Ethereum is software running on a network of computers that ensures that data and small computer programs called smart contracts are replicated and processed on all the computers on the network, without a central coordinator. The vision is to create an unstoppable censorship-resistant self-sustaining decentralised world computer.
In the context of data security, the immutability of data stored on blockchains is important. What do people mean when they say “Blockchains are immutable”? In this post I try to explain the key concepts. It...
People use the term ‘blockchain technology’ to mean different things, and it can be confusing. This article is a gentle introduction to blockchain technology and assumes minimal technical knowledge. It attempts to describe “what it is” rather than “why should I care”.