Altcoins Explained: Beyond Bitcoin

Altcoin is a general term for any cryptocurrency other than Bitcoin — short for "alternative coin." Thousands of altcoins exist, ranging from major, well-established projects with real usage to speculative tokens with little more than a name and a community behind them, which makes "altcoins" an extremely broad category rather than a single type of asset.

Ethereum is the largest altcoin by market value and functions differently from Bitcoin — rather than being designed primarily as digital money, it's a platform for running smart contracts and decentralized applications, as covered in the earlier lesson on blockchain basics. Many other major altcoins occupy similar "platform" categories, competing with Ethereum on speed, cost, or specific technical approaches.

Beyond platform coins, altcoins span a wide range of purposes: stablecoins, which are designed to maintain a stable value by being pegged to a traditional currency like the US dollar, used heavily for trading and transferring value without crypto's typical volatility; utility tokens, tied to specific applications or services built on a blockchain; and a large tier of smaller, more speculative tokens with far less established use cases, higher volatility, and significantly higher risk of losing most or all of their value.

Because the altcoin space ranges from established, widely-used projects to speculative tokens with little underlying substance, the research bar for altcoins is generally higher than for Bitcoin — understanding what problem a specific project claims to solve, how established its usage actually is, and how concentrated its ownership is among a small number of holders (which can make it easier to manipulate) are all relevant questions before allocating meaningful capital to any individual altcoin, far more so than with more established assets.