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The total value of all Bitcoin in existence is now more than £112billion.
Transactions are made without middlemen, so there are no transaction fees and no need to give your real name.
More businesses are beginning to accept them and in some parts of the world you can even buy pizza with Bitcoins.
You can set up a virtual wallet websites like Blockchain to store, keep track and spend your digital money.
You are also able to purchase Bitcoin through an online exchange or Bitcoin ATM.