I was sent a discord message with an invitation to an exchange called www.doxxwallet.com. They offered me 0.21 bitcoin as a joining bonus, and I created the account and according to them do indeed have a wallet with .21 bitcoin. In order to withdraw the bitcoin, I have to transfer to the website 0.006 bitcoin and then I can withdraw the entire balance.
This sounds pretty scammy, but I wanted to see if anyone else had heard of them or had a way to verify that this website is legitimate? I have an image of the message I received below.