain it is in the public domain everywhere.

Verify Before You Mark

The Creative Commons FAQ states that copyright status depends on jurisdiction, author, publication facts, term, restoration rules and the type of work. One publication year does not decide the issue. A US government work may be in the public domain in the United States but still protected in Europe under the rule of the shorter term. PDM is not appropriate for that work unless you verify its status in every jurisdiction that matters for your reuse. Consult the relevant copyright term calculator or a legal professional familiar with international law.