A milestone in Bitcoin's history, the block reward will be halved for the second time today. Where the first "halving" cut the mining reward from 50 bitcoins to 25, for the next four years miners will only earn 12.5 bitcoins for each block they find - not counting mining fees.

This means that the sensational "25 bitcoin"-era is coming to an end. Since to the last halving almost four years ago, Bitcoin's experienced spectacular growth, in every conceivable way.

Bitcoin Magazine took a look at how the industry has grown and matured over the last 4 years.

The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc.

The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc.