What are Altcoins?

In 2013, two software engineers built a cryptocurrency as a joke. They took the Shiba Inu dog from a popular internet meme, slapped it on a Bitcoin clone, and called it Dogecoin. There was no business plan, no whitepaper promising to revolutionize finance, no roadmap. It existed to make fun of how seriously people took crypto.

Eight years later, a single tweet from Elon Musk could move its price 20% in an hour. At its 2021 peak, this joke was worth more than $80 billion — larger than Ford, larger than Marriott, larger than most companies in the S&P 500. People who bought $100 of it as a laugh briefly held five figures.

Dogecoin is an altcoin — and its absurd story captures everything that makes the altcoin universe thrilling and dangerous at once. This is a world where a meme can out-value a century-old automaker, where a genuinely brilliant technology can lose 95% of its value, and where the difference between the two is not always obvious from the price chart.

To trade altcoins without getting wrecked, you need a map. This lesson is that map.

The term "altcoin" is short for "alternative coin" — and it means exactly what it sounds like: every cryptocurrency that isn't Bitcoin. Ethereum is an altcoin. Solana is an altcoin. The dog coin someone launched at 2 AM with a copy-pasted logo and zero utility is also an altcoin. The category stretches from $300 billion infrastructure projects all the way down to tokens worth less than a used car.

The name carries a piece of history. Bitcoin was the original cryptocurrency, the one that proved a digital, decentralized currency could work. Everything that came afterward was an "alternative" to it — hence the label. Many early altcoins were literally forks of Bitcoin's code: developers copied its open-source software, changed a few parameters (faster blocks, a different mining algorithm, a larger supply), and launched a new chain. Litecoin, Bitcoin Cash, and Dogecoin all trace their lineage back to Bitcoin in exactly this way.

The scale today is staggering. Tracking sites like CoinGecko and CoinMarketCap list well over 14,000 cryptocurrencies, and the true number — counting dead and abandoned projects — runs into the millions. Bitcoin's market dominance, its share of total crypto market value, swings between roughly 40% and 65% depending on the cycle. The remaining slice belongs to the altcoins.

Lumping all altcoins together is like lumping Amazon, a corner bakery, and a Ponzi scheme together because they're all "businesses." The categories matter because each one carries a fundamentally different risk profile and a different source of value. There are two useful ways to sort them: by how the chain reaches agreement (its consensus mechanism) and by what the token is actually for (its function). Function is the more practical lens, so we'll lead with it.

Payment coins. These exist primarily to move value from one person to another — digital cash. Litecoin, Bitcoin Cash, and Dogecoin live here. They compete on speed and low fees rather than smart-contract features. They're conceptually the simplest altcoins because they're trying to do the one thing Bitcoin already does.

Layer 1 platforms. Ethereum, Solana, Avalanche, and Cardano are base-layer blockchains competing to be the infrastructure that everything else gets built on. Their tokens pay for "gas" (transaction fees), secure the network through staking, and accrue value as more applications and users arrive. These are the closest thing crypto has to blue chips — if blue chips could routinely lose 80% in a bear market.

Utility and infrastructure tokens. LINK (Chainlink), FIL (Filecoin), and RNDR (Render) power specific services. Chainlink's oracle network feeds real-world data to smart contracts; Filecoin pays for decentralized storage; Render pays for distributed GPU power. The token is the access pass or the fuel for the service, which gives these projects identifiable usage metrics you can actually study.

Governance tokens. UNI, AAVE, and MKR give holders the right to vote on how a protocol is run — fee levels, treasury spending, upgrades. Owning the token is like owning shares with voting rights but (usually) no guaranteed dividend. Their value is tied to the protocol's usage; Uniswap has generated billions in cumulative fees, though whether UNI holders capture that value is an ongoing governance debate.

Stablecoins. USDT, USDC, and DAI are pegged to a reference asset, almost always the US dollar. They're technically altcoins, but they behave nothing like the rest of the category — their entire job is to not move in price. They're the cash register of crypto, and they get their own dedicated lesson.

Meme coins. DOGE, SHIB, PEPE, and WIF have no protocol revenue, no technological moat, and often no roadmap at all. Their value is pure social coordination — attention, community, and momentum. This makes them simultaneously the easiest to dismiss and the hardest to ignore, because every cycle a few of them mint overnight millionaires before collapsing.

If Bitcoin already works, why are there 14,000 alternatives? Because Bitcoin was designed to do one thing extremely well — be a secure, decentralized store of value — and it deliberately sacrifices almost everything else to do it. Altcoins exist to fill the gaps Bitcoin leaves open.

