The aim of Introduction to Blockchain course is to introduce the main foundations of this emerging technology. The Blockchain technology was originally dedicated for Bitcoin, but blockchain is now being a general purpose technology. The generalization is materialized by the definition and the use of programming language, such Solidity, Python, …The blockchain technology is , mainly, founded on two well-established systems in computer science : Distributed system (Peer-To-Peer) and Cryptosystem  (Cryptographie, Hashing).