I thought I would provide some up to date (January 2019) information regarding this guy. He uses the name Peter Marais. He is in fact the same person who was convicted for fraud in the USA under the name Willem Petrus Marais. He uses a British passport and has been found to live in various addresses in the South London, Surrey area of England. He moves around frequently and uses a pay-as-you-go mobile phone to avoid being tracked. He is currently being investigated by the police in several countries on suspicion of large scale Bitcoin fraud and obtaining money by deception. His brother Hein Marais is currently under police investigation in Ireland and charges of theft have been brought against him by the South African police. There are are a large group of investors in several countries who are taking legal action against both of them for the return of their investments. They were running a scam known as Bit Tec whereby they took money from investors and promised to buy Bitcoin on their behalf and return the Bitcoin with interest after an agreed number or months. No investors have had any Bitcoin or money returned to them. Legal and criminal action is being taken against both of the Marais Brothers for the return of the investments. I would strongly advise that people should not get involved with any dealings with either of these two people.