Unlike traditional currencies, Bitcoin is completely virtual. Not only does it not have a physical entity, it does not essentially have a virtual object that represents Bitcoin. Bitcoin is implicit in the transfer records of the money received and sent. Users can send bitcoins as long as they have a ** that proves their control and unlock it with **. These are usually stored in a computer's digital wallet. Owning a bitcoin is the only condition for using it, leaving control entirely in everyone's hands. 

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