According to Bitcoin market raising the most of scammers create their own websites using different name and differ style to " invest some bitcoin and earn double scheme" or "earn and invest to withdraw" every of websites are scam, fake .
Few of this type of websites block your ip after your invest , few of websites close(exit) after your invest. They collect most of bitcoin from simple type of child man people but never get anymore.
I know some of scamm
1. bits2u
2. spaceminer
3. abc.io (every end with io)
4. doublebtc
5. btczenerator
6. btz
Note: Please don't invest anywhere none are genuine .
Thanks a lot.