>I think it is especially reasonable to assume that Bitcoin exists with the tacit consent of the United States National Security Agency, even if the NSA didn't invent Bitcoin.
How so? If the NSA really hated bitcoin, what would they do? Even if it were made illegal in the US, the United States are not the world, and it would be extremely hard to enforce.
How so? If the NSA really hated bitcoin, what would they do? Even if it were made illegal in the US, the United States are not the world, and it would be extremely hard to enforce.