Can someone read a UD without installing an app?
A BrowserCarrier can open in a normal browser; raw UDR and UDS files can also use the free reader.
Read answer →Universal Document answer
Can document integrity be checked offline?
Where the required evidence is packaged locally, integrity can be checked without calling a hosted platform.
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 migrate thousands of PDFs safely?
Inventory, sample, preserve originals, convert in stages, surface exceptions and reconcile each source.
Read answer →How do I know which document is current?
Model supersession and current-state relationships explicitly rather than relying on filename recency.
Read answer →