those who invested a few months ago they have made a beatiful profit so far, but that is it, they made profit because they were the first ones, just like all the other ponzies out there.
the referral system is a gold mine, especially if you are promoting a website that promises high returns and is said to be reliable, I believe you know ptc sites, I saw a lot of people earn $1.000 per day with ptc site, these people had more than 20.000 DR
The case of hashocean has shown the big danger that is the system of referrals. People who sign up first and have money and create a good advertising campaign are the ones who enrich themselves on these ponzi sites, such as the owners of hyip monitor sites