What is an altcoin?

Altcoin, in its broad usage, means a cryptoasset other than Bitcoin. The name combines “alternative” and “coin.” Assets that are technically tokens may also be included in the altcoin group in everyday market language.

Does Ethereum count as an altcoin?

Under the non-Bitcoin definition, ETH is included. Some market reports instead discuss Bitcoin and Ethereum separately and call the remaining assets altcoins. Checking which definition a table uses prevents mismatched comparisons.

For example, “the altcoin market grew” leaves the scope unclear unless the writer explains whether ETH is included. Coinbase’s altcoin guide illustrates usage that treats Ethereum separately. The term should not be assumed to have identical boundaries everywhere.

What does the altcoin label tell you about risk or technology?

Very little on its own. A network’s native coin, a governance token and a stablecoin can fall within the same broad group while serving different functions and carrying different risks. The coin versus token distinction describes technical structure; altcoin is a classification relative to Bitcoin.

Being called an altcoin does not mean an asset is cheap, new, trustworthy or likely to deliver high returns. Assessing it requires examining supply, use and holders’ rights; the tokenomics checklist develops those questions.

Recognizing an asset’s label and placing an order are different tasks. A first crypto purchase involves checking the pair, order type and net amount; the altcoin label cannot replace those checks.

Example

To illustrate scope alone, suppose all assets other than Bitcoin have a combined market value of $100 billion, including $30 billion for ETH. A measure counting ETH as an altcoin shows $100 billion; one excluding it shows $70 billion. The difference does not by itself indicate an outflow. The two measures simply include different assets.