Who is using blockchain and how?

In the current era of technology, other than any buzz technology, blockchain has the capability to enter any industry as a disrupter. This could be to reduce operational expenditure, overcome cybersecurity-related issues, deliver identity and access management solutions, facilitate collaboration between private and public institutions, achieve a better data management system, enhance and simplify logistic and supply chain management, allow a seamless insurance sales and management system, or deploy a better health record database system to protect people against any data theft or espionage attempt.