Blockchain technology is a distributed data storage distruted ledger system where all records and transactions are open to all individuals in the system, can be seen by everyone and new records can be added, and provides tracking of encrypted transactions and processes. Although when it comes to blockchain technology, the first thing that comes to mind is in the field of finance; such as transferring and registering crypto currencies, they can be use in many different industries. The distributed ledger system is used in projects carried out in many industries, especially in keeping records of data and processes. Blockchain technology has been contributed to increasing the use of crypto currency, especially by producing solutions to security problems in many areas. The problem of trust in crypto currencies, which are not supported by an official authority, is at the forefront for some, while others consider crypto currency as an opportunity, the inevitable universal currency of the future. In this study the advantages and disadvantages of blockchain technology is examined and approach of World and Turkey’s are evaluted. With the recent history of crypto currency Turkey has to remove common crypto currency rapidly.