Probably even worse than a ponzi, I doubt anybody got any money from this.
Every mining scheme out there that promises insane profits is a scam, with the best equipment you ROI in about 250 days and they claim 20% in 20 days?
Total scam!

And people should be really careful with websites that show a company and registration number. It doesn't mean anything!

There are scammers who hunt for those names in the gov database and then they make a website that matches the name..
For example, they find something like: Extreme trading ltd in the business directory, they set up a website extreme-trading.xyzx and they claim they have a license.
When that website gets tagged all over the net they set up trading-extreme.abcd...then another one and another one.
And it's nearly impossible without a legal investigation to show proof they are not the same.