Source: http://www.wiwiss.fu-berlin.de/suhl/bizer/TriQLP/swp/SWP2-AssertWithSignature-Example.trig

@prefix swp:     <http://www.w3.org/2004/03/trix/swp-2/> .
@prefix ex:     <http://example.org/#> .
@prefix :        <#> .

<http://example.org/graph1> {
    ex:foo ex:bar ex:baz .
}

<http://example.org/graph2> {
    ex:bar ex:baz ex:foo .
}

<urn:uuid:ae526780-7f44-11d9-9bd3-00112ff60c7f> {
    <http://example.org/graph2>
          swp:assertedBy <urn:uuid:ae526780-7f44-11d9-9bd3-00112ff60c7f> ;
          swp:digest "NmM2NWRkNDVkZmFkY2Y5ZGZmZTc3M2Y3YjY0NmZmOGY3NzI5Njg0Ng=="^^<http://www.w3.org/2001/XMLSchema#base64Binary> ;
          swp:digestMethod swp:JjcRdfC14N-sha1 .

    <http://example.org/graph1>
          swp:assertedBy <urn:uuid:ae526780-7f44-11d9-9bd3-00112ff60c7f> ;
          swp:digest "YjRhNzIyZWJmZDFmMmQwZjUyOTNjZTU4ZDFiMTY3MmQxMTNlN2NiNQ=="^^<http://www.w3.org/2001/XMLSchema#base64Binary> ;
          swp:digestMethod swp:JjcRdfC14N-sha1 .

    <urn:uuid:ae526780-7f44-11d9-9bd3-00112ff60c7f>
          swp:assertedBy <urn:uuid:ae526780-7f44-11d9-9bd3-00112ff60c7f> ;
          swp:authority  <http://grid.cx/rowland> ;

          swp:signatureMethod swp:JjcRdfC14N-rsa-sha1;                      
          swp:signature """E2aylVAB2lt1Ujf3ucZpUYDcEWBCtgaoddds0Kgu4hNwWH3R7GbLo+zrBnzKlj2TVZO3OtUSXHFz
SttJbvdUj2SQlMdryRHjEGHbhtchZ6V9KI49EmNOF57dixZCOWp3yoVlhSyPv0+46b8saOYUu8On
dcmeBeUaZKRyWH7JMxE=
"""^^<http://www.w3.org/2001/XMLSchema#base64Binary> ;

          swp:validFrom "Mon Jun 07 23:02:33 CEST 2004"^^<http://www.w3.org/2001/XMLSchema#dateTime> ;
          swp:validUntil "Tue Jun 07 23:02:33 CEST 2005"^^<http://www.w3.org/2001/XMLSchema#dateTime> .
}