What Are Stablecoins? ​

A stablecoin is a cryptocurrency asset designed to maintain a stable value relative to a specific reference asset, typically a fiat currency (such as the U.S. dollar or euro), a commodity (such as gold or oil), or a basket of assets. Unlike Bitcoin and Ethereum, whose prices are determined primarily by market supply and demand, stablecoins use various mechanisms to minimize volatility.

Stablecoins have become one of the key components of the cryptocurrency ecosystem. They provide liquidity on exchanges, serve as a unit of account in DeFi protocols, and allow users to "move into cash" without converting back to traditional fiat currency. As of 2025, the combined market capitalization of stablecoins exceeds $230 billion.

Types of Stablecoins ​

There are four fundamentally different mechanisms for maintaining a price peg. Each offers a different balance between reliability, decentralization, and capital efficiency.

1. Fiat-Backed Stablecoins ​

This is the most common type of stablecoin. The issuer maintains reserves in fiat currency (or equivalent assets such as government bonds and bank deposits) on a 1:1 basis with the tokens in circulation.

How It Works:

1. A user deposits $1,000 with the issuer.
2. The issuer mints 1,000 USDC tokens.
3. The reserves are held in a bank account or invested in short-term government securities.
4. When the tokens are redeemed, the issuer returns the corresponding fiat currency.

Advantages: Simplicity, high liquidity, strong peg stability

Disadvantages: Centralization, regulatory risk, reliance on the issuer

2. Crypto-Backed Stablecoins ​

These stablecoins are issued against cryptocurrency collateral with overcollateralization. Because crypto assets are volatile, the collateral value typically exceeds the value of issued stablecoins by 150% or more.

How It Works (Using DAI as an Example):

1. A user locks ETH into a smart contract vault.
2. The protocol issues DAI worth no more than approximately 66% of the collateral value.
3. If the ETH price falls and the collateral ratio drops below the required threshold, the position is liquidated and the collateral is sold to repay the debt.
4. To recover the ETH, the user must repay the borrowed DAI plus the protocol fee (stability fee).

3. Algorithmic Stablecoins ​

Algorithmic stablecoins maintain their peg through supply-management algorithms. They may have little or no direct collateral backing.

Rebasing Mechanism — the protocol automatically increases or decreases the number of tokens held by all users to help stabilize the market price.

Seigniorage Mechanism — a dual-token system consisting of a stablecoin and a governance or reserve token. When demand for the stablecoin rises, new stablecoins are minted and value accrues to holders of the secondary token. When demand falls, the secondary token absorbs losses.

4. Partially Collateralized (Hybrid) Stablecoins ​

These stablecoins combine fiat-backed reserves with algorithmic stabilization mechanisms.

One example is FRAX, where part of the supply is backed by assets such as USDC, while the remainder is supported algorithmically through the FXS governance token.

Comparison of Stablecoin Types ​

Peg Maintenance Mechanism ​

Regardless of their design, all stablecoins rely on arbitrage incentives to help maintain their target price.

When the price is above $1 (e.g., $1.02):

• Fiat-backed stablecoins: the issuer mints new tokens, allowing arbitrageurs to acquire them at $1 and sell them on the market for $1.02.
• Crypto-backed stablecoins: users create new stablecoins by depositing collateral and then sell the newly minted tokens at the higher market price.

When the price is below $1 (e.g., $0.98):

• Fiat-backed stablecoins: arbitrageurs buy discounted tokens on the market and redeem them with the issuer for $1.
• Crypto-backed stablecoins: users purchase discounted stablecoins and use them to repay debt positions, unlocking their collateral at a lower effective cost.

Use Cases of Stablecoins ​

On Exchanges (Cifra X) ​

On Cifra X, stablecoins primarily serve as a settlement currency:

• Trading Pairs — most crypto assets are quoted against USDT or USDC (e.g., BTC/USDT, ETH/USDT)
• Profit Preservation — converting into a stablecoin allows users to exit a volatile position without converting to fiat
• Deposits and Withdrawals — stablecoins can be deposited to and withdrawn from external wallet addresses
• Futures Margin — USDT is commonly used as collateral for derivatives trading

In DeFi ​

• DEX Liquidity — stablecoin-to-stablecoin pools (e.g., Curve) enable low-slippage swaps
• Loan Collateral — users can deposit USDC or DAI to borrow other assets
• Yield Generation — lending stablecoins through lending protocols to earn interest
• Cross-Border Transfers — near-instant USDT and USDC transfers on networks such as Tron and Solana with minimal fees

Key Risks ​

Depegging Risk ​

Depegging occurs when a stablecoin loses its intended price peg. The market has experienced several notable examples:

Regulatory Risk ​

Stablecoins remain a major focus of regulators worldwide. Key developments include:

• United States — federal stablecoin legislation continued to advance in 2025, including the proposed GENIUS Act
• European Union — the MiCA regulatory framework, effective since 2024, introduced licensing requirements for stablecoin issuers
• Address Freezing — issuers such as Tether (USDT) and Circle (USDC) have the technical ability to freeze specific wallet addresses in response to regulatory or legal requests

Smart Contract Risk ​

For crypto-backed stablecoins, vulnerabilities in the protocol's smart contract code may lead to incorrect liquidations or the loss of collateral.

Reserve Risk ​

For fiat-backed stablecoins, the primary risk is insufficient transparency or inadequate reserves. Historically, Tether has faced criticism over the level of disclosure regarding the composition of its reserves.

Stablecoins and Regulation ​

Stablecoin regulation has become a major priority for financial regulators around the world.