There are various types of miners, which are used in the bitcoin network. One kind is called central mining. This takes place when one business swimming pools together huge amounts of computing power as well as buys up lots of other companies that are also utilizing this type of technique to get bitcoins. When you get a small amount of bitcoins, it is called " extracted" and also you can use it right away. However, if you buy a large amount of bitcoins, it is called central mining.