Glossary

Altcoin

Plain-language definition Crypto glossary

Key takeaways

An altcoin is any cryptocurrency other than Bitcoin — the word is short for "alternative coin."
The category covers everything from major smart-contract platforms to small, speculative tokens.
Altcoins arose to pursue goals Bitcoin was not designed for: programmable contracts, faster or cheaper transactions, or stronger privacy.

Definition

Altcoin is shorthand for “alternative coin” — any cryptocurrency other than Bitcoin. The term is used loosely: some people apply it to every coin besides Bitcoin, others exclude Ethereum too since it has become a category of its own. Either way, it signals that a coin is being compared against the market’s original reference point.

Why it matters

Altcoins range enormously in purpose, maturity and risk, from established smart-contract platforms to small, thinly traded tokens with little history. Grouping them under one label is convenient for conversation but can flatten real differences in liquidity, development activity and use case, so the label alone tells you very little about any individual coin’s risk profile.

Example

Ethereum, XRP and Litecoin are all commonly described as altcoins despite having very different designs and purposes. You can compare assets side by side on our comparison tool.

This is educational information, not financial advice. Coingsty does not recommend buying or selling any asset.

FAQ

Frequently asked questions

Is Ethereum an altcoin?

Yes. By the standard definition every cryptocurrency except Bitcoin is an altcoin, including large platforms like Ethereum, though some people informally treat the biggest coins as a separate tier.

Are altcoins riskier than Bitcoin?

Generally they are more volatile and less liquid than Bitcoin, and smaller altcoins especially can carry significant risk. Risk varies widely across the category, from established networks to micro-cap tokens.

How many altcoins are there?

Thousands, and the number changes constantly as new projects launch and others fade. They range from established networks to short-lived speculative tokens.