What are Altcoins? The Complete Guide for 2026
Bitcoin came first and everything that followed is an altcoin. The category is enormous, ranging from Ethereum, which underpins most of decentralised finance, to meme coins that vanish within weeks of launch.
This guide explains what altcoins are, why they exist, the main types, how they differ from Bitcoin, and the risks you need to understand before putting any money into them.
What is an Altcoin?
The word altcoin is short for alternative coin. It refers to any cryptocurrency that is not Bitcoin.
Bitcoin was the first cryptocurrency, launched in 2008. In the years that followed, developers began building other cryptocurrencies for different purposes, with different designs, different consensus mechanisms, and different goals. Those cryptocurrencies came to be known collectively as altcoins.
The category includes everything from Ethereum, a programmable blockchain with a market cap of hundreds of billions of dollars, to tokens that exist only to fund a meme and disappear within a week. Altcoin is a broad term and the range of what it describes is enormous.
Why do Altcoins Exist?
Bitcoin was designed to do one thing: transfer value without a central authority. It does that extremely well. But its design makes it poorly suited to other purposes.
Bitcoin's scripting language is intentionally limited. It does not support complex applications. It processes roughly seven transactions per second. It has no native mechanism for running programmes.
Developers who wanted to build other things on blockchain technology, such as smart contract platforms, stablecoins, or decentralised applications, had to build new blockchains to do it. Ethereum was built specifically to be a programmable blockchain that could run any application, not just value transfers.
Other altcoins were built to improve on Bitcoin in specific ways: faster transactions, lower fees, better privacy, or higher throughput. Some were built to serve a specific community or use case. Some were built for no serious purpose at all.
The Main Types of Altcoins
Layer 1 Blockchains
These are base-layer blockchains that compete with or complement Ethereum as programmable platforms. Examples include Solana (SOL), Avalanche (AVAX), Cardano (ADA), and BNB Chain. Each makes different tradeoffs between decentralisation, speed, and security.
Layer 2 Networks
Layer 2 networks are built on top of Ethereum to increase its capacity and reduce its transaction costs. Transactions happen off the main chain, with security inherited from Ethereum below. Examples include Arbitrum, Optimism, and Polygon. Many Layer 2 networks have their own native tokens.
Stablecoins
Stablecoins are cryptocurrencies designed to maintain a stable value, typically pegged to the US dollar. They are technically altcoins but serve a different function. Rather than being held as an investment, they are used as a stable medium of exchange or a way to hold dollar value without leaving the crypto ecosystem. Examples include USDC, USDT, and DAI.
Utility Tokens
Utility tokens grant access to a specific service or function within a blockchain ecosystem. For example, the native token of a blockchain network is typically used to pay transaction fees on that network. Without the token, you cannot use the network. The value of utility tokens is theoretically linked to demand for the underlying service.
Governance Tokens
Some decentralised protocols issue governance tokens that give holders voting rights over decisions about the protocol. Token holders can vote on proposals that affect fees, protocol upgrades, or treasury spending. Examples include UNI (Uniswap), AAVE (Aave), and MKR (MakerDAO).
Memecoins
Memecoins are cryptocurrencies with no fundamental utility, typically created around an internet meme or cultural moment. Dogecoin was the first. It was created in 2013 as a joke. It later became one of the largest cryptocurrencies by market cap. Shiba Inu and Pepe followed a similar pattern.
Memecoins are driven almost entirely by community sentiment and speculation. They can produce enormous returns and total losses in very short timeframes. Most do not survive beyond a few months.
How Altcoins Differ from Bitcoin
| Bitcoin | Most Altcoins | |
|---|---|---|
| Purpose | Store of value. Peer-to-peer payments. | Varies widely. Platforms, apps, stablecoins, speculation. |
| Supply | Fixed at 21 million. Cannot be changed. | Varies. Many have no fixed cap. |
| Track record | Over 15 years without a protocol-level attack. | Most are younger with shorter track records. |
| Decentralisation | Highly decentralised. No single controlling party. | Varies. Some are highly centralised. |
| Liquidity | Deepest liquidity of any cryptocurrency. | Varies enormously. Many have very thin markets. |
| Volatility | High, but lower than most altcoins. | Typically much higher. Some move 90%+ in days. |
How to Evaluate an Altcoin
Not all altcoins are worth evaluating. Many are not serious projects. For those that are, the following questions are a useful starting framework.
What does it actually do?
