The bitcoin community and the government dont know the identity of satoshi, the most famous bitcoiner. How is that possible, if bitcoin can't be used anonymously?
Best guess is NSA = Satoshi. Ask any insider privately. They all tell me this.
Even if that isn't true, you have no way to know if the NSA knows who Satoshi is.
Also block chain analysis seems to indicate he hasn't spent any of his Bitcoins, and who was recording IP addresses in Utah in 2009. It is 2014 now.