Understanding Stablecoins: The Digital Dollar in a Volatile World

Aug 29 / BlockDAG
Stablecoins are mainly used for buying or selling crypto assets, and for making cross-border payments. At the time of writing, according to the Bank for International Settlements, the size of the global stablecoin market is approximately $255 billion as of June 2025, with near 99% of stablecoins pegged to the US dollars.

Case Study - Tether (USDT)Very large text.

What are a stablecoins?

Stablecoins are a type of cryptocurrency designed to maintain a stable value by pegging their worth to an underlying asset, such as fiat currency (like the US dollar), commodities, or a basket of assets. Unlike volatile cryptocurrencies like Bitcoin or Ethereum, stablecoins aim to provide the stability and familiarity of traditional money while leveraging blockchain technology.

Main Types of Stablecoins

  1. Fiat-Collateralized Stablecoins
    These are backed 1:1 by fiat currency held in reserve. They are the most common type and are often regulated to ensure transparency.
    Examples:

    • Tether (USDT)
    • USD Coin (USDC)
    • Binance USD (BUSD)
  2. Crypto-Collateralized Stablecoins
    Backed by other cryptocurrencies rather than fiat. They typically require over-collateralization to account for volatility.
    Examples:

    • Dai (DAI)
    • sUSD
  3. Algorithmic Stablecoins
    Rather than being backed by assets, these rely on algorithms and smart contracts to control supply and demand, maintaining price stability.
    Examples:

    • Ampleforth (AMPL)
    • Terra (LUNA) (though it faced challenges)

Why Are Stablecoins Important?

Stablecoins serve as a bridge between the traditional financial system and the decentralized world. They are crucial for:
  • Remittances and Payments: Faster, cheaper cross-border transactions.
  • DeFi Ecosystems: Lending, borrowing, and earning interest without exposure to volatility.
  • Trading and Arbitrage: Providing a stable trading pair and a safe haven during market turbulence.
  • Financial Inclusion: Offering access to financial services for unbanked population

Disadvantages of Stablecoins

  • Centralization Risks: Fiat-backed stablecoins often rely on centralized entities, posing trust and security concerns.
  • Regulatory Uncertainty: Varies across jurisdictions, leading to potential legal issues.
  • Collateral Management: Crypto-backed stablecoins require complex mechanisms to manage collateralization and liquidation.
  • Potential for Unbacked Issuance: Algorithmic stablecoins can lose their peg if the underlying mechanisms fail.

Regulation of Stablecoins

Regulatory approaches to stablecoins differ globally. Some countries are developing comprehensive frameworks to oversee issuance, reserves, and customer protections — for example, the U.S. Securities and Exchange Commission (SEC) and the Financial Stability Board (FSB) are actively evaluating stablecoin policies. However, the lack of uniform regulation poses challenges for widespread adoption.

Who Benefits from Stablecoins?


  • Traders and Investors: For reducing risk and maintaining liquidity.
  • Remittance Companies: For cost-effective international transfers.
  • DeFi Participants: For earning yields and participating in decentralized finance without volatility concerns.
  • Businesses: For settlement and transactions in a stable medium of exchange.


Overall: Stablecoins offer the benefits of cryptocurrencies without the volatility. You can also use stablecoins to send money globally, at any time of day, without a bank. And since the value doesn't swing, stablecoins work well for payments, payroll, and even holding value in unstable economies.

Case Study: Tether (USDT)

Tether (USDT) is arguably the most well-known stablecoin, pegged to the US dollar on a 1:1 basis. It was launched in 2014 and quickly became popular for its liquidity and widespread adoption across crypto exchanges.
Addressing the Points:
  • Definition & Types: USDT is a fiat-collateralized stablecoin backed by USD reserves.
  • Importance: It facilitates trading, hedges against crypto volatility, and enables seamless cross-border transactions.
  • Disadvantages: Tether has faced scrutiny over reserve transparency and regulatory issues, highlighting the centralization risk.
  • Regulation: Tether has to comply with jurisdictional regulations in different countries, including disclosures related to reserve backing.
  • Beneficiaries: Traders, exchanges, crypto firms, and consumers benefit from its liquidity and stability.

In Conclusion

Stablecoins are transforming the landscape of digital finance by providing a stable, trustworthy, and efficient medium of exchange within and outside the crypto ecosystem. While they offer numerous benefits, regulatory clarity and transparency are essential for their growth and acceptance. As the industry evolves, stablecoins are likely to play a pivotal role in shaping the future of money.