What is blockchain cryptocurrency? blockchain technology, which was once tied only to Bitcoin and other cryptocurrencies, has now matured into a multifaceted tool that has applications and implementations in a variety of fields. The uniqueness of this technology is in its decentralized, unchangeable, and well-accounted principles in which every transaction made is visible and auditable. This article highlights areas where blockchain technology is being put into practice in the real world, and in fields other than finance.