This document has been moved to: https://pascalpares.appspot.ovh/an-introduction-to-the-bitcoin-system/
This paper is a technical introduction to the Bitcoin electronic cash system. It presents the design principles of transactions and blockchain. It is based on the Satoshi Nakamoto's paper and the Wiki site of the Bitcoin community.
This article is written as a kind of tutorial, to go further, we recommend a more formalized article by Krzysztof Okupski: Bitcoin Developer Reference.