Most cryptocurrencies are volatile by design. Stablecoins are the exception. They are digital assets built to hold a consistent value relative to an external reference — most commonly the US dollar — and they have become the foundational liquidity layer of the entire DeFi ecosystem.
As of 2025, stablecoins collectively represent approximately $300 billion in market capitalisation. Nearly every DeFi strategy, lending market, and yield vault denominates performance and holds reserves in stablecoins. Understanding what they are and how they work is essential for anyone participating in onchain finance.
How stablecoins maintain their peg
There are three main approaches to maintaining a stable value.
Fiat-collateralised stablecoins are backed 1:1 by offchain reserves held at regulated financial institutions — typically cash, cash equivalents, or short-term US Treasuries. USDC, issued by Circle, is the clearest example. Each token is redeemable for one US dollar, and the redemption mechanism is what keeps the market price anchored. These are the most widely used stablecoins in institutional and DeFi contexts.
Crypto-collateralised stablecoins are backed by onchain assets. Because crypto assets are volatile, these systems require overcollateralisation: a user might deposit $150 worth of ETH to mint $100 worth of stablecoin. Smart contracts enforce solvency automatically. If collateral value falls below a required threshold, liquidation mechanisms activate to protect the peg. USDS, issued by Sky, operates on this model.
Algorithmic and hybrid stablecoins use supply-adjustment mechanisms, partial collateral, or market incentives to maintain price stability. Pure algorithmic designs contract or expand supply based on price deviations. Hybrid models combine partial collateral with algorithmic controls. These approaches carry higher risk, as demonstrated by the collapse of TerraUSD in 2022, which wiped out tens of billions in value within days of its depeg.
What stablecoins are used for
DeFi liquidity. Stablecoins are the base layer of onchain markets. They serve as collateral for lending and borrowing, base pairs on decentralised exchanges, and the denomination currency for yield strategies. Without deep stablecoin liquidity, most DeFi protocols could not function.
Yield generation. Stablecoin deposits earn yield through lending demand, liquidity provision, and active strategy management. Because the principal holds its value relative to the dollar, stablecoin yield strategies offer a different risk profile than strategies involving volatile assets. Returns are measured without exposure to underlying token price movements.
Payments and settlement. Stablecoins enable instant, low-cost international transfers without the delays associated with traditional banking. Ninety percent of financial institutions surveyed by Fireblocks are actively exploring or using stablecoins for payments, settlement, or onchain operations.
Treasury management. DAOs, crypto-native funds, and increasingly traditional companies hold stablecoin reserves as a liquid, yield-bearing alternative to idle fiat. UFarm.Digital vaults focused on stablecoin strategies serve exactly this use case: deploying stable capital across professional-grade yield strategies without exposure to directional market risk.
Stablecoin risks
Depeg risk. The most consequential risk is a stablecoin losing its peg. This can occur through insufficient reserves, a bank-run scenario where redemptions exceed available liquidity, or failure of an algorithmic mechanism. Once a stablecoin depegs significantly, recovery is rare.
Counterparty and reserve risk. Fiat-backed stablecoins depend on the issuer holding adequate reserves and operating transparently. Opacity around reserves has historically preceded confidence crises. Regulatory frameworks like the US GENIUS Act, enacted in 2025, now require monthly independent reserve attestations from issuers to address this.
Centralisation risk. Some stablecoin issuers can freeze tokens at specific wallet addresses. For users interacting with these assets in DeFi, this introduces a centralised point of control that smart contract architecture alone cannot eliminate.
Smart contract risk. Crypto-collateralised and algorithmic stablecoins depend entirely on the correctness of their smart contract logic. A vulnerability in the liquidation mechanism or price feed can compromise the entire system.
Stablecoins and UFarm
UFarm.Digital vaults that operate with stablecoin strategies are designed to generate yield on dollar-denominated capital without taking on directional market exposure. The Maneki Lotus USD Yield vault, for example, deploys USDT and USDC across Curve and Pendle strategies with individual protocol and stablecoin whitelisting, 24/7 monitoring, and emergency exit procedures via multisig.
Every stablecoin used within UFarm vaults is individually assessed before being approved for strategy use. The goal is to avoid concentration in any single stablecoin and to maintain exposure only to assets with transparent reserves and sufficient liquidity depth.
For investors seeking yield without equity-like volatility, stablecoin vaults represent the most direct entry point into professional onchain asset management.
The bottom line
Stablecoins solved one of the fundamental problems of crypto: how to hold and transfer value on a blockchain without exposure to price volatility. They are now the connective tissue of DeFi, enabling lending, trading, yield generation, and settlement at scale.
Choosing which stablecoins to trust requires understanding what backs them, who issues them, and what mechanisms keep their value stable. These questions matter as much for individual investors as they do for the professional managers deploying capital on their behalf.
→ Explore stablecoin vaults on UFarm: black.ufarm.digital
