So the title is incredibly misleading?
You can draw your own conclusions as to why they went with the title they did.
Edit: In this thread:
> I wonder how the arrest went down, why he took a plea, what the details of his presentation were
>What if he did the exact same presentation in youtube, and in NK they saw that presentation?
> The US sentenced a crypto researcher to five years in prison after he presented at a blockchain conference in North Korea.
> Prosecutors say Virgil Griffith, 39, undermined US sanctions imposed on North Korea.
> "The most important feature of blockchains is that they are open" Griffith said in his presentation, according to prosecutors.