DIY Bitcoin Private Key Project

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This is a fun project that will help you understand Bitcoin keys better. You’ll need a pencil, paper, something to generate random output in binary (like a coin) and a computer. The purpose here is to get you doing something which will help you learn a lot, instead of just reading about pure theory. And it’ll be easy enough that you can just jump right in and follow along.

Important Preamble

Don’t use this key for your actual bitcoin. Practice with this guide first.

When you make your real key — the one that will hold real bitcoin — you must make it on an air-gapped computer if you use this method. An air-gapped computer must have no capability of connecting to the internet. It’s not enough to just temporarily switch off your wifi connection on a regular computer if you are serious about security; clever hackers exist and can extract your private keys even if you are temporarily disconnected from the internet. At the end I’ll explain what to do next if you want to use this method to make your real keys.

Ok, let’s begin the project…

Step #1 – Make A Big, Random Binary Number

You can flip a coin 256 times, but it’s better and faster to use dice. You can buy casino-grade dice to ensure fair, random rolls. But it’s also okay to just save money and just use any old dice. Even if your dice are not perfect and have some bias, as long as you use several at a time, you will achieve sufficient randomness.



Source link Bitcoin Magazine

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