Quote from: marlboroza on October 20, 2018, 02:30:49 PM

How many minutes before it become visible that post was edited:

5 minutes.

Quote from: marlboroza on October 20, 2018, 02:30:49 PM

For example, if 2 posts are posted back to back in very short time and someone edit first post using content of second post(blatant copy/paste) how will anyone prove first post was plagiarism and second post is good?

I don't think you can prove it. IIRC, theymos (or an admin/mod) said that the "edit history" only shows up after the 5 minutes, so they can't see what was the post if the user edits it before that time.

Source:

Quote from: theymos on July 15, 2012, 06:17:04 PM

Edits aren't recorded when they occur within 5 minutes of the post time. (This has always been the case.)