Persistence.html 10.7 KB
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               <h1 class="title">W3C URI Persistence Policy</h1>
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                     <p>When information is made available on the Web, it is important for the
integrity of the Web, and the society based upon it, that the URIs used to
reference information be used well into the future, and that the information
persist as identified.</p>

                     <p>To this end, the World Wide Web Consortium hosts (MIT, ERCIM and Keio
University) make the following pledge: that as far as they are able, for
resources on the www.w3.org Web site which are declared (see below) to be
persistent.</p>
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<h2>Pledge</h2>

                     <ul class="show_items"><li>The hosts will ensure that persistent resources continue to be
    available throughout the life of the Consortium;</li><li>Where a persistent resource is modified, a change history will be
    archived though the archive will <em>not</em> necessarily be available
    publicly;</li><li>Should the W3C be disbanded, then any Web site will be granted the
    right to make a copy (at a different URI) of all public persistent
    resources so long as they are not modified and are preserved in their
    entirety and made available free of charge, and provided the same
    persistence policy is applied to these "historical mirrors." In such
    event, the original http://www.w3.org web site will be handed over for
    management to another organization only if that organization pledges to
    this policy or one considered more persistent.</li></ul>

                     <p>As of this note, persistent resources include:</p>
                     <ul class="show_items"><li>The home page "http://www.w3.org/";</li><li>Those which start "http://www.w3.org/" immediately followed by four
    decimal digits;</li><li>Those which start "http://www.w3.org/TR/" immediately followed by four
    decimal digits;</li><li>Those which start with "http://www.w3.org/ns/".</li></ul>

                     <p>No representation is made about the persistence policies for any other
information on the site.</p>

                     <p>The intent is to set an example by reducing the failure of links due to
clumsy management or inadequate commitment to information persistence, and to
provide a stable reference base of information about W3C-related topics as a
service to the community.</p>

                     <p>Tim Berners-Lee</p>

                     <p>W3C Director, 1999/@@@draft</p>

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