How to Prevent Fraudulent Claim over LLC Ownership?

[Ewan Tong]

I'm sure this is a crazy question, but how does one prove their ownership of an LLC?

I just filed an LLC in Massachusetts because I want to transfer the title of my property to my LLC. However, it seems that Massachusetts (just like many other states) does not request information on the member(s) nor their percentage interest in the LLC filling. In other words, there is NO ownership information in the government database. According to my preliminary Internet research, people say that this "ownership" is proven in the
LLC's Operating Agreement. BUT...

What prevents a third party from making their own (fraudulent) Operating Agreement in my LLC's name, claiming that it is the owner of my LLC, and selling my property?

Any idea would be greatly appreciated.