Integrating CC Licensing with Applications

Building the Commons: Integrating CC in Your Application

Nathan Yergler, CTO [email_address] Jon Phillips BizDev + Community Developer [email_address]

Audience Assumptions

Software Developers

70/30 Web/Desktop

Developing Content Creation or Reuse Applications

What does Integration look like?

Flickr

Internet Archive

CC Publisher

What is “Integration” ?

Applying Licenses to Content

Publishing Metadata

Content/Metadata Consumption

Applying Licenses to Content

Selecting a License
Partner Interface
Simple Chooser
cc.js
Web Services

Partner Interface
Pop-up or iframe for web applications
Utilizes the same license selection rules as creativecommons.org/license
Returns a license URL, name to your application via HTTP GET

Partner Interface example.com/app Partner Interface example.com/app/exit

cc.js
Javascript “widget” for web applications
Currently in development
Simplified, straight-forward integration
Localized by CC partners

cc.js
<script src="http://api.creativecommons.org/jswidget/tags/0.1/complete.js? locale=en_US">
</script>

The Simple Chooser
Drop-down license selector
Optionally exclude licenses by attribute code
ie, ?exclude=nd
<script type="text/javascript" src="http://api.creativecommons.org/rest/dev/simple/chooser.js" >
</script>

The Simple Chooser

Web Services
Provide access to the full licensing dataset
Localized “questions” for implementing your own version of cc.org/license
HTTP interface; take as little or as much as you need
But... requires more work to use.
http://api.creativecommons.org/docs

CC Publisher

Publishing Metadata

Metadata
Discovery is at least as important as licensing
Publishing metadata for works enables discovery (among other things)
Google, Yahoo both index basic CC metadata

CC Metadata
Copy-and-paste was important
Semantic web seemed the way to go

RDF/XML in an HTML Comment
so, so ugly
hidden to humans
hidden to parsers
easy to screw up
overly verbose

Microformats
rel="license" since 2004
Colocated with human visible markup
Concise
Problems:
Page level; what about audio, images, video, etc?
Scalability and interoperability of microformats

rel=”license” microformat
This work is licensed under Creative Commons <a rel="license" href="http://creativecommons.org/licenses/by/2.5/">Attribution</a>

Wanted:
Metadata solution:
...for any page, fragment, link, embedded object
Colocated with human visible markup
Publisher and consumer friendly
Flexible, interoperable

RDFa
RDF
a stands for attributes
The mythical RDF-in-HTML is finally here

30 seconds of RDF
Triples:
Subject: always a URI
Predicate (verb): always a URI
Object: URI or literal (text)
One can say lots of things with these primitives.
And do things with what is said.

30 seconds of RDFa
Subject denoted by about attribute (defaults to current document).
Predicate denoted by rel (or rev ) if the object is a URI.
Predicate denoted by property if the object is a literal.
See http://rdfa.info

CC Metadata Today
Publishing RDFa from the license chooser
Web services return RDFa
Looking for implementations:
audio, video, image sharing on the web that publishes RDFa
RDFa aware search

Commerce, and then some
Metadata “hooks”
cc:morePermissions
cc:attributionURL
cc:attributionName

Content/Metadata Consumption

Syndication / Aggregation
Specs exist for asserting licenses for RSS, RSS 2, Atom
Aggregators could easily display hints to users about content licenses

Metadata Browsing
Expose embedded metadata to users in a non-intrusive way
MozCC for CC metadata
Operator for microformats

Flickr + Think Free
Flickr exposes license metadata through their API
Think Free office reuses content based on this metadata
Content creators gain greater exposure

Coming Soon...

liblicense
C library
Allows querying of license metadata
Provides pluggable architecture for embedding/reading licenses from files
Builds on XMP work for embedded metadata
Allows us to build license selection UI in a straightforward manner

GTK+ widget

Nautilus Integration

Thanks!
http://wiki.creativecommons.org/Integration
http://wiki.creativecommons.org/Developer

Integrating CC Licensing with Applications

by Nathan Yergler on Jul 25, 2007

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