EDOC is a document file format popular in Latvia. EDOC files can contain other documents, for example, DOCX or PDF. The main purpose of EDOC format is to protect and verify stored files using digital certificates.

EDOC metadata contains full information about the creator of given file and a various timestamps. Digital certificates can by added to EDOC files suing a special LVRTC card or eID digital identity card issued by OCMA. The certified file cannot be modified.