Can I offer the same work under more than one licence?

Yes, you can offer the same work under more than one licence. Creative Commons licence terms explicitly permit dual licensing. The condition is that you may not withdraw a CC licence from someone who already received the work while complying with its terms. The decisive exception: once a reuser has the work under a CC licence, that grant is irrevocable even if you later publish the same work under a different licence. Publish each licence notice clearly, indicating which version applies to which release, and keep records of when you first made each licence offer available.

Creative Commons 4.0 legal codes do not prevent a creator from offering the same work under more than one licence. The official FAQ confirms this directly. Release a photograph under CC BY 4.0 for general use and simultaneously sell an exclusive commercial licence to a publisher. The CC grant is non-exclusive, so you retain the right to offer the work on any other terms you choose.

The critical constraint is reversibility. A CC licence is irrevocable for the period of the licensed copyright rights. Once someone downloads your work under CC BY-NC-ND 4.0, that person may continue using it under those terms even if you later change the work's page to CC BY 4.0. You cannot recall the earlier grant. Dual licensing is a permanent decision for every copy already in circulation.

Compatibility between the two licences does not matter for the original creator. You are the licensor, not a reuser combining works. The compatibility rules that govern ShareAlike and adaptation chains apply to downstream users, not to your initial release choices. Publish the same work under CC BY-SA 4.0 and under a proprietary licence without either licence conflicting in your hands.

When you apply a Creative Commons licence, you grant the public a worldwide, royalty-free, non-exclusive, irrevocable permission for the term of the licensed copyright and similar rights. "Irrevocable" is the decisive legal term. It means that any reuser who obtained the work while the CC licence was in effect holds a valid licence that you cannot terminate unilaterally.

The 4.0 licences include an automatic termination mechanism when a reuser breaches the terms. Licensed rights also end when the relevant copyright or similar rights expire. If a reuser violates a condition, rights under the licence terminate automatically. Cure within 30 days after discovery produces automatic reinstatement. The licensor may also expressly reinstate the licence. Cure does not erase possible liability for the period of violation. This mechanism does not let you revoke a licence for a compliant reuser simply because you later decide to dual-license the work.

What This Means For Your Existing Copies

If you posted a song under CC BY 4.0 in 2023 and now want to sell it exclusively in 2026, everyone who downloaded it in 2023 retains the right to use, share, and adapt it under CC BY 4.0. You cannot force them to delete their copies or stop using the work. A later buyer cannot receive true exclusivity because earlier recipients may keep sharing the work under the CC licence for the term of the licensed rights. This is the primary trade-off of dual licensing: you gain flexibility for new releases but lose the ability to close the earlier licence for any copy already distributed.

A common failure case happens when a creator misunderstands reversibility. A photographer releases images under CC BY 2.0 in 2010. In 2020, they see a commercial use they dislike and try to replace the licence with CC BY-ND 4.0, assuming the new terms apply to everyone. They do not. Every reuser who complied with CC BY 2.0 in 2010 still holds that licence. The creator can only enforce the newer terms against people who first obtain the work after the change.

Older Licence Versions

The reach of dual licensing is also limited by the version of the licence you used. If you applied an older ported licence, such as CC BY-NC-SA 2.0 Unported, you cannot unilaterally upgrade those copies to 4.0. A reuser who received the work under the older version continues to operate under that version's terms. The 4.0 licences do not retroactively replace earlier versions for existing recipients.

Software Code: A Special Case

Compatibility becomes a problem only if you try to use a CC licence to cover software code. Creative Commons states clearly: do not use a CC licence for software code. Use a recognised free or open-source software licence suited to source code, patents, and distribution. Documentation, art, and other non-code assets may carry separate CC licences if they are clearly marked. Dual licensing a software project with a CC licence on the code itself is a misapplication that the official licence terms do not support.

Label each release clearly. If you offer the same work under CC BY 4.0 and under a paid licence, state both options on the work's download page. Include the exact licence name, version, and the official deed URL for the CC option. For the paid option, specify the terms, price, and scope of permission. A reuser who sees only one licence notice may reasonably rely on that one.

Keep records of when you first published each licence. A dispute over which licence applies to a particular download will turn on what the reuser could see at the time of download. A date-stamped page archive or a version-controlled licence file strengthens your position. Creative Commons does not register works or verify ownership, so your own records are the primary evidence.

Do not mix licence notices on the same copy. If you include both a CC BY 4.0 notice and a "All rights reserved" statement on the same file, the reuser may not know which applies. The 4.0 licence terms require you to identify the licence clearly. An ambiguous notice risks the reuser choosing the wrong one or a court interpreting the ambiguity against you.