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Understanding Stablecoins: USDC and USDT

What are stablecoins and why they're important for newcomers to cryptocurrency.

9 min read
Understanding Stablecoins: USDC and USDT

What Are Stablecoins?

Stablecoins are a category of cryptocurrencies designed to maintain a stable value by pegging their price to an external reference—typically a fiat currency like the US dollar. Unlike Bitcoin or Ethereum, which can experience significant price volatility, stablecoins aim to provide the benefits of cryptocurrency (fast transfers, programmability, global accessibility) without the price fluctuations that make other cryptocurrencies challenging to use for everyday transactions.

Why Stablecoins Matter

Reduced Volatility

Hold value in the crypto ecosystem without exposure to market fluctuations

Trading Pairs

Serve as common trading pairs on exchanges for easy conversion between cryptocurrencies

Cross-Border Transfers

Enable fast, low-cost international transfers without complex currency conversion

DeFi Access

Provide entry points to decentralized finance applications

Types of Stablecoins

Fiat-Collateralized

Backed by reserves of fiat currency held by a custodian.

Examples: USDC, USDT, BUSD

How they work:

  • For each stablecoin issued, $1 (or equivalent) is held in reserve
  • Users can redeem their stablecoins for the underlying fiat
  • Regular audits verify that sufficient reserves exist

Crypto-Collateralized

Backed by other cryptocurrencies with over-collateralization to account for volatility.

Examples: DAI, MIM

How they work:

  • Users lock up cryptocurrency worth more than the stablecoins they receive
  • If collateral value falls below threshold, positions may be liquidated
  • Managed through smart contracts rather than a central authority

Algorithmic

Use algorithms and smart contracts to maintain their peg by controlling supply.

Examples: FRAX (partially algorithmic)

How they work:

  • When price rises above $1, new coins are created to increase supply
  • When price falls below $1, coins are bought back to decrease supply
  • No direct collateral backing each coin

Hybrid Models

Combine multiple stabilization methods for increased resilience.

Examples: FRAX, USDD

How they work:

  • Partially backed by collateral
  • Partially stabilized through algorithmic mechanisms
  • Aim to combine the benefits of different approaches

Focus on USDC and USDT

Green Transfer specializes in helping users purchase two of the most widely-used stablecoins: USDC and USDT. Let's explore each in detail:

USD Coin (USDC)

USDC is a fiat-collateralized stablecoin launched in 2018 by the Centre consortium, founded by Circle and Coinbase.

Key features:

  • Backing: Each USDC is backed by $1 USD held in regulated financial institutions
  • Transparency: Monthly attestations by accounting firm Grant Thornton verify that sufficient