Adding RSL to Media Files ​

RSL licenses can be embedded directly in the metadata headers of media and data files, such as images, videos, eBooks, and structured datasets.

By embedding an RSL license in a file, content owners can define licensing and usage terms for applications that want to license the digital asset. If the embedded RSL license is managed by an RSL license server, the <content> element must reference a canonical URL that uniquely identifies the file.

Example Code: Embedding an RSL License in an EPUB File ​

RSL licenses can be embedded in an EPUB by declaring the RSL namespace in the OPF <package> and including the license in <metadata>.

xml
<package version="3.0"
         xmlns="http://www.idpf.org/2007/opf"
         xmlns:dc="http://purl.org/dc/elements/1.1/"
         xmlns:rsl="https://rslstandard.org/rsl"
         unique-identifier="BookID">

  <metadata>
    <dc:title>Scaling People: Tactics for Management and Company Building</dc:title>
    <dc:creator>Claire Hughes Johnson</dc:creator>

    <rsl:rsl>
      <rsl:content url="https://press.stripe.com/scaling-people.enc" 
                   server="https://api.rslcollective.org">
        <rsl:license>
          <rsl:permits type="usage">ai-train</rsl:permits>
          <rsl:payment type="inference">
            <rsl:standard>https://rslcollective.org/license</rsl:standard>
          </rsl:payment>
        </rsl:license>
      </rsl:content>
    </rsl:rsl>

  </metadata>
</package>

Example Code: Embedding an RSL License in an Image File ​

RSL licenses can be embedded in the XMP metadata of most image formats (e.g., JPEG, PNG, TIFF, WebP) by declaring the RSL namespace in the <rdf:RDF> element of the XMP header and including the license in the <rdf:Description> block.

xml
<x:xmpmeta xmlns:x="adobe:ns:meta/">
  <rdf:RDF
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:rsl="https://rslstandard.org/rsl">

  <rdf:Description rdf:about="">
    <rsl:rsl>
    <rdf:Description>
      <rdf:value rdf:parseType="Resource">
      <rsl:content>
        <rdf:Description>
        <rdf:value rdf:parseType="Resource" 
                   rsl:server="https://api.rslcollective.org" 
                   rsl:url="https://rslstandard.org/logo.png">
          <rsl:license>
          <rdf:Description>
            <rdf:value rdf:parseType="Resource" rsl:permits="ai-train">
            <rsl:payment>
              <rdf:Description>
              <rdf:value rdf:parseType="Resource" rsl:type="inference" 
                         rsl:standard="https://rslcollective.org/license"/>
              <rdf:type rdf:resource="https://rslstandard.org/rsl#payment"/>
              </rdf:Description>
            </rsl:payment>
            </rdf:value>
            <rdf:type rdf:resource="https://rslstandard.org/rsl#license"/>
          </rdf:Description>
          </rsl:license>
        </rdf:value>
        <rdf:type rdf:resource="https://rslstandard.org/rsl#content"/>
        </rdf:Description>
      </rsl:content>
      </rdf:value>
      <rdf:type rdf:resource="https://rslstandard.org/rsl#rsl"/>
    </rdf:Description>
    </rsl:rsl>
  </rdf:Description>

   </rdf:RDF>
</x:xmpmeta>

Thanks to Mike Bremford for the XMP example.