I just reviewed something that many still underestimate in the crypto world: stablecoins. And the truth is they deserve much more attention than they get, especially if you want to understand how the ecosystem really works.

Stablecoins are basically cryptocurrencies designed to maintain a fixed value. Unlike Bitcoin or Ethereum, where the price fluctuates drastically from one day to another, a stablecoin stays stable because its value is linked to something concrete, usually the US dollar. Think of them as digital dollars. USDT, USDC, DAI — all of these keep their price close to 1 dollar because they have real backing.

Now, not all work the same way. There are stablecoins backed by actual dollars in bank accounts (like USDT and USDC), others linked to physical gold (PAXG or XAUT), some collateralized with cryptocurrencies (DAI requires depositing ETH in MakerDAO), and algorithmic ones that use smart contracts without traditional backing. Each has its logic.

Looking at the current market, USDT still dominates with a market capitalization of 189.58 billion dollars. It’s the most adopted stablecoin, period. USDC follows with 76.52 billion, and it’s the favorite choice for those seeking more regulation and transparency. Then there’s DAI with 4.37 billion, which is interesting because it’s completely decentralized. Ethena’s USDE has 4.45 billion and combines stability with yield generation, making it attractive for those wanting more than just preserving value.

If I had to recommend which to use depending on what you’re looking for: if you want regulatory security and maximum adoption, USDC is your choice. If decentralization and DeFi are your priorities, DAI is the way. If you want to move quickly between Asian exchanges, FDUSD is practical. And if you want to experiment with yield while maintaining stability, USDE is worth exploring.

What I find important to highlight is why stablecoins matter so much. First, the price is predictable. You don’t wake up and find your capital has evaporated. Second, transfers are instant and cheap; sending USDT across the world costs cents. Third, they operate 24/7 without border restrictions. Fourth, they are widely accepted on exchanges, so converting them to other cryptos or fiat money is simple. And fifth, they are key tools for risk management in volatile portfolios.

Regarding use cases, the most obvious is as a bridge between traditional money and crypto. You sell Bitcoin, don’t want to convert to fiat yet, enter USDT or USDC, preserve value, and then decide where to reinvest. They’re also lifesavers in countries with uncontrolled inflation, like Argentina or Venezuela, where people prefer to store savings in stablecoins that don’t constantly lose value. Remittances are another clear case, especially in Latin America where many families depend on money from abroad. And in DeFi, they are fundamental for accessing loans, earning interest in protocols like Aave, or simply having liquidity without intermediaries.

The reality is that stablecoins won’t make you rich, but they are serious financial tools that should be in any balanced crypto portfolio. Especially now that regulators in the US and Europe are preparing to regulate them formally. Their utility is undeniable, so ignoring them is ignoring one of the most stable parts of the ecosystem.