You could modify the time of each prototype in the "property inspector" which would be on the right side in the Prototype tab. There is a field named "Duration" which is by default set to "0.3s". Once you have an interaction between the artboards, you'll see this field.
I hope this would help you.
Thank you for your reply.
But that's not the answer I want because I didn't record the question in detail. Sorry.
I'm a frontend developer. During the markup, the designer modified XD to make the markup more difficult.
I want to know the last modification time of xd.
Thank you for this information. I would like to know if the designer has shared the XD file or they have just shared a design link? If the designer has shared the XD file, then is the file shared via the cloud or by mail or any other communication channel(local document).
Thank you for the answer.
I received a design link
How do I know the last edit time of each artboard, not the update time in the upper left?
Oops! I'm afraid, there is no way to where we could find the last modified date in a design link or any link that is been shared.
However, you could use adobexd.uservoice.com, this is the best place to let us know about any new feature that you would love to have. Your contributions can help us shape the future of Adobe XD.