Archived screenshot of a web page

Is there a way to prove that a website has not been edited in many years? I am going thru a divorce and the court is asking for proof that my website has not been edited for many years. It proves that I owned assets and the business before I was married. My attorney claims they cannot accept the evidence without proving the date it was uploaded and has remained unedited. Any help will be appreciated. Website is www.w194.com thanks Mark

 

How do is these graphs interpreted? Thanks for your help.

 

I owe you thanks.