What are stablecoins, major coins, and altcoins

Stablecoins: Definition and Classification

Stablecoins are cryptocurrencies with an inherent “pegged” property. They are usually anchored to fiat currencies such as the US dollar or other stable-value assets, which keeps their prices from experiencing sharp fluctuations. Stablecoins serve primarily as a medium of exchange and act as a critical bridge within the crypto asset ecosystem. The first stablecoin, USDT (Tether), was launched by Tether Limited in 2014 and maintains a 1:1 peg with the US dollar, offering the crypto market a reliable value reference.

Given the significant volatility of crypto assets, investors need a relatively stable bridge currency to preserve on-chain asset value during trades. For example, with the BTC/USDT trading pair, if investors anticipate a drop in Bitcoin’s price, they sell BTC for USDT to protect their holdings’ value. This mechanism makes stablecoins an essential foundation for the crypto market, providing investors with a vital risk management tool.

Stablecoins are generally divided into two main categories: collateralized stablecoins and algorithmic stablecoins.

Collateralized stablecoins are backed by assets to guarantee the token’s value stability. Based on the type of collateral, they can be further classified as:

• Fiat-Collateralized Stablecoins: Backed by fiat currency reserves, these coins are issued at a 1:1 ratio. Notable examples include USDT, TUSD, and USDC, which maintain value by holding equivalent fiat reserves.

• Crypto-Collateralized Stablecoins: Backed by crypto assets, such as DAI. These stablecoins use over-collateralization to maintain price stability and serve as a key pillar of the DeFi ecosystem.

Algorithmic stablecoins are an innovative category that requires no collateral or asset backing. They use programmed algorithms to autonomously implement monetary policy, adjusting token supply via contraction or expansion to maintain a stable price. Representative algorithmic stablecoins include UST, BAC, and AMPL. These coins rely on smart contracts to balance supply and demand in real time, seeking price stability without the need for collateral.

Major Cryptocurrencies: Definition and Examples

Top-ranked crypto assets by market capitalization are commonly referred to as major coins. These coins are characterized by large, active communities, high user counts, strong market activity, and robust liquidity. Major cryptocurrencies are widely recognized due to their established consensus or practical utility, giving them greater risk resistance and investment appeal.

Leading examples include BTC, ETH, ADA, XRP, BCH, and LTC. Bitcoin (BTC) stands as the benchmark, holding the number one spot by market cap since its launch in 2009. In most scenarios, Bitcoin sets the market direction: when Bitcoin rises, other major coins usually follow, and when it falls, others tend to decline as well. This correlation underscores Bitcoin’s pivotal role in the crypto industry.

Ethereum (ETH) is the native token of the Ethereum network, also called Ether. Developed by Vitalik Buterin, who was inspired by Bitcoin, Ethereum was designed to enhance transaction speeds and enable a broader range of use cases through smart contracts. It is the second largest cryptocurrency by market cap and has pioneered new applications for blockchain technology.

Cardano (ADA), sometimes called the “Japanese Ethereum,” gained much of its initial funding from Japan, and its founder Charles Hoskinson was a co-founder of Ethereum. Cardano uses a distinct technical architecture aimed at solving blockchain scalability and interoperability challenges.

XRP is the native asset of the Ripple network, issued by Ripple Labs (formerly OpenCoin), with a total supply of 100 billion. It aims to become the standard protocol for global banking, allowing for low-cost, rapid money transfers much like sending an email. XRP was designed to provide efficient cross-border payments for traditional financial institutions.

Bitcoin Cash (BCH) was launched in December 2017 as a result of a Bitcoin hard fork. By increasing block size, BCH can process more transactions, speeding up transfers and addressing Bitcoin’s network congestion issues.

Litecoin (LTC) was also created by a developer inspired by Bitcoin. Like Bitcoin, Litecoin uses proof-of-work and has been a major cryptocurrency since 2011, backed by a long-standing community and a solid track record.

Altcoins: Concept and Market Performance

Altcoins originally referred to digital currencies created as alternatives to Bitcoin. Over time, the line between major coins and altcoins has blurred. For example, Litecoin was initially considered an altcoin because it was inspired by Bitcoin, but as its market position strengthened, this label faded.

