Halving

Also known as having, this is the state in which the block rewards that are awarded to the user are cut half. Till date Bitcoin has had 3 such events of Bitcoin Halving. Primarily it cut the rewards from 50 bitcoins to 25 bitcoins. Second it went from 25 Bitcoin to 12.50 Bitcoin and finally it cut the Bitcoin from 12.50 Bitcoins to 6.25 Bitcoins.