WHO SMART Trust
1.5.0 - release

WHO SMART Trust, published by WHO. This guide is not an authorized publication; it is the continuous build for version 1.5.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/WorldHealthOrganization/smart-trust/tree/v1.5.0-release-candidate and changes regularly. See the Directory of published versions

## Logical Model: HCert - XML Profile

Active as of 2026-04-27

XML representation of the HCert logical model.

Raw xml | Download

    <StructureDefinition xmlns="http://hl7.org/fhir">
      <id value="HCert"/>
      <text>
        <status value="extensions"/>
        <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: StructureDefinition HCert</b></p><table border="0" cellpadding="0" cellspacing="0" style="border: 0px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top;"><tr style="border: 1px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top"><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="The logical name of the element">Name</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Information about the use of the element">Flags</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Minimum and Maximum # of times the element can appear in the instance">Card.</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px; width: 100px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Reference to the type of the element">Type</a></th><th style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Additional information about the element">Description &amp; Constraints</a><span style="float: right"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64, " alt="doco" style="background-color: inherit"/></a></span></th></tr><tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="." style="background-color: white; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-HCert-definitions.html#HCert" title="Logical Model for the HCERT">HCert</a><a name="HCert"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">0</span><span style="opacity: 0.5">..</span><span style="opacity: 0.5">*</span></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R5/types.html#Base">Base</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Health Certificate</td></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_resource.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Resource" class="hierarchy"/> <a href="StructureDefinition-HCert-definitions.html#HCert.1" title="HCERT EU DCC">1</a><a name="HCert.1"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..1</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://smart.who.int/ddcc/1.0.1/StructureDefinition-HCertDCC.html">HCertDCC</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">HCERT EU DCC</td></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_resource.png" alt="." style="background-color: white; background-color: inherit" title="Resource" class="hierarchy"/> <a href="StructureDefinition-HCert-definitions.html#HCert.3" title="DDCC Vaccination claim (PROPOSED)">3</a><a name="HCert.3"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..*</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://smart.who.int/ddcc/1.0.1/StructureDefinition-DDCCCoreDataSetVS.html" title="http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSet">DDCCCoreDataSetVS</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Vaccination Core Data Set claim<br/></td></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_resource.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Resource" class="hierarchy"/> <a href="StructureDefinition-HCert-definitions.html#HCert.4" title="DDCC Test Result claim (PROPOSED)">4</a><a name="HCert.4"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..*</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://smart.who.int/ddcc/1.0.1/StructureDefinition-DDCCCoreDataSetTR.html" title="http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSet">DDCCCoreDataSetTR</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">Test Result Core Data Set claim<br/></td></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_primitive.png" alt="." style="background-color: white; background-color: inherit" title="Primitive Data Type" class="hierarchy"/> <a href="StructureDefinition-HCert-definitions.html#HCert.5" title="URI of a Verifiable Health Link.  Of the form 'vhlink:/eyJ1cmwiOiJodHRwczovL2Vo....' ">5</a><a name="HCert.5"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..*</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://hl7.org/fhir/R5/datatypes.html#string">string</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">VHL<br/></td></tr>
    <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck00.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_resource.png" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Resource" class="hierarchy"/> <a href="StructureDefinition-HCert-definitions.html#HCert.-6" title="Digital Vaccination Certificate (Proposed)">-6</a><a name="HCert.-6"> </a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">0..*</td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="http://smart.who.int/trust-phw/v0.1.0/StructureDefinition-DVC.html">DVC</a></td><td style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy">DVC<br/></td></tr>
    <tr><td colspan="5" class="hierarchy"><br/><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64, " alt="doco" style="background-color: inherit"/> Documentation for this format</a></td></tr></table></div>
      </text>
      <url value="http://smart.who.int/trust/StructureDefinition/HCert"/>
      <version value="1.5.0"/>
      <name value="HCert"/>
      <title value="Health Certificate"/>
      <status value="active"/>
      <date value="2026-04-27T07:07:17+00:00"/>
      <publisher value="WHO"/>
      <contact>
        <name value="WHO"/>
        <telecom>
          <system value="url"/>
