the website url is
http://up-btc.cf/ Although I haven't got into their trap but there are many things about them that made me sure they are scammers.
Their Claim : They claim to multiply your bitcoin
hunderfold in just one day .
How do they claim to do it : According to them they have found what they say
imperceptible but very significant flaw
(associated with the commission)[/u].
According to them,using this flaw, a receiver gets more bitcoin then the sender has sent .
Using this flaw they can earn lots of bitcoins by sending and receiving it multiple times.They promise to pay their investor half of what they earn from their investors..
Now what made me suspicious is that first there is no sign up or log in page on their site so how are they going to keep record of investor is not clear and in the absence of this information how will the return the profit to investor?
Second,their Blockchain transaction history shows receiving btc from different addresses while no such data is available for sending
and last but not least,if someone really found any such flaw that can make him rich,why would he discloses it to everyone? They can invest small amount of btc and keep all the profit to them
