Bitcoin is the sign currency traded through the Open Source Cryptographic Protocol. There is no need for financial institutions, regulatory bodies, or fixed houses to deal with Bitcoin.In 2008, Satoshi Nakamoto introduced this currency. He called this currency as peer-to-peer transaction. 
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Bitcoin transactions are protected by a server named Bitcoin Miner. If there is a bitcoin transaction between peer-to-peer communication systems in multiple computers or smartphones, its central server user laser updates. As soon as a transaction is completed, new bittacquines are produced. By 2140 new bits of bits will be reduced to half every four years. After 2140, 21 million Bitcoins will not be produced and no new bits will be made.