• Programmability. Bitcoin's scripting language is intentionally limited. Ethereum's founders wanted a blockchain that could run arbitrary code — smart contracts — so they built one. Every lending protocol, NFT marketplace, and on-chain exchange in existence is downstream of that single decision to make the chain programmable.
• Speed and cost. Bitcoin's base layer confirms only a handful of transactions per second, and fees spike when it's busy. Solana, Avalanche, and others traded away some decentralization for throughput, processing thousands of transactions per second at a fraction of a cent each.
• Specialized jobs. Some problems need a purpose-built token: stablecoins for price stability, privacy coins like Monero for confidential payments, oracle tokens like Chainlink for getting real-world data on-chain. Bitcoin was never going to do these jobs, so new chains were born to do them.

The flip side of all this innovation is that most of it fails. Building a better blockchain is genuinely hard, and "we're faster than Ethereum" is a claim thousands of projects have made and almost none have delivered on. The freedom to launch any token you want means the market is flooded with experiments — a handful of which become the next Ethereum, and the vast majority of which become tomorrow's dead links.

Once you can name the categories, the next thing to understand is how money moves between them. The single most useful macro indicator for altcoin traders is Bitcoin dominance — BTC's share of total crypto market cap. The pattern it traces has repeated across every cycle since 2017.

During bear markets and early recoveries, capital concentrates in Bitcoin. Dominance climbs from the low 40s toward 60%+. New institutional money tends to enter through BTC-first vehicles (ETFs, futures, large custodians) because Bitcoin is the most legible, least risky crypto asset. In this phase, altcoins bleed against both the dollar and against Bitcoin.

In late bull markets, dominance drops sharply. Retail arrives, risk appetite expands, and money rotates from BTC into ETH, then into large-cap alts, then into small caps and meme coins. This downhill cascade is what traders call "alt season." It played out in early 2018, again in early 2021, and its early signals reappeared in late 2024.

The cycle isn't a law of physics, but the incentive structure behind it hasn't changed: new money enters through Bitcoin because it's the safest on-ramp, and as conviction builds, that money migrates down the risk curve in search of bigger returns. Watching dominance tells you roughly where in that rotation the market currently sits — and therefore whether you're early, late, or dangerously late to the altcoin party.

Altcoins offer the possibility of outsized returns. They also carry risks that Bitcoin simply doesn't — and honest education means naming every one of them.

• Most of them go to zero. This isn't pessimism; it's the historical record. Of the roughly 5,000 tokens launched during the 2017 ICO boom, the large majority have lost more than 95% of their value, and many are completely dead — no developers, no volume, no community. The graveyard dwarfs the survivors.
• Brutal volatility and thin liquidity. A small-cap altcoin can drop 50% in a day on no news at all. Because far less money trades them than Bitcoin, a single large seller can crater the price — and when you try to exit during a panic, there may be no buyers on the other side.
• Insider supply and unlocks. Many projects keep huge allocations for founders and early investors that vest over 2-4 years, creating relentless sell pressure. A token with a $500M market cap but only 10% of supply circulating has billions of dollars of future selling waiting to hit the market the moment those unlocks arrive.
• Scams, rugs, and pump-and-dumps. Anyone can launch a token in minutes. "Rug pulls" (developers drain the liquidity and vanish) and coordinated pump-and-dumps are routine, especially among meme coins and freshly launched projects with anonymous teams.
• Regulatory and security-law risk. Regulators in several jurisdictions argue that many altcoins are unregistered securities. A single enforcement action or exchange delisting can erase liquidity overnight, in a way that almost never threatens Bitcoin.

If you've decided to venture beyond Bitcoin, a little discipline goes a long way. Before touching any altcoin, check whether the project has real usage — on-chain metrics like daily active addresses, protocol revenue, and developer activity are far harder to fake than a follower count. Read the token unlock schedule to know when insider supply hits the market. And look at the float: how much of the total supply is actually circulating versus locked up and waiting to be sold.

GaiaEx is built so that the infrastructure never adds risk on top of the risk you're already taking on the asset itself:

Spot and perpetual markets. Altcoins are available both for direct ownership (spot) and for leveraged trading (perpetuals), executed on Hyperliquid L1 with sub-second finality — so your fills are fast and settle on-chain immediately, even when the market is moving violently.

Non-custodial by design. When altcoins crash, the first thing centralized exchanges tend to freeze is withdrawals — trapping your funds at the exact moment you want out. On GaiaEx, your wallet is yours. MPC key security splits your private key into encrypted shards so no single party ever holds it, which means there's no central custodian who can lock you out or lose your coins.

Multi-chain access. Altcoins live on many different blockchains — Ethereum, Solana, Arbitrum, BNB Chain, TRON. GaiaEx connects to all of them through one interface, so you can move across ecosystems without juggling a dozen wallets.

None of this makes altcoins safe — nothing can. What it does is remove the extra dangers of custody and slow settlement, so the only risk left is the one you actually chose to take: the asset itself.