          <value value="http://who.int"/>
        </telecom>
      </contact>
      <description value="Logical Model for the HCERT"/>
      <jurisdiction>
        <coding>
          <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
          <code value="001"/>
        </coding>
      </jurisdiction>
      <fhirVersion value="5.0.0"/>
      <mapping>
        <identity value="rim"/>
        <uri value="http://hl7.org/v3"/>
        <name value="RIM Mapping"/>
      </mapping>
      <kind value="logical"/>
      <abstract value="false"/>
      <type value="http://smart.who.int/trust/StructureDefinition/HCert"/>
      <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Base"/>
      <derivation value="specialization"/>
      <snapshot>
        <extension
                   url="http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version">
          <valueString value="5.0.0"/>
        </extension>
        <element id="HCert">
          <path value="HCert"/>
          <short value="Health Certificate"/>
          <definition value="Logical Model for the HCERT"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Base"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <isModifier value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="HCert.1">
          <path value="HCert.1"/>
          <short value="HCERT EU DCC"/>
          <definition value="HCERT EU DCC"/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="HCert.1"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="http://smart.who.int/ddcc/StructureDefinition/HCertDCC"/>
          </type>
        </element>
        <element id="HCert.3">
          <path value="HCert.3"/>
          <short value="Vaccination Core Data Set claim"/>
          <definition value="DDCC Vaccination claim (PROPOSED)"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="HCert.3"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code
                  value="http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSet"/>
            <profile
                     value="http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSetVS"/>
          </type>
        </element>
        <element id="HCert.4">
          <path value="HCert.4"/>
          <short value="Test Result Core Data Set claim"/>
          <definition value="DDCC Test Result claim (PROPOSED)"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="HCert.4"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code
                  value="http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSet"/>
            <profile
                     value="http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSetTR"/>
          </type>
        </element>
        <element id="HCert.5">
          <path value="HCert.5"/>
          <short value="VHL"/>
          <definition
                      value="URI of a Verifiable Health Link.  Of the form 'vhlink:/eyJ1cmwiOiJodHRwczovL2Vo....'"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="HCert.5"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="string"/>
          </type>
        </element>
        <element id="HCert.-6">
          <path value="HCert.-6"/>
          <short value="DVC"/>
          <definition value="Digital Vaccination Certificate (Proposed)"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="HCert.-6"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="http://smart.who.int/trust-phw/StructureDefinition/DVC"/>
          </type>
        </element>
      </snapshot>
      <differential>
        <element id="HCert">
          <path value="HCert"/>
          <short value="Health Certificate"/>
          <definition value="Logical Model for the HCERT"/>
        </element>
        <element id="HCert.1">
          <path value="HCert.1"/>
          <short value="HCERT EU DCC"/>
          <definition value="HCERT EU DCC"/>
          <min value="0"/>
          <max value="1"/>
          <type>
            <code value="http://smart.who.int/ddcc/StructureDefinition/HCertDCC"/>
          </type>
        </element>
        <element id="HCert.3">
          <path value="HCert.3"/>
          <short value="Vaccination Core Data Set claim"/>
          <definition value="DDCC Vaccination claim (PROPOSED)"/>
          <min value="0"/>
          <max value="*"/>
          <type>
            <code
                  value="http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSet"/>
            <profile
                     value="http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSetVS"/>
          </type>
        </element>
        <element id="HCert.4">
          <path value="HCert.4"/>
          <short value="Test Result Core Data Set claim"/>
          <definition value="DDCC Test Result claim (PROPOSED)"/>
          <min value="0"/>
          <max value="*"/>
          <type>
            <code
                  value="http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSet"/>
            <profile
                     value="http://smart.who.int/ddcc/StructureDefinition/DDCCCoreDataSetTR"/>
          </type>
        </element>
        <element id="HCert.5">
          <path value="HCert.5"/>
          <short value="VHL"/>
          <definition
                      value="URI of a Verifiable Health Link.  Of the form 'vhlink:/eyJ1cmwiOiJodHRwczovL2Vo....' "/>
          <min value="0"/>
          <max value="*"/>
          <type>
            <code value="string"/>
          </type>
        </element>
        <element id="HCert.-6">
          <path value="HCert.-6"/>
          <short value="DVC"/>
          <definition value="Digital Vaccination Certificate (Proposed)"/>
          <min value="0"/>
          <max value="*"/>
          <type>
            <code value="http://smart.who.int/trust-phw/StructureDefinition/DVC"/>
          </type>
        </element>
      </differential>
    </StructureDefinition>