What is blockchain

How transactions are recorded, verified, and secured.

Overview

In this lesson we cover the fundamental concepts behind what is blockchain in the context of introduction to crypto. This is an educational overview — we don't recommend any specific trade, token, or action.

What you'll take away

• Clear definitions of every term used in this lesson.
• Step-by-step walkthroughs with screenshots.
• Common mistakes and how to avoid them.
• A short checklist you can save to reference later.

Deep dive

The full lesson text continues here with examples, diagrams, and screenshots. Members can also download the accompanying PDF and complete the module quiz at the end.