Who in the world controls the bitcoin? I don't understand where it appeared and how it began to be one of the official currencies?
Who controls the course of Bitcoin?
If you have your own bitcoin store wallet, I can say you are the one who control your own bitcoin together with the password, private key or paraphrase. That's why its called decentralization.
You have control over your bitcoin itself no one can take control of your bitcoin even you're free to do anything with bitcoin. because bitcoin decentralization so you are fully responsible