CME doesn't sell bitcoins (or any crypto currency for that matter), this is talking about a USD denominated derivative that pays out based on the price of bitcoin at any given day. It works very similarly to a bet, and essentially you say I think that bitcoin will cost $x on this date and whoever is on the other side of the contract either wins or loses based on where the price actually ends up. Futures are a pretty sophisticated asset class and it is really easy to get burned in them. Very few retail investors use them for speculation. I don't mean this in a demeaning way but if you are not already familiar with futures markets you should probably not bother trying to trade these.
CME doesn't sell bitcoins (or any crypto currency for that matter), this is talking about a USD denominated derivative that pays out based on the price of bitcoin at any given day. It works very similarly to a bet, and essentially you say I think that bitcoin will cost $x on this date and whoever is on the other side of the contract either wins or loses based on where the price actually ends up. Futures are a pretty sophisticated asset class and it is really easy to get burned in them. Very few retail investors use them for speculation. I don't mean this in a demeaning way but if you are not already familiar with futures markets you should probably not bother trying to trade these.