Developed by the OCLC Innovation Lab, the WorldCat Live! API provides a real-time stream of newly added records of library collections and published materials to WorldCat. It is freely available under the Open Data Commons Attribution License.

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This month’s Trend Briefing explores why—thanks to a whole new breed of newer, faster, eco-friendlier, more transparent and responsive brands—consumers are now attracted to unproven and unknown brands without heritage and history. Witness the success of brands such as Wewi, 2go, Snapchat, SmartThings and more—and learn how any brand can adopt the characteristics behind their success.

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MOOCs and Libraries event videos now available

The “MOOCs and Libraries: Massive Opportunity or Overwhelming Challenge?” event took place 18–19 March at the University of Pennsylvania and was broadcast live online. Hosted by OCLC Research and University of Pennsylvania Libraries, the event featured thoughtful and provocative presentations about how libraries are already getting involved with MOOCs, and engaged attendees in discussions about strategic opportunities and challenges going forward. More than 500 people participated in this event: 125 attended in person and more than 400 attended remotely online.

Links to the 11 individual videos and a MOOCs and Libraries video playlist that comprises all of these videos are available on the MOOCs and Libraries event page and on the OCLC Research YouTube Channel. Links to the presenters’ slides, the next steps document and the #mooclib archived tweets from this event also are available on the MOOCs and Libraries event page. Look to the OCLC Research blog, HangingTogether, for a short series of postings that recap presentation highlights and summarize outcomes from this event.

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Expansion of the OCLC Control Number: test records now available

WorldCat continues to grow! OCLC Control Numbers are assigned to WorldCat bibliographic records, including Institution Records. As previously announced, the OCLC Control Number is anticipated to reach 1 billion sometime after July 1, 2013. At that point, OCLC will increase the length of the OCLC Control Number to accommodate a variable-length number string. If you use and/or store OCLC MARC bibliographic records and the OCLC Control Number, you will notice a change when the OCLC Control Number 1 billion is reached. Sample files are now available for use in testing your systems.

Go to OCLC Control Number expansion website »


OCLC member libraries around the world:

Musicians Institute
Hollywood, California, USA
OCLC symbol: MUSIC

Assumption Pathway School
OCLC symbol: SIAPS

Universidad del Valle de México Texcoco
Mexico City, Mexico
OCLC symbol: MXUVB

Universidad del Valle de México Chapultepec
Mexico City, Mexico
OCLC symbol: MXUVC

Staatliche Akademie der Bildenden Künste Karlsruhe
Karlsruhe, Germany
OCLC symbol: DEABK

Royal New Zealand Foundation of the Blind
Auckland, New Zealand
OCLC symbol: NZAFB

Membership reports

Membership values

Membership protocols



Number of records


Number of holdings


Numbers are updated weekly and reflect only records contributed by libraries. Article-level metadata is not included.


WorldCat is the world’s most comprehensive database of library materials. Updated at a rate of nearly one new record every second, WorldCat contains bibliographic records and holdings contributed by more than 11,000 libraries around the world. Learn more » is a Web portal to the global WorldCat catalog with a supporting program of data syndication that makes your library's collection discoverable virtually anywhere on the Web, including major search engines such as Google and Yahoo!. Learn more »