I decided to dedicate this space to the preparation of my book “Everything I Know About Bitcoin.” I have been working on it for quite some time, and I chose to share it online and completely free of charge, so that truly anyone interested in Bitcoin can access it. My goal is to contribute to raising awareness about Bitcoin and its significance – without barriers and without restrictions.

If you have ideas, questions, or feedback, I would be very grateful – it will help me shape the book into something as useful as possible for a wide audience.

If you like the project and would like to support its creation, you can also do so with a voluntary contribution in Bitcoin at this address:

:  bc1qj2x7c6vpsjvyw83fwjx07v0wcx5xf0774sfkvg

Generating and Storing the Seed

Generating and Storing the Seed Probably the most important reason why hardware wallets are more secure than software wallets is the secure generation of the seed itself. As we have already explained in the book – whoever owns the seed also owns the private keys, and therefore all the bitcoins assigned to them. Unlike software wallets, with a hardware wallet the seed never enters the online environment. This means it cannot be captured by malware, viruses, or anyone monitoring your computer. This is one of the most fundamental security differences. If you previously used a software walle..

Initial Setup

Initial Setup All the settings described in this book will be demonstrated using the Trezor hardware wallet. With other manufacturers, the user interface may differ slightly, but the operating principles remain essentially the same. Also keep in mind that software is constantly evolving – therefore, some screens and steps may differ over time from what you currently see. 1. Visit the Official Website Open your browser and go to: https://trezor.io/start. Important: carefully check that you entered the address correctly – a typo could lead you to a fraudulent website. The same address w..

Trezor Passphrase

Trezor Passphrase One of the main reasons why I often recommend the Trezor hardware wallet in my book is its support for a so-called passphrase, an additional password that significantly increases the security of your bitcoins. While the seed (your backup, usually 12, 20, or 24 words) serves as the main key to your wallet, the passphrase is an additional password that you choose yourself. It can be a word, a sentence, or a combination of characters known only to you. This password is not part of the seed, but together with it creates a completely new and unique access to your wallet. Simply..

Shamir backup

Shamir Backup One of the biggest fears of every “bitcoiner” is the fear of losing their seed. This is exactly what the technology called Shamir Backup is designed for. Shamir Backup (or more precisely “Shamir’s Secret Sharing”) is a method that allows you to split your seed (the main key to your bitcoins) into multiple parts, while only a certain number of them are required to restore access. This technology was first implemented by the Trezor Model T hardware wallet (and the newer Trezor Safe 5). How does it work? Imagine that you split your seed into 5 parts. From these five parts, you set t..

First Bitcoin Purchase

First Bitcoin Purchase Congratulations! Your Bitcoin wallet has been successfully installed and is ready to receive your first satoshis, the smallest units of Bitcoin. Now comes an important question: How do you actually obtain Bitcoin? There are several ways. Some are technically more demanding (such as mining), others depend on an agreement with your employer (for example, if they agree to send part of your salary in bitcoin). However, let us look at the simplest and most commonly used method: buying Bitcoin with fiat currency (for example, euros). How to do it? There are several op..

First Bitcoin Purchase – Bisq (Decentralized Exchange)

First Bitcoin Purchase – Bisq (Decentralized Exchange) If privacy, independence, and not sharing your personal data with any third party are important to you, you may be interested in buying Bitcoin through the decentralized marketplace Bisq. Unlike traditional exchanges that require registration and identity verification, Bisq operates without a central administrator, without registration, and entirely peer-to-peer, meaning it facilitates communication directly between end users. How does it work? While on traditional centralized exchanges you simply send money via bank transfer or c..

First Bitcoin Purchase: Vexl – Find Your Own Bitcoin Trader

First Bitcoin Purchase: Vexl – Find Your Own Bitcoin Trader Do you remember the opening sentence of this book? “Bitcoin is a decentralized peer-to-peer virtual currency.” The main idea of Satoshi Nakamoto when creating Bitcoin (as stated in his whitepaper) was to establish a currency that would be used directly between people – peer-to-peer – without the need for any intermediary. This exact vision is fulfilled by the Vexl application. Vexl is a mobile application that enables simple, secure, and private trading of bitcoins between users without the need for identity verification (so-cal..