What is Blockchain?

Developed from 2008, blockchain is primarily a technology for storing and transmitting information. This technology offers high standards of transparency and security because it works without a central control body. More concretely, the blockchain allows its users - connected in a network - to share data without an intermediary. 

What is an API? What's the point ?

In computer science, API is the acronym for Application Programming Interface , which is translated into French as application programming interface or application programming interface . The API is an IT solution that allows applications to communicate with each other and to mutually exchange services or data. Application programming interfaces generally offer a set of functions which facilitate, via a programming language making it possible to launch requests, access to the services of an application.