Hi Qiuyue201,

Thanks.  What I don't understand though is they take BTC/WAVES/ETH and they only require I enter a Waves wallet.  If I send from my BTC, how will they know it was "me".  I don't know if I am explaining so I will give example.

Ex. - 

3 people sign up and say they will send 1 BTC and then give their email and a Waves address (to receive their token/dividend).
Then only 2 people send 1 BTC.  How do they know "which" 2 to return the coins to?
(or what if I am the one who did not send the BTC and I claim that I was the one who sent it from "x" address?)

I want to invest in one but it is a little nerve racking for me to send BTC when I can't understand how I can confirm it was my payment.

Thanks again for the help.