CRYPTO BASICS
Everything a beginner needs to understand cryptocurrency from the ground up.
🔍 What is Cryptocurrency?
Cryptocurrency is a form of digital or virtual money that uses cryptography for security. Unlike traditional currencies issued by governments (called "fiat" money), crypto is typically decentralised — meaning no single bank, government, or company controls it.
Instead of a central authority keeping track of who owns what, cryptocurrencies use a distributed ledger called a blockchain — a shared record maintained by thousands of computers worldwide simultaneously.
💡 How Does It Work?
When you send crypto to someone, the transaction is broadcast to a network of computers (nodes). These nodes validate and record the transaction on a blockchain. Once confirmed, it's permanent and irreversible.
Miners or validators process these transactions and are rewarded with new cryptocurrency — this is how new coins enter circulation.
🏦 Crypto vs Traditional Money
| Feature | Crypto | Fiat |
|---|---|---|
| Control | Decentralised | Central bank |
| Supply | Often fixed | Can be printed |
| Transparency | Public ledger | Opaque |
| Borders | Borderless | Restricted |
| Reversals | Irreversible | Possible |
📅 A Brief History
🔑 Key Concepts to Understand
Private Key: Like a password that proves ownership of your crypto. Never share it with anyone.
Public Key / Address: Like a bank account number — safe to share so others can send you crypto.
Seed Phrase: 12–24 words that can recover your entire wallet. Guard with your life.
HODL: Originally a misspelling of "hold" — refers to keeping crypto long-term regardless of volatility.
Market Cap: Total value of a cryptocurrency (price × circulating supply).
Altcoin: Any cryptocurrency that is not Bitcoin. Ethereum, Solana, and thousands of others.