Can you explain in one or two sentences what the network or token does and why it matters? If the answer is vague or relies entirely on price speculation, that is a significant warning sign.
Who built it and are they public?
Anonymous teams are not automatically a red flag. Satoshi Nakamoto was anonymous. But anonymous teams in newer projects can more easily walk away with funds. Understanding who is behind a project, their background, and their track record matters.
What is the token supply and distribution?
How many tokens exist? Is there a maximum supply? How many tokens did the founding team and investors receive, and when do those unlock? A project where insiders hold 60% of the supply and those tokens unlock in six months is a very different risk profile from one with a broad, transparent distribution.
Is there real usage?
Look at on-chain data. Are people actually using the network? Is transaction volume growing or declining? Is total value locked in DeFi protocols built on it growing? Price alone tells you what people are paying. On-chain data tells you whether people are using it.
What is the competition?
Almost every altcoin operates in a competitive landscape. Understanding what other projects are doing the same thing, and why this one has an advantage, is important before committing capital.
The Risks of Altcoins
Volatility
Altcoins are significantly more volatile than Bitcoin. A 50% decline in a week is not unusual for mid-cap altcoins. Smaller coins can lose 90% or more of their value and not recover. Position sizing matters enormously when trading altcoins.
Liquidity Risk
Many altcoins have thin markets. If you hold a large position in a low-liquidity token and need to exit quickly, you may move the price significantly against yourself. In very small tokens, there may not be enough buyers to exit at any meaningful price.
Project Risk
Altcoin projects can fail for many reasons: running out of funding, losing key developers, failing to achieve adoption, being outcompeted, or encountering regulatory issues. Many altcoins from previous cycles no longer exist or are effectively worthless.
Regulatory Risk
The regulatory status of altcoins varies by jurisdiction and is evolving rapidly. Some tokens have been classified as securities in certain countries, restricting their trading on compliant exchanges. Regulatory changes can affect liquidity and price significantly.
Rug Pulls and Scams
In the altcoin market, scams are common. Developers can create tokens with the ability to drain the liquidity pool, inflate supply, or otherwise steal from holders. Newer, unaudited tokens with anonymous teams carry the highest risk of this.
Key Takeaway
Altcoins are all cryptocurrencies other than Bitcoin. The category includes everything from established Layer 1 blockchains like Ethereum and Solana, to stablecoins, utility tokens, governance tokens, and memecoins. Altcoins exist because Bitcoin's design is intentionally limited, and developers needed different infrastructure to build financial applications, decentralised networks, and other services on blockchain. Most altcoins are significantly more volatile than Bitcoin, carry greater project and liquidity risk, and have shorter track records. Evaluating an altcoin requires understanding what it does, who built it, the token supply and distribution, real-world usage, and the competitive landscape. Many altcoins from previous cycles no longer exist. The ones that survived generally had real utility, credible teams, and actual usage.
Ready to start trading?
Bitval lists a wide range of altcoins for serious traders. Create your free account and explore the markets.
FAQ
What is the difference between a coin and a token?
A coin is a cryptocurrency that operates on its own blockchain. Bitcoin and Ethereum are coins. A token is a cryptocurrency that runs on top of an existing blockchain. Most DeFi tokens are Ethereum-based tokens. In practice, the terms are often used interchangeably, though the technical distinction matters when understanding how a project is structured.
Are altcoins a good investment?
Altcoins carry significantly more risk than Bitcoin, including higher volatility, project failure risk, lower liquidity, and greater exposure to scams. Some altcoins have produced extraordinary returns. Many have gone to zero. Whether altcoins are appropriate for your portfolio depends on your risk tolerance, time horizon, and how much research you are willing to do. This is not investment advice.
What was the first altcoin?
Namecoin, launched in April 2011, is generally considered the first altcoin. It was designed to create a decentralised domain name system. Litecoin followed shortly after and became one of the earliest widely traded altcoins.
What does altcoin season mean?
Altcoin season, sometimes called alt season, refers to a period in the market cycle when altcoins significantly outperform Bitcoin. It typically occurs after Bitcoin has made a substantial move and traders rotate profits into smaller assets seeking higher percentage gains. Altcoin season is not guaranteed to occur in every cycle and does not affect all altcoins equally.
How many altcoins are there?
There are tens of thousands of altcoins in existence across all blockchains. The vast majority are illiquid and inactive. A much smaller number, in the hundreds, have meaningful trading volume and active development. Of those, a smaller number still have significant market caps and long-term relevance.
