The Blockchain: A Gentle Introduction

5 Pages Posted: 19 Dec 2016

See all articles by Jan Witte

Jan Witte

University College London - Department of Mathematics

Date Written: November 2016


Blockchain is a distributed database that keeps a chronologically-growing list (chain) of records (blocks) secure from tampering and revision. While computerisation has changed the nature of a ledger from clay tables in the old days to digital records in modern days, blockchain technology is the first true innovation in record keeping that could potentially revolutionise the basic principles of information keeping. In this note, we provide a brief self-contained introduction to how the blockchain works.

Keywords: Data Security, Blockchain, Bitcoin, Cryptocurrency

Suggested Citation

Witte, Jan, The Blockchain: A Gentle Introduction (November 2016). Available at SSRN: or

Jan Witte (Contact Author)

University College London - Department of Mathematics ( email )

Gower Street
London, WC1E 6BT
United Kingdom

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