CC BY 4.0 License Overview | Generated by AI
This is the Creative Commons Attribution 4.0 International (CC BY 4.0) license.
It’s the most permissive of the main CC licenses. It lets anyone share and adapt your work — including commercially — as long as they give appropriate credit, link to the license, and indicate if changes were made. That single attribution condition is the only restriction.
Quick breakdown of what it permits and requires:
- Share — copy and redistribute in any format
- Adapt — remix, transform, build upon the material, for any purpose including commercial
- Attribution required — credit the creator, link the license, note changes
- No additional restrictions — you can’t apply legal/technical terms that legally restrict others from doing what the license allows
Relevant context for you: this is a common license for content and documentation (your notes-en knowledge base, for instance, could use it). It’s not typically used for code — for code you’d reach for MIT, Apache 2.0, or GPL. CC BY is for prose, images, datasets, papers. The Anthropic docs, many academic preprints (arXiv often offers it), and Wikipedia-adjacent content use CC BY variants.
The “4.0” is the current version (2013), international by default — earlier versions were jurisdiction-ported, 4.0 dropped that. The “by” in the URL path is the machine-readable signal for the Attribution-only flavor, distinct from siblings like by-sa (ShareAlike), by-nc (NonCommercial), by-nd (NoDerivatives).
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