Altcoins, Tokens and Coins: What's the Difference?

What Is an Altcoin?

The word altcoin is short for "alternative coin" — meaning any cryptocurrency that is not Bitcoin. That covers an enormous range, from large, established networks worth hundreds of billions of dollars to obscure tokens that trade a few hundred dollars a day. When you open any crypto price table and scroll past Bitcoin and Ethereum, everything else is broadly an altcoin.

The altcoin category exists partly for historical reasons. Bitcoin was first, so everything that followed inherited the label "alternative." Today the term is less about quality and more about position: Bitcoin is the benchmark, and altcoins are measured against it.

Coins vs Tokens: The Core Distinction

Inside the altcoin universe, there is one technical split that matters more than any other: coins versus tokens. Understanding this distinction explains why two assets can both be called "crypto" and yet work in completely different ways.

Coins

A coin is the native currency of its own independent blockchain. Ether (ETH) is the coin of the Ethereum network. Solana (SOL) is the coin of the Solana network. These blockchains run on their own rules, their own validators, and their own history of transactions. The coin is what participants use to pay for the network's transaction fees and, in many cases, to participate in keeping the network secure.

Because a coin requires an entire blockchain behind it — software, nodes, a developer community, and enough participants to keep it running — launching a genuine new coin is a significant technical undertaking. That barrier to entry means the number of distinct layer-1 blockchains (base-level networks) is far smaller than the total number of crypto assets in existence.

Tokens

A token, by contrast, is issued on top of an existing blockchain rather than running its own. A developer writes a smart contract — a self-executing piece of code stored on the blockchain — that defines the token's name, total supply, and rules. That contract is then deployed on a host chain, most commonly Ethereum, but also Solana, BNB Chain, and others.

The practical result: creating a token does not require building a blockchain from scratch. Anyone with moderate programming knowledge and enough funds to pay gas fees (the transaction costs charged by the host network) can issue a new token in hours. This is exactly why tens of thousands of tokens exist — the technical friction is low. Ethereum's guide covers how smart contracts make this possible.

The Main Categories on Any Crypto Table

Open a live crypto market page and you will notice that altcoins cluster into recognizable groups. Here is an honest, one-sentence description of each major category.

These categories are not rigid. A project might start as a gaming token and expand into DeFi. An exchange token might migrate to its own chain and become a coin. The labels help orient you, but always look at how the asset actually functions.

Why Thousands of Altcoins Exist

The sheer number of altcoins surprises most people new to crypto. The short answer is that token issuance is easy and cheap relative to the potential upside a project hopes to capture.

When a development team launches a new protocol, they often issue a token for two practical reasons. First, it funds the project: selling tokens publicly raises capital without going through traditional venture or equity routes. Second, it distributes governance rights: holders of a governance token can vote on changes to the protocol, theoretically decentralizing control. Both are legitimate motivations — but they also mean that a promising-sounding idea and a website are sometimes enough to launch a token.

The result is a landscape shaped by what statisticians call survivorship bias: the tokens that appear on major price tables today are, by definition, the ones that survived long enough to attract an audience. Many thousands of tokens launched in previous years no longer trade at all. The circulating supply data and trading volume columns on any crypto table are the quickest way to spot how thin or thick the market for a given asset actually is.

Liquidity and Survivorship: Why Altcoins Behave Differently

Liquidity — how easily an asset can be bought or sold without moving its price — differs dramatically across the altcoin universe. Bitcoin and Ether trade on dozens of major exchanges around the clock with deep order books. A small altcoin might list on one or two minor exchanges, with daily volume (the total amount traded in a day) that could be wiped out by a single large order.

Thin liquidity has real consequences. The bid-ask spread — the gap between what buyers will pay and what sellers will accept — tends to be much wider for small-cap altcoins. Slippage, where a trade executes at a worse price than expected because there are not enough counterparties, is common. And because small markets are easier to move, they are more susceptible to short squeezes and sudden price dislocations.

Volatility also tends to amplify as market size shrinks. Altcoins historically show larger percentage swings than Bitcoin in both directions during market cycles — rising faster in bull runs and falling harder in downturns. The guide on crypto volatility and market cycles covers that pattern in depth.

Suppose a token has a total daily trading volume of $200,000 (a hypothetical example). A single trader wanting to sell $50,000 worth — one quarter of the entire day's volume — would almost certainly move the price noticeably. The same trade in Bitcoin would be invisible.

Market Cap, Dominance and Where Altcoins Fit

Market capitalization — price multiplied by the number of coins or tokens in circulation — is the standard way crypto tables rank assets. Bitcoin's share of the total crypto market cap is called Bitcoin dominance. When dominance falls, it often means capital is rotating into altcoins; when it rises, the opposite is happening. Traders and analysts watch this ratio as a rough sentiment gauge for the broader altcoin market.

Understanding how market cap is calculated — and what it can and cannot tell you — is essential context for reading any altcoin table. The guide on crypto market cap and dominance walks through the mechanics, including why a token with a low price per coin is not necessarily cheap and why fully diluted valuation (the market cap if every token that will ever exist were already in circulation) sometimes paints a very different picture than circulating supply alone.

Reading an Altcoin Table: What the Columns Mean

When you look at a live crypto price table, the most useful columns are not the raw price — that number tells you very little on its own. The percentage-change columns (day, week, month, year-to-date, year-over-year) show how an asset is moving relative to its own recent history. A coin priced at a fraction of a cent is not "cheap"; it may simply have a very large supply. See how to read percentage moves for a full breakdown of what each column actually measures.

Volume and open interest (the total number of outstanding derivative contracts on an asset) are secondary signals worth checking. High volume relative to market cap suggests genuine trading activity; very low volume on a coin with a large listed market cap can be a warning sign that the price is not well-tested by real buyers and sellers.

Altcoins are also worth understanding in the context of the broader /crypto ecosystem alongside stablecoins — assets designed to hold a fixed value — which sit in their own category and are covered separately in the stablecoins guide.