What Is a Stablecoin?

By the OSL-TRADE Research Team · 6 July 2026 · 6 min read

If you have ever moved funds between two exchanges, parked profits without cashing out to a bank, or paid a supplier on the other side of the world, you may have used a stablecoin without giving it much thought. Stablecoins are the quiet plumbing of digital finance — tokens designed to hold a steady value while the assets around them swing. This guide explains what they are, how they keep their price, where they are used, and the risks worth understanding.

What is a stablecoin?

A stablecoin is a digital token engineered to track the value of a reference asset — most often a national currency such as the US dollar. One unit is intended to be worth roughly one dollar at all times, whether the wider crypto market is rising or falling. That predictability is the whole point: it lets people hold, send and settle value on a blockchain without the volatility that defines assets like Bitcoin or Ethereum.

Because they live on public networks, stablecoins move around the clock, settle in minutes rather than days, and can be built directly into applications. In effect they combine the familiarity of the dollar with the speed and openness of crypto rails.

The main types of stablecoin

Not every stablecoin holds its peg the same way. Three broad designs dominate the market, and the differences matter.

Fiat-backed stablecoins are the most common. For every token in circulation, the issuer holds an equivalent value of cash and short-term government securities in reserve. Tokens such as USDT, USDC and OSL-TRADE's own USDGO fall into this group. The promise that a token can always be redeemed for a real dollar is what anchors its price.

Crypto-backed stablecoins are collateralised by other digital assets locked in smart contracts. Because that collateral is itself volatile, these systems are deliberately over-collateralised: a user might lock $150 of crypto to mint $100 of stablecoin, leaving a buffer against sudden price moves.

Algorithmic stablecoins take a different route, using code and market incentives to expand or contract the token supply and steer the price toward its target. They hold little or no hard collateral, which historically has made them the most fragile of the three designs.

A stablecoin is only as trustworthy as the reserves and the rules that stand behind it. The design, not the label, determines the risk.

How the peg holds

Keeping a token at one dollar is a continuous balancing act. For fiat-backed coins the core mechanism is arbitrage. If the price drifts below a dollar, traders buy the discounted token and redeem it with the issuer for full value, nudging the price back up. If it trades above a dollar, new tokens are minted and sold into the demand. Transparent reserves and regular third-party attestations give the market confidence that those redemptions will always be honoured.

Crypto-backed and algorithmic models lean instead on liquidation engines, incentives and deep liquidity across many venues. When any of those levers weakens, a coin can “de-peg” — trade meaningfully away from its target — as several designs have done during periods of market stress.

What stablecoins are used for

Stablecoins have grown well beyond a trading convenience. Traders use them as a home base, rotating in and out of positions without touching a bank. Businesses use them for cross-border payments and supplier settlement, sidestepping slow correspondent-banking chains. Merchants accept them at checkout and settle instantly, while corporate treasuries hold them to keep working capital liquid and productive. On OSL-TRADE, stablecoins sit at the centre of fiat on- and off-ramps, business payments and yield products.

Risks to understand

Stable does not mean risk-free. Reserve quality matters — a fiat-backed coin is only as sound as the assets behind it and the issuer holding them. Regulatory treatment continues to evolve from one jurisdiction to the next. And no peg is ever fully guaranteed: under extreme conditions even well-run stablecoins can trade briefly away from their target. Knowing which type of stablecoin you hold, and who stands behind it, is the best protection you have.

This article is general information, not financial or investment advice. Stablecoins are not risk-free and their value can move away from the intended peg. Prices of virtual assets can be volatile. Consider your own circumstances and risk tolerance before trading or holding any digital asset.