What Is Cryptocurrency? A Beginner's Overview
The building blocks: blockchains, tokens, wallets, and why any of this exists.
Cryptocurrency is digital value recorded on a public ledger called a blockchain. Anyone can read the ledger, and no single company controls it. That combination — open access plus no central operator — is what makes the technology distinctive.
There are two broad categories of assets. Native coins like bitcoin and ether are issued and secured by their own blockchain. Tokens, by contrast, live on top of an existing blockchain and follow standard templates such as ERC-20.
To hold cryptocurrency you need a wallet, which stores the private keys that authorize transactions. Wallets do not hold the coins themselves; they hold the keys that control addresses on the blockchain.
Cryptocurrency prices can move sharply and holdings can lose value. Nothing in this guide is investment advice — the goal is to explain how the pieces fit together so you can research further on your own terms.