Sadly, victims are often the fiercest defenders of such scams, at least until they lose their shirts. Wall of Coins is a peer-to-peer Bitcoin exchange that makes it easy to buy and sell bitcoins. Scalpers seek to profit from fleeting imbalances between buyers and sellers. Choose your timeframe depending on your desired level of market activity. Such Bitcoin traders attempt to capitalise on large swings within a range-bound market or major trends. International accounts may take days to become verified. After filling in all your details, click next.