Crypto Technologies

Blockchain and the mechanics.

A blockchain is neither magic nor a company. It's a set of rules that allows thousands of strangers to agree on a list of transactions, with no one in control and no need to trust each other. This section explains how it's done.

It matters more than it sounds. Nearly every argument about crypto turns out to be an argument about this machinery: how much energy it uses, why fees rise and fall, whether transactions can be blocked, whether a network can be taken over by whoever spends the most. People who understand the mechanism reach different conclusions from people repeating a headline about it.

Start with Proof of Work. It explains what miners are really doing, why the puzzle has to be hard to solve and easy to check, what the difficulty adjustment is and why it exists, and where the electricity actually goes. It also sets out what proof of work buys and what it costs, and leaves you to decide whether the trade is worth it.

This is where the vocabulary lives. Hashrate, difficulty, forks, nodes, confirmations: these words turn up in every crypto news story and are almost never explained in one. If you have read that a network's hashrate hit a record and could not tell whether that was good news, bad news or neither, this section answers it.

You do not need to follow the mathematics to follow the argument. Everything here is explained in plain language, and where a diagram makes it clearer, there is a diagram.