If Bitcoin mining were allowed to continue unchecked, the currency could suffer from the hyperinflation that occurs when too much money is printed. Bitcoin founder Satoshi Nakamoto, however, designed the currency to be limited to 21 million Bitcoins; already, 19.5 million have been mined.
In addition, Nakamoto devised a process known as the halving, or the reduction of the new Bitcoin supply by one-half, every 210,000 recorded blocks, or roughly every four years. The first halving occurred in November 2012; the most recent happened in April 2024.
Originally, Bitcoin miners could expect to be rewarded with 50 BTC for every successful block completed. Currently, they're getting 3.125 BTC. When the next halving occurs, probably in early 2028, the amount earned by miners will fall to 1.5625 BTC.