What Is a Stablecoin?
A stablecoin is a cryptocurrency designed to maintain a fixed value, usually pegged to the US dollar. Unlike regular crypto assets, stablecoins are intended to hold their value rather than appreciate or depreciate.
How Stablecoins Maintain Their Peg
Most stablecoins use one of three mechanisms. Fiat-backed stablecoins hold an equivalent amount of real-world dollars in a bank account for every token in circulation. USDC and USDT work this way. Crypto-backed stablecoins use overcollateralized crypto deposits to absorb price swings. Algorithmic stablecoins rely on supply and demand mechanisms without direct collateral, a model that has failed catastrophically in notable cases like UST.
Why Stablecoins Matter in Crypto
Stablecoins allow traders to move out of volatile assets without leaving the blockchain. They are the primary unit of account in DeFi: most liquidity pools, lending protocols, and yield products are denominated in stablecoins. They also allow users to hold dollar-equivalent value on-chain without a bank account.
Risks and Limitations
Even “stable” coins carry risk. Fiat-backed stablecoins depend on the issuer holding adequate reserves and staying solvent. Crypto-backed stablecoins can lose their peg if the collateral drops sharply. Algorithmic stablecoins have a history of catastrophic depegging. Regulatory pressure on stablecoin issuers is also an ongoing risk.
A stablecoin is a cryptocurrency pegged to a stable asset, usually the US dollar. It is designed to hold its value rather than fluctuate like regular crypto.
USDC is redeemable 1:1 for US dollars through its issuer, Circle, which holds the backing reserves. It functions like a dollar on-chain but is not legal tender and depends on Circle’s solvency.
Both are dollar-pegged stablecoins, but issued by different companies. USDC is issued by Circle and is generally considered more transparent. USDT is issued by Tether and is the largest by market cap.
Yes. UST, a major algorithmic stablecoin, collapsed to near zero in 2022. Even fiat-backed stablecoins can temporarily depeg during market stress or if questions arise about reserve quality.
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