Bitcoin halving is often referred to as “Halvening”, it’s a formulated reduction in the reward coins offered to the miners using a predefined blockchain algorithm. Bitcoin halvings take place once in every four – 4 years approximately, or for every 210,000 block transactions. The process of halvening started in the year 2012, approximately after 4 years of the invention of bitcoin i.e 2008, but practically bitcoins came into play in the year 2009.