How do I show that a document has been superseded?
Keep the earlier sealed state intact and point to the newer state instead of replacing history.
Read answer →Universal Document answer
How can I tell whether a document was altered?
Verify the sealed state against its integrity evidence and report identity, time and authority separately.
What UD changes
Universal Document treats document state and lineage as explicit information instead of leaving them only in filenames, folders or platform history. That can make the answer inspectable after the file travels.
What it does not prove
Document integrity and provenance do not by themselves establish factual truth, legal sufficiency, identity, regulatory acceptance or organizational authorization.
Related questions
How do I amend a final document without overwriting it?
Derive a new living UDR from the prior final state and preserve the relationship between them.
Read answer →Why is PDF version control so messy?
PDF preserves appearance well but usually leaves version relationships to filenames, folders and external systems.
Read answer →