In a nutshell, Coince is a company based in the UK, who is on the D&B and regulated by UK Compliance House"similar to US SEC. To my knowledge, they are the only legal high yield investment that provides a share certificate I was able to find out of hundreds of companies I researched.

The company has been around for 8 years however, they opened the affiliate investor program in January of this year. As stated any investment with yield return is a high risk which is why I advise discretion funds only. The basis of why they can offer such high returns is that they invest in wholesale electricity and host bitcoin and cryptocurrency miners, not in their office but at off-site locations due to security. This is a very profitable venture due to increasing cost of electricity and energy requirements for mining.

To date, there have been aprox 1.6 M active investors from over 60 countries, inside the USA you can invest with Bitcoin outside the US you can invest in almost any fiat currency as well. Coince has paid out consistently for over 200 days consecutively.

This site tracks most high-yield investments - http://allmonitors.net/top/ be sure to click on "most popular tab".