Yes — when uploading, expand the "Official Document" section and fill:

• Document number (e.g., "ที่ ก ๐๒๐๒/ว ๑๒๓")
• Document date
• Issuing authority/agency

Government docs get special viewer: no ads, SHA256 hash for integrity, compliance badge per Computer-Related Crime Act and PDPA B.E. 2562.