4 November 2019 - Xiao Chen

Abstract

Bitcoin is the first idea of a decentralized currency  which has attracted lots of attentions. A set of time-ordered  transactions are recorded in files called “blocks”. Each block  contains the hash value of the previous block, and they  eventually form a hash chain called “Blockchain” which is  essentially a public, immutable and ordered distributed ledger. Actually, Blockchain can be applied to various scenarios from cryptocurrencies to many applications including a distributed storage system, such as IoT systems or supply chain management systems, etc. This talk will briefly summarize the history of blockchain technology and its current varieties. Additionally, consensus mechanism, as a key part of Blockchain system, will be discussed on the basis of its working principle and evolution.