What is blockchain?
In the current situation, until you buy a good or service from another person, there must be a middleman between you, the bank or credit card company, who are in the process of cash settlement between you. The blockchain system or technology eliminates the mediator concept and enables you to complete the process directly with the seller.
This process is done through complete encryption of the exchanges and is recorded in decentralized electronic records, meaning that it is available on a wide network of computers, everyone can see it. These computers must agree to the exchange process in order to be confirmed and registered.