http://wikipewt4n75trifcse2ggaieot27svognl7idu6xmmqn37kf64rvsyd.onion/index.php/Anonymity
However, achieving reasonable anonymity with Bitcoin can be quite complicated and perfect anonymity may be impossible.It is anonymous in the sense that you can hold a Bitcoin address without revealing anything about your identity in that address. One person could hold multiple addresses, and in theory, there would be nothing to link those addresses together, or to indicate that the person owned them.So far so good, but there is another side to Bitcoin.