Level 0
Level 0 — Foundations
What money is, what a blockchain is and why Bitcoin appeared. We start from zero and talk openly about the risks.
The lessons of this track
- What money is and why trust mattersWhat makes something "money", how we got from gold to banknotes and bank accounts, and why it all rests on trust.9 minnot finished
- What a blockchain isA shared ledger copied on many computers, with pages linked by digital fingerprints. Try a hash yourself and see why history cannot be changed in secret.12 minnot finished
- Bitcoin in plain wordsWhat problem Bitcoin tries to solve, how a network with no centre works and what a limited supply means, with no prices and no predictions.11 minnot finished
- Private key, public key and addressHow you prove you are the owner without showing your secret: the key pair, the address and what you never give anyone, explained with analogies and a diagram.11 minnot finished
- Why the price moves so muchWhat volatility is, what causes it (supply and demand, a small market, news, leverage, panic) and what the maths of losses shows, with hypothetical examples.10 minnot finished
- What can go wrongFraud, phishing, a lost key, platforms that can fail, regulation and the risk of total loss: what to recognise before taking any step.11 minnot finished
Finish all 6 lessons to earn the "Level 0 — Foundations" badge.
Every lesson will explain the risks as much as the technology and will recommend no coin, platform or trade. The full disclaimer.