The world is moving towards a “cashless” existence. If we think, is it actually true, just ask in our mind when we have used cash from our pocket for the last time? Most people don’t even carry enough change to pay a toll or parking meter anymore. Almost everything that has to do with our money has been moved online. It is probably a good idea to believe that this is the way of the present, and not the future anymore. But this can be difficult for people who don’t fully understand what exactly the digital currencies, crypto currencies and fiat currencies are. Crypto currency is a subset of digital currency. It is a specific type of digital currency whose unique angle and appeal is privacy, decentralization, security and encryption. Bitcoin, Ethereum, Litecoin etc. are some of the examples for the leading crypto currencies. Block chain is the platform which brings crypto currencies into play. The block chain is the technology that serves as a distributed ledger that forms the network or ‘chain of blocks’. This network creates the means for transacting, and enables transferring of values and information. This article try to contemplate the rising trend of crypto currencies in a country like India and its future prospects. It also try to analyse the size of the Bitcoin market, the biggest of the crypto currencies and the growth in its market capitalisation.