Bitcoin hits a 2-year high thanks to a big change in the code

``At the beginning, the reward for mining was 50 bitcoin per "block" -- which is a group of transactions. It then fell to 25 bitcoins in 2012. It is now set to half again, thus reducing the supply growth of bitcoin. The process is known as "halving" and was written in the original code for bitcoin. With fewer bitcoin coming into the system, the price has risen with increased trading activity... "The block halving will dramatically decrease the bitcoin being added as we approach 75 percent of all bitcoin issued. People understand that in this world of ever expanding assets and printing of money, we have something that's fixed and limited in issuance. It gives a decent alternative for people who want to hold assets that can have sustained purchasing power."