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 bitcoin mining

A gentle introduction to bitcoin mining

Recently over dinner, I was asked to explain bitcoin mining, and I struggled as it is entangled with a number of other concepts.  Here’s my attempt at breaking it down into bite-sized pieces.

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