He didnt specifically earn $70000 from one $100 loan. Lets be clear about that.
What the $100 loan allowed him to do was promote Bitconnect and FROM that he earned a lot from people signing up under him. Which I am one.
I dont make money on it from referrals, I make it on the loans, which I have made several hundred this week alone.
Its not a scam because you can see the blockchain and you can download the software off of github, because it is open source.
A setup that is on a blockchain and observable as open source software is the complete opposite of a Ponzi scheme.
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RE: $70,000 earned in 2 months from a $100 loan