Yes. Every team member and advisor has a Linkedin with associated work history, and as well you can see many of the team on the youtube channel history here: https://www.youtube.com/c/CryptoCurrencyNetwork
Presale has not begun yet, it starts 4/10.
I do not know of one.
It means that it is an existing profitable mining operation, that has capability and available space in place already to expand. It is not just an idea.