Cryptocurrencies have risen in popularity over the last few years to become one of the most widely talked about forms of investment and payment methods for online shoppers. The emergence of Bitcoin over the last ten years has attracted a following of technology enthusiasts as well as speculators drawn to its tendency to fluctuate wildly in value. This digital token, however, is just one of many cryptocurrencies out there.
This blockchain-based form of currency has become more and more viable over time, despite its tendency to create unpredictable highs and lows in value, with organisations like PayPal letting users pay for goods using Bitcoin. The value of cryptocurrencies, however, is still a major stumbling block to widespread adoption and use, but this ever-changing reality is favourable for those seeking to use cryptocurrencies as an investment vehicle as well as for cryptocurrency miners.
It’s actually quite difficult to create cryptocurrency relative to how traditional money is printed by a central bank. These legacy currencies, also known as fiat currencies, are managed centrally, with the central bank of any particular country issuing new physical notes and coins to replace older variants in circulation, which are removed from the economy. Cryptocurrency, on the other hand, is generated through a process called ‘mining’.
source : https://www.itpro.co.uk/digital-currency/30249/what-is-cryptocurrency-mining