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With traditional money, transferring funds from one account to another requires some intermediary authority or middleman. Even with hand-to-hand cash transactions, the issue, value and fiscal policy of money is controlled by a trusted centralized authority (such as a bank, agency or government).
Bitcoin operates differently in that no middleman is required in transactions as the trust between actors is derived from computer science and cryptology, rather than trust in a central establishment. It also means that Bitcoin is transferred directly from the sender to the receiver, with absolutely no intermediaries.
A key point to note is that because of this lack of central issuing body, cryptocurrency is created and transferred with the help of a process called “mining”. This process requires an extremely powerful computer to crunch down the billions of calculations required to solve cryptological functions.
In reality, the mining process is extremely complex and technical. Despite its complexity, the process is transparent and open for review due to the open-source nature of Bitcoin.
Reference at ccgmining.com