Yes, that is right. I believe the reason for some of the data being under a less liberal license is to taint the live data feed that contains both the core CC0 data and the Supplementary data.
MusicBrainz customers (such as BBC) then pay money to Musicbrainz to get data updates every hour, which can be used for commercial purposes.
nick.
-----Original Message----- From: Barry Norton barry.norton@ontotext.com Reply-To: "Discussion list for the Wikidata project." wikidata-l@lists.wikimedia.org Date: Tuesday, 18 June 2013 13:01 To: "wikidata-l@lists.wikimedia.org" wikidata-l@lists.wikimedia.org, "denny.vrandecic@wikimedia.de" denny.vrandecic@wikimedia.de Subject: Re: [Wikidata-l] Linking WikiData to Freebase
Nick, thanks for pointing that out - this had completely slipped out of my mind, including in a conversation with Denny about Wikidata.
I believe the reason for the 'non-commercial' open license where MusicBrainz add value is that they need to make revenue to support their activities... including from the good folks at the BBC.
Barry
On 18/06/13 12:58, Federico Leva (Nemo) wrote:
Nicholas Humfrey, 18/06/2013 12:57:
On 18/06/2013 09:57, "Federico Leva (Nemo)" nemowiki@gmail.com wrote:
Barry Norton, 18/06/2013 00:08:
One can't license something for which one does/can not have the copyright.
Are you saying they have no way to use CC-0? For past or even future content? If both, can't they use PDM? If not, how can they say it's PD?
MusicBrainz changed the license of their core data (everything that matters) to CC0 a little while ago: https://musicbrainz.org/doc/About/Data_License
Nice, I see there's even a definition of "The core data of the database". :) It's still unclear to me why the use an unfree license for the rest.
Nemo
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