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45 votes
Accepted

Relicensing content under CC-BY-SA

I don't think so, no. CC-BY-SA 3.0 allows in s4 that You may Distribute or Publicly Perform the Work only under the terms of this License ... This Section ... applies to the Work as incorporated ...
MadHatter's user avatar
  • 49.5k
29 votes
Accepted

Changing my own non-software project from GPLv3 to CC BY-SA

You have accepted two other small commits to this project, but apart from those you are the sole rightsholder in your work. Moreover, although IANAL/IANYL, because the two commits simply correct the ...
MadHatter's user avatar
  • 49.5k
23 votes
Accepted

Do the CC licenses prevent insults?

The Creative Commons licenses do not restrict field or purpose of use. Local laws about defamation, etc., may do so, depending on the nature of the downstream use. For example, if someone edits a CC-...
apsillers's user avatar
  • 36.2k
21 votes
Accepted

Can I "upgrade" the version of CC BY-SA from 3.0 to 4.0 in my modification?

The CC-BY-SA 3.0 license is “forward compatible” with later versions. In section 4(b): You may Distribute or Publicly Perform an Adaptation only under the terms of: (i) this License; (ii) a ...
amon's user avatar
  • 39k
14 votes

Do Stack Exchange’s ToS mean that the user-generated content is double-licensed to them?

Does this sentence just summarize what the consequences are of licensing (to SE) my content under CC BY-SA 3.0? Or does this sentence state that I’m licensing (to SE) my content under a ...
RubberDuck's user avatar
  • 5,456
13 votes
Accepted

Can derivatives of CC BY-SA works be licensed under CC BY-NC-SA?

No, it’s not allowed. It says on the license summary page: No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the ...
unor's user avatar
  • 5,670
13 votes

Will adding a BY-SA image to a blog post make the entire post BY-SA?

The CC ShareAlike terms merely say that whenever you do make a derivative work of the image, distribution of that derivative work must be under ShareAlike (or CC-approved ShareAlike-compatible) terms. ...
apsillers's user avatar
  • 36.2k
13 votes

Does every adaptation of a CC BY-SA work violate its terms?

The usual disclaimer: I'm not a lawyer and this is not personalized legal advice. Am I reading too much into the license, or am I somehow misunderstanding copyright law and how it works with Creative ...
David Z's user avatar
  • 355
12 votes

Stack Exchange's CC-BY-SA and Patents

The simple answer to your question is "no, there's nothing you can do about it". But then the same applies to any MIT or BSD licensed code you use in your projects so the additional risk you'...
Philip Kendall's user avatar
11 votes
Accepted

Clarifying "Share Alike" in CC licenses

Your analysis would hold if the licence on the map was CC BY. For CC BY-SA, a little more is required. The licence requires that you retain the following if it is supplied by the Licensor with the ...
MadHatter's user avatar
  • 49.5k
11 votes
Accepted

Does the Creative Commons CC BY-SA 4.0 license make it mandatory to share derived work?

That summary is indeed ambiguous. CC BY-SA (and copyleft Open Source licenses in general) do not force you to share your work. Instead: If you share your work, then you can only do so under the same (...
amon's user avatar
  • 39k
10 votes

Can I post code examples with GPL software on Stack Overflow?

Yes, you can as it is your code only (and so you can license it to SE as you like). The fact that source code contains text import g, does not make said source code derived work (as it doesn't contain ...
Matija Nalis's user avatar
10 votes
Accepted

Is HTML-linked content still subject to the CC-BY-SA license?

No. HTML linking does not create a derivative work, so it is irrelevant what license the Stack Overflow post is under, it cannot possibly affect the license of the linked content. (Otherwise you could ...
Philip Kendall's user avatar
9 votes

Can I "upgrade" the version of CC BY-SA from 3.0 to 4.0 in my modification?

IANAL but according to the Creative Commons Foundation although the CC-BY-SA 3.0 license allows you to license your new contributions under a CC-BY-SA 4.0 license it doesn't allow you to "upgrade&...
Trevor's user avatar
  • 349
9 votes

Do the CC licenses prevent insults?

CC licenses cover copyright and related rights, but do not affect other permissions or restrictions. For example, personality rights might still apply – but that is extremely jurisdiction-dependent, ...
amon's user avatar
  • 39k
9 votes
Accepted

How to provide credit when modifying a design with a CC BY-SA license?