Dogecoin (DOGE), launched in 2013, also exemplifies this shift. Despite its long history, DOGE was classified as an altcoin for years due to its low price and market cap. However, after high-profile endorsements—including from Elon Musk—Dogecoin’s price surged and its market cap entered the global top ten. Since its price is largely driven by short-term sentiment, whether DOGE is an altcoin or a major coin remains debatable.

It’s important to clarify that altcoins are not fake or illegitimate—they are real crypto assets built on blockchain technology. However, compared to major coins, altcoins tend to have less recognition and liquidity. They typically exhibit greater price volatility, which can also mean larger opportunities and risks.

With ongoing market evolution and shifting capital, each cycle brings new “star altcoins.” Recent popular altcoins include animal-themed tokens—a trend ignited by Dogecoin’s rally—such as SHIB (Shiba Inu), SDOG (Small Dog), AKITA (Akita Inu), and PIG. DeFi-related altcoins and NFT-themed altcoins have also stayed in the spotlight, drawing significant investor interest.

Conclusion

As the market evolves, top major coins can lose prominence if they fail to keep pace with industry changes, lag in technology, or become conceptually outdated. In contrast, altcoins with technological breakthroughs or innovative applications may advance to become major coins. Ultimately, these changes depend on investor recognition and the real-world value of each asset.

Investors should thoroughly evaluate the value proposition, technical capabilities, team credentials, and market acceptance of any asset before investing. Making rational, long-term assessments—rather than following hype—leads to wiser decisions in a market full of both opportunities and risks.

FAQ

What is a stablecoin? What are the main stablecoins?

A stablecoin is a cryptocurrency pegged to the value of fiat currencies or commodities, designed to keep its price stable. The main stablecoins are USDT, USDC, DAI, and BUSD, with USDT and USDC (both pegged to the US dollar) being the most widely used.

How do stablecoins, major coins, and altcoins differ?

Stablecoins have stable prices and are pegged to assets like the US dollar, making them ideal for value preservation and transactions. Major coins are high-market-cap crypto assets with strong consensus and liquidity—examples include BTC and ETH. Altcoins have lower recognition and liquidity, but are also blockchain-based and may later become major coins as the market develops.

Which coins are considered major coins? Why are Bitcoin and Ethereum classified as major coins?

Major coins include BTC, ETH, ADA, XRP, LTC, and others. Bitcoin and Ethereum are classified as major coins because they have the largest market caps, expansive communities, high user counts, large trading volumes, and strong market activity. Bitcoin is the market’s leading indicator, and Ethereum powers smart contract applications—both enjoy broad consensus and real-world use.

What are altcoins? What risks do altcoins carry?

Altcoins are cryptocurrencies that imitate major coins but lack their legitimacy and stability. Key risks include high price volatility, project fraud, technical vulnerabilities, low liquidity, and market manipulation. Investors should rigorously evaluate project fundamentals and team backgrounds before investing.

How can you distinguish a major coin from an altcoin?

Major coins typically have high market caps, large trading volumes, and broad recognition—such as Bitcoin and Ethereum. Altcoins have lower market caps, less trading activity, and less brand awareness. The main indicators are industry acceptance, technical maturity, and community engagement.

How do stablecoins work? What’s the difference between USDT and USDC?

Stablecoins maintain a 1:1 peg with fiat currencies to ensure price stability. USDT is issued by Tether and backed by diversified reserves including government bonds and precious metals, making it highly liquid. USDC, issued by Circle, is fully backed by cash and short-term US Treasuries. USDC offers greater regulatory transparency and is more widely accepted in the US and European markets.

Which carries more risk: investing in altcoins or major coins?

Altcoins present higher risks. They typically lack liquidity, face extreme price swings, and often have questionable legitimacy, leaving them more exposed to market manipulation and fraud. Major coins, with higher trading volumes, greater acceptance, and established ecosystems, are relatively less risky.

Why are stablecoins necessary? What roles do they play?

Stablecoins are pegged to assets like the US dollar to maintain price stability. Their core roles include enabling fast, low-cost cross-border payments (with transaction fees as low as a few cents), preserving value against inflation, facilitating yield generation through DeFi, and making global asset allocation more accessible.