hi
   Now i am here to talk about how to start earn bitcoin the most popular and effective method is 
   earning bitcoin is mining. Mining is done by special type of computers which has ability to create very high hash power to solve complicated algorithm bit coin is in block which is cover by very difficult algorithm when block is solve bitcoin come out each block as 25 coins for the time as time passing away difficulty level for block increase and its happen every 4 year of period.