Some of this we have known, the specific invention, patent and sale of blockchain patent, I didn’t know, but I am sure others more knowledgeable re crypto probably did. Blockchain was developed and patented by IBM in 1991. They sold the patent to the NSA, The National Security Administration, in 2001. Watch the whole video.

https://www.youtube.com/watch?v=u7jV7nk-bU0