I read the entire sefer and I can tell you first hand that the sefer doesn't prove that the Rebbe is Moshiach at all , all it "proves" is that Moshiach can come from someone who is no longer alive but it still cannot prove that the Rebbe was or will be Moshiach. According to this sefer Moshiach can be anyone who died in the last 3,500 years.
This Following Content Was Published at
https://collive.com/halachic-book-proves-moshiach-can-be-from-the-dead/
A well-researched sefer by Rabbi Aharon Yaakov Lieberman proves Moshiach can be from among those who passed away and received haskamos from Chabad scholars and 2 Litvish ones. Download it in honor of Moshiach's Seuda on Acharon Shel Pesach.
When Rabbi Aharon Yaakov Lieberman finally received the haskamah for the sefer he was waiting for and let the world know via social media last summer, he was hardly expecting what would happen next.
People were sharing the news across the Twitterverse, and his newly available book was downloaded from his website nearly 1,000 times. It was quite the whirlwind.







