<?xml version="1.0" encoding="UTF-8"?>
<tsduck>
  <_descriptors>

    <CA_contract_info_descriptor
        CA_system_id="uint16, required"
        CA_unit_id="uint4, required"
        fee_name="string, optional">
      <!-- One per component -->
      <component tag="uint8, required"/>
      <contract_verification_info>
        Hexadecimal content
      </contract_verification_info>
    </CA_contract_info_descriptor>

  </_descriptors>
</tsduck>
