The source version controls
A work remains under the version named by its licensor. Do not silently rewrite an older license notice as 4.0, because the legal text, international structure, and treatment of some rights differ.
Why 4.0 is widely used
The 4.0 suite was drafted for international use and expressly addresses areas such as sui generis database rights and flexible attribution practices. It also permits private creation of ND adaptations while still restricting their sharing.
Record ports and jurisdiction details
Older licenses may be ported to a particular jurisdiction or unported. Copy the full license name and URL from the source so future users can identify the correct legal code.
Put it into practice
Check your planned use
Select the exact license and use case to open a permanent result page.
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