[cc-licenses] Time limited CC licenses for version 4.0 ?

Greg London email at greglondon.com
Thu Dec 22 08:37:58 EST 2011

I dont see it being any more complex than adding an EXP option to the  
alphabet soup followed by a year and having that mean that January 1 of that  
year the work becomes public domain. Or maybe CC-BY because CC doesnt have a  
public domain license so explaining it requires more work. If the work  
becomes CC-BY on January 1 of the expiring year, expiration should be fairly  
easy to codify and everyone already knows what CC-BY means.

And you dont need anyone to register and track CC-NC-ND commitments. It is  
attached to the work via its license. If ANYONE  gets a copy of the work and  
it says CC-EXP2020, then they are free to treat the work as CC-BY starting  
the year 2020.

I dont know if Project Guttenberg offers cc-by works, but them or a site  
like them would simply need to keep a copy of the work around containing its  
original licence containing the EXP option, and when it expires it is CC-BY.

Greg London

Connected by DROID on Verizon Wireless

-----Original message-----
From: Kat Walsh <kat at mindspillage.org>
To: Development of Creative Commons licenses <cc-licenses at lists.ibiblio.org>
Sent: Thu, Dec 22, 2011 01:10:01 GMT+00:00
Subject: Re: [cc-licenses] Time limited CC licenses for version 4.0?

On Wed, Dec 21, 2011 at 7:28 PM, Mike Linksvayer <ml at creativecommons.org>  

> Many entities are in a position to make a credible commitment to more
> permissions at some date without such feature being built into CC NC
> licenses. I don't know any such practice. Is there?

I don't know of any offhand, but it does seem like a more promising
way of handling the issue than building new incompatible licenses to
accommodate the desire. (I do like limited-time copyright, but agree
with Mike's sentiments that the additional complexity of baking it
into the license is probably not worth it.)

It would be interesting for some organization that will credibly be
around for some time to maintain a site that registers and tracks such


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