Bitcoin doesn't exist at all! It is just our imagination tells us that we have some. In fact everything we have is just numbers printed on our bills and accounts! Everything we cannot touch is basically scam.
You may say: "wait! I can sell and buy bitcoin's and buy material things with it!". But it all just a big line in which an individual just a point in the chain. When you buy or sell only the number on your account changes. It's not real thing.
Who stays behind it all? The USA (the capital of all world crisis and biggest financial scammers from the Wall Street), maybe Russians (every one judges them in everything today, so why not them?!), maybe China (they are really smart in everything), aliens, marmonts,... I have a lot of variants.
In the case of Montero I will just say that yes, it was created for dark transactions on the dark net. I guess there is no Metter to explain what I wish to say by this.