What does mining a bitcoin really mean?

http://ift.tt/2iglA08 DELHI: 2017 was the year when curiosity about the Bitcoin hit an all-time high, thanks largely to a dramatic surge in its value. Notwithstanding recent fluctuations in its price, interest remains strong in the original cryptocurrency, which was launched in 2009.

from Google Alert - Bitcoin http://ift.tt/2EbXoaO