Crypto Basics
Everything you need to understand cryptocurrency, blockchain, and digital assets.
What is Cryptocurrency?
Cryptocurrency is a digital form of money secured by cryptography and recorded on a decentralized network. Unlike government-issued fiat currency, most cryptocurrencies are not controlled by any single institution — the rules are enforced by software run by thousands of independent computers.
What is Blockchain?
A blockchain is a shared, append-only ledger that records transactions across a network of computers. Transactions are grouped into 'blocks' and chained together cryptographically — once recorded, a block cannot be altered without redoing every block after it, which makes the history tamper-evident.
What is Bitcoin?
Bitcoin (BTC) is the first and largest cryptocurrency, created in 2009 by the pseudonymous Satoshi Nakamoto. It is a peer-to-peer digital currency with a fixed supply of 21 million coins, often described as 'digital gold' for its scarcity and use as a store of value.
What is Ethereum?
Ethereum (ETH) is a programmable blockchain that introduced smart contracts — code that runs exactly as written. It powers decentralized applications (dApps), DeFi, NFTs, and most of the on-chain economy.
What is a wallet?
A crypto wallet stores the private keys that prove ownership of your coins. Custodial wallets (exchange accounts) hold keys for you; non-custodial wallets give you sole control — and sole responsibility.
Hot vs cold wallets
Hot wallets are connected to the internet (mobile apps, browser extensions) and are convenient for everyday use. Cold wallets stay offline (hardware devices) and are far safer for long-term holdings.
How do I buy crypto?
Pick a reputable exchange (Coinbase, Kraken, Binance), complete identity verification (KYC), deposit funds by bank transfer or card, place a buy order, then withdraw to your own wallet for self-custody. Never leave large balances on an exchange.
A note on risk
This content is educational only and is not financial advice. Cryptocurrency is highly volatile and you can lose your entire investment. Never invest more than you can afford to lose, and always do your own research (DYOR).