Creative Commons licenses are copyright-based licenses, but copyright doesn't really apply in a hardware context. So, while there might be a copyright in the schematics, and all copies or ...
amon's user avatar
  • 39k
8 votes

Does Stack Exchange disallow me to use posted contents in an Apache 2.0 licensed project?

In brief, item #1 is incorrect, and item #2 is broadly correct, with possible exceptions. You may release a copyrighted work under any number of licenses independently and simultaneously. The fact ...
apsillers's user avatar
  • 36.2k
8 votes
Accepted

Can I post code examples with GPL software on Stack Overflow?

No, but maybe. You have correctly noted that this is a problem. You cannot paste GPL'ed code to Stack Overflow. But there are two exceptions, which depend on the copyright laws in your local ...
amon's user avatar
  • 39k
8 votes
Accepted

Can a YouTube video use images licensed under Creative Commons Share Alike (CC BY SA) and not be an adaptation?

You want to reuse a CC BY-SA image in a video presentation. You don't say which version of CC BY-SA is applicable. v3 includes language that is explicit about your use case: "Adaptation" ...
MadHatter's user avatar
  • 49.5k
8 votes
Accepted

Company policy says no code under license requiring sharing source can be used. Stack Overflow is CC-BY-SA. Does this mean we can't use SO at work?

You are broadly correct that if your program includes CC BY-SA code from someone else, you must license the entire program under CC BY-SA. Note that this doesn't actually force source disclosure -- ...
apsillers's user avatar
  • 36.2k
8 votes
Accepted

CC-By-SA: Can the author update his past creation when updating his name?

Kind of. If we look into the terms of the CC BY-SA 4.0, we see the Section 3(a)(1)(A) requirement to “retain” the Licensor's “identification”, “including by pseudonym if designated”. So you should ...
amon's user avatar
  • 39k
7 votes

learning from GPL infects code

In copyright law, expression is copyrightable, and ideas are not copyrightable. In particular, expression is copyrightable only insofar as that expression is distinct from the idea is expresses. This ...
apsillers's user avatar
  • 36.2k
7 votes

Can I use source code licensed under CC-BY-SA for commercial closed source project?

You can include CC-BY-SA source code in proprietary software iff you do not publish that software. The CC-BY-SA requirements only apply once you Share[1] the adapted work. For example, this would ...
amon's user avatar
  • 39k
7 votes

Creative Commons license CC BY-SA doesn't work for commercial content?

No, the share-alike terms mean that if you create a derivative work of the CC-BY-SA licensed work, you can only publish it under the same license. But including a CC-BY-SA licensed work into a larger ...
amon's user avatar
  • 39k
7 votes

In which cases must I relicense my product under the CC BY-SA license?

That is a lot of questions for one post, and you don't say what jurisdiction you're in. Nevertheless, and noting that IANAL/IANYL, I'll try to answer at least some of them. My principal authority is ...
MadHatter's user avatar
  • 49.5k
7 votes
Accepted

Does CC BY-SA affect recordings of performances of songs?

united-kingdom Whilst I greatly respect my colleague Philip Kendall, in this case I disagree with him. There are several sets of rights to be considered, here. There is the copyright in the original ...
MadHatter's user avatar
  • 49.5k
7 votes
Accepted

Can I change the content license on my Stackoverflow/Stackexchange posts to something more permissive like MIT?

As Phillip Kendall mentioned, you can release your content under multiple licenses, as long as one of those licenses is the Creative Commons Attribution-ShareAlike license. The best place to state ...
The-Coder-Who-Knew-Too-Little's user avatar
6 votes
Accepted

Protection from 'this version or later' in CC BY-SA

Your interpretation is correct, you are relying on the license steward (in this case Creative Commons) to continue to act in good faith and according to their vision and mission. You cannot add ...
lofidevops's user avatar
  • 1,990
6 votes
Accepted

How could I copyleft a document that contains a substantial amount of both code and prose?

Stick with CC-BY-SA 4 and get the best of both worlds. CC-BY-SA 4.0 s3b requires that: In addition to the conditions in Section 3(a), if You Share Adapted Material You produce, the following ...
MadHatter's user avatar
  • 49.5k
6 votes
Accepted

Using CC-BY-SA images in a CC-BY-NC-SA document

This takes us on another visit to Drauglis v. Kappa Map Group, that being some of the only guiding jurisprudence we have on the question of derivative works and CC licences. Note that is not a ...
MadHatter's user avatar
  • 49.5k

Only top scored, non community-wiki answers of a minimum length are eligible