Popular digital currency bitcoin is a project run by the US National Security Agency (NSA), according to a group that tracks the activities of government organisations around the globe.
The group, named CIA Project, claims evidence that the cryptocurrency is made by the NSA or the CIA.
The team added that Bitcoin Forum, a bitcoin community where Nakamoto used to communicate, usually removes posts connecting bitcoin with CIA.
The group added that the common program used by most cryptocurrencies to create secure keys is suspected to be back-doored by the NSA.
It noted that a recent WikiLeaks document exposed the NSA's connection with the program used by most cryptocurrencies.