Checksum is calculated using SHA512 and can be used to verify a downloaded attachment. A canonicalization of the XML document must be done before checksum calculation.
Canonicalization
http://www.w3.org/TR/2001/REC-xml-c14n-20010315
Type
http://www.w3.org/2001/04/xmlenc#sha512
Attachment name:
Príloha č. 1 k ZÚ obce Slovenská Ľupča za rok 2019.pdf