A stablecoin is a type of cryptocurrency created to remain stable in value. Specifically, a stablecoin's value is usually pegged to that of another asset, such as the US dollar. That way, it can maintain a fixed worth. For example, popular stablecoins like Tether (USDT) and USDC were designed so that one token would always equal roughly one US dollar.
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This video explains the basics of stablecoins in a beginner-friendly manner. It also dives a bit deeper into the larger stablecoin landscape, detailing, for instance, the many stablecoins backed by fiat currency other than the US dollar, like the euro, the Turkish lira, and the Singapore dollar.
Stablecoins are a class of cryptocurrencies that aim to offer investors price stability, either by being backed by specific assets or by adjusting their supply in response to demand.
Because stablecoins operate on public blockchains, transfers can occur nearly instantly without intermediaries, unlike traditional credit card networks. This has fueled stablecoins' adoption within the crypto world and in cross-border payments. Stablecoin transfer volume rose from $3.3B in 2018 to $18.4T in 2024, overtaking Visa's $15.7T and Mastercard's $9.8T.
The largest stablecoin by market cap, Tether (USDT), as well as the second largest, USDC, are both pegged to the US dollar. As of April 2026, Tether had a roughly $184B market cap.
While Tether (USDT) is primarily backed by US Treasury bills (64.9%), USDC is mostly backed by US Treasury repurchase agreements (49.6%). USDC also goes by the name Circle, given that it is owned by the company Circle Internet Financial.
One of the world's largest stablecoin's reserves were held at Silicon Valley Bank, which famously failed in March 2023. USDC briefly lost its peg to the US dollar for a time as a result, within investors pulling out billions of dollars.
That coin was Tether, also known as USDT. Other key dates in stablecoin history include Circle's launch of USDC in 2018, and, more recently, President Donald Trump's signing of the GENIUS Act in 2025.
GENIUS stands for the "Guiding and Establishing National Innovation for US Stablecoins." The GENIUS Act defines payment stablecoins as digital money rather than investments and was the first significant piece of stablecoin legislation in the United States.
Specifically, the stablecoin market grew from about $28B in 2020 to $282B in 2025. Some experts forecast that it could grow anywhere from 6.7x to 14.2x by 2030.
Specifically, stablecoins could provide a way to make sure these funds remain valuable during times of volatility. Some examples of people without access to the US dollar using stablecoins as a store of value have been observed in Venezuela.
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