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Jul 16, 2025

What Is Tether (USDT)? The Ultimate Guide to the World's Leading Stablecoin

Marketing

Cregis

5 min. read

Key Takeaways

  • Tether (USDT) is a stablecoin pegged to the U.S. dollar, offering price stability in volatile crypto markets.
  • USDT is issued by Tether Limited and backed by a mix of fiat reserves and digital assets.
  • It plays a key role in crypto trading, DeFi, and global remittances.
  • Tether is the largest and most widely used stablecoin by market capitalization.


Introduction to Tether (USDT)

Tether (USDT) is a type of stablecoin—a cryptocurrency designed to maintain a stable value by being pegged to a real-world asset, usually a fiat currency. In this case, it's the U.S. dollar.

Launched in 2014, Tether aims to bring the benefits of cryptocurrency—fast, borderless transactions—with the stability of fiat. It's issued by Tether Limited, a company under iFinex, which also operates the exchange Bitfinex.

As of March 2024, USDT had a market cap of nearly $99 billion, ranking third behind only Bitcoin (BTC) and Ethereum (ETH).


How Tether (USDT) Works

Pegging and Reserves

USDT maintains its $1 value by being backed by reserves that include:

  • Cash and U.S. Treasury bills
  • Bitcoin and other digital assets
  • Precious metals
  • Secured loans and miscellaneous investments

While Tether claims full backing, not all of it is in cash—some assets carry risks or are not easily redeemable.

Blockchain Compatibility

Tether is supported across multiple blockchains:

  • Ethereum (ERC-20)
  • TRON (TRC-20)
  • Solana, Avalanche, Algorand, EOS
  • Bitcoin Omni & Liquid, Kava, Polkadot

This makes USDT highly versatile and integrated into most crypto ecosystems.


Why Use Tether (USDT)?

1. Stability Without a Bank

Unlike Bitcoin or Ethereum, USDT holds steady around $1, acting as a safe zone during crypto volatility.

2. Easy Crypto Conversions

Traders use USDT as a base trading pair to switch between different assets without cashing out to fiat.

3. Fast, Global Payments

Need to send money across borders? USDT enables instant, low-fee global transactions—no middlemen needed.

4. DeFi and Yield Farming

USDT is widely used in DeFi platforms for lending, borrowing, and staking to earn passive income.


A Brief History of Tether

2014 – The Beginning

Launched as RealCoin, it rebranded to Tether (USDT) and was first built on Bitcoin’s Omni Layer.

2017 – Major Hack

$31M in USDT was stolen. Tether responded with a hard fork to freeze the stolen funds.

2019 – Legal Troubles

The New York Attorney General accused Tether/Bitfinex of misusing $700M in reserves. Tether later settled, paying an $18.5M fine.

2021 – CFTC Crackdown

Tether paid a $41M fine after being found to have misrepresented reserve backing.

2022 – Terra Fallout

USDT briefly dropped to $0.96 after Terra’s UST collapsed, but quickly rebounded. Tether honored all redemption requests.

2023 – Growth and Expansion

Tether expanded into AI by acquiring Northern Data Group, appointed Paolo Ardoino as CEO, and won a lengthy court case.


Transparency and Reserves

Tether reports its reserves daily on its official website. As of March 2024:

  • 84.58% in cash equivalents & short-term deposits
  • 3.62% in precious metals
  • 2.91% in Bitcoin
  • 4.95% in secured loans
  • 3.89% in other investments

Note: Tether has improved transparency, but still lacks full third-party audits, which has drawn industry criticism.


How to Buy Tether (USDT)

You can buy USDT on most popular platforms:

  • Centralized Exchanges: Binance, Kraken, Coinbase, Bitfinex, CoinSpot
  • Decentralized Exchanges (DEXs): Using Ethereum or TRON
  • Mobile Wallets: Trust Wallet, MetaMask, Cregis Wallet

USDT is available in ERC-20, TRC-20, and other blockchain formats—choose based on fees and compatibility.


How USDT Compares to Other Stablecoins

StablecoinPegHighlights
USDTUSDHigh liquidity, multi-chain, widely adopted
USDCUSDFully regulated, transparent reserves
DAIUSDDecentralized, backed by crypto
BUSDUSDBinance-native, under regulatory review
USDT leads in volume and reach, but USDC and DAI offer better transparency or decentralization.


Is Tether Safe?

Pros:

  • Highly liquid
  • Widely accepted
  • Maintains peg under stress

Cons:

  • Past legal issues
  • Reserves not 100% fiat
  • Limited third-party audits


Conclusion: USDT is reliable for most use cases, but not risk-free. Diversification is key.


Final Thoughts

Tether (USDT) plays a critical role in the global crypto economy. Whether you're a trader, DeFi user, or sending remittances, USDT offers the stability of fiat with the power of blockchain.

It’s not without controversy—but it remains the most trusted stablecoin by volume, speed, and accessibility.

About Cregis

Founded in 2017, Cregis is a global leader in enterprise-grade digital asset infrastructure, providing secure, scalable and efficient management solutions for institutional clients.

Built to solve the challenges of fragmented blockchain systems and asset security risks, Cregis delivers MPC-based self-custody wallets, WaaS solutions, and Payment Engine, featuring collaborative asset control and a compliance-ready ecosystem.

To date, Cregis has served over 3,500 institutional clients globally. Our solutions empower exchanges, fintech platforms, and Web3 enterprises to adopt blockchain technology with confidence. Backed by years of proven expertise in blockchain and security, Cregis helps businesses accelerate their Web3 transformation and unlock global digital asset opportunities.