An interesting question is whether Bitcoin is money according to Islam.
There are many things to keep in Mind! Like first of All, In islam anything on which you don't work Hard is Haram. In BTC, we do Mining, its working, energy is used, so it's fine. Second, they say it dosen't have a physical body, So Visa cards, Easy loads balance also don't have a physical body and other than that We dont buy Altcoins and BTC, In reality we invest in the purpose of the coin, Like Linda coin will be soon for Medical researches etc, So we're being a part of that research by supporting it.
Also, some scholars call it Haraam and banned it, But Paper money was also haram and later allowed, Bitcoin will soon be allowed as well.
We need to be ready for it.
This is just my view, and it might be wrong , its possible, so do your own research as well.