CCWA : FAQ for Website Owners

What is Ivy Plus Libraries?

Ivy Plus Libraries is a partnership between thirteen leading academic research libraries ― Brown University, the University of Chicago, Columbia University, Cornell University, Dartmouth College, Duke University, Harvard University, Johns Hopkins University, the Massachusetts Institute of Technology, the University of Pennsylvania, Princeton University, Stanford University and Yale University ― that collectively provide access to a rich and unique record of human thought and creativity through resource sharing and collaboration. The Ivy Plus Web Collecting Program is a collaborative collection development effort to build curated thematic collections of freely available, but at-risk, web content in order to support research at participating Libraries and beyond. 

What is the purpose of the Contemporary Composers Web Archive (CCWA)?

The goal of the CCWA is to preserve copies of present and future manifestations of the websites of notable contemporary composers in a secure digital archive to guarantee the continuing availability of these extremely important but potentially ephemeral resources for researchers and scholars seeking to study the careers of contemporary composers.

Why was my website selected by Ivy Plus Libraries for CCWA?

The music librarians from individual Ivy Plus libraries institutions regularly acquire scores and other musical works from contemporary composers for their institutions' library collections; a list of all the included composers is then shared with the Web Collecting Program, which then identifies the official websites of these composers and/or their publishers. 

What is web archiving?

Web archiving is the process of creating and storing copies (or snapshots) of live websites to ensure that they are preserved and remain publicly accessible for future use. Sites are typically captured using automated web crawlers, which systematically identify and follow hyperlinks on selected websites (referred to as seeds), copying and storing information as they work. Ivy Plus Libraries uses the Archive-It service to crawl websites: its crawler is called archive.org_bot.

Will the web crawler interrupt access to my website?

No, it shouldn’t. Ivy Plus Libraries crawls websites at a polite rate so as not to interfere with access to your site. Crawls are typically run semi-annually, operate in the background, and last for at most a few days. Once a crawl is complete, the crawler no longer interacts with your site. 

What is your copyright policy?

Ivy Plus Libraries attempts to notify all organizations and/or website owners before crawling selected sites. Some websites may contain material that is produced by other parties who may claim copyright ownership of such materials. Third-party copyright holders who believe their rights have been infringed upon may contact us at

What if I do not want my website to be included in the CCWA?

We will honor requests to remove access to archived content. Please contact us at

Where can I access the archived versions of my website?

All websites collected in the CCWA can be freely and permanently accessed via Archive-It.

Why do the archived versions of my website look different than my live website?

Though Ivy Plus Libraries attempts to create complete copies of each website we collect, web crawlers can struggle to capture portions of the dynamic web. Examples of challenging or impossible-to-capture content include: JavaScript-driven navigation menus, streaming audio and video, and database-driven content. In addition, web crawlers cannot collect password-protected portions of your site: only publicly available content will be crawled. Site owners interested in optimizing their site design to allow full archiving may be interested in these Guidelines for Preservable Websites.