Despite the hype and speculation that often puts them on the front pages, blockchains are here to stay. It is only a matter of time before they start to disrupt the way we work, invest and play. This series of short articles is a simple, non-technical overview of Blockchains. It is aimed at investors, executives or anyone who wants to prepare for the impact of the changes brought by this disruption. Part 1 - High level overview of blockchains. Part 2 - What makes blockchains self-sustaining. ...