A gentle introduction to immutability of blockchains

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 may be useful to read introductions to blockchains and Bitcoin if you have just arrived here or are unfamiliar with them.

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A gentle introduction to blockchain technology

A gentle introduction to blockchain technology

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, which is something for a future post.

Shorter companion pieces to this are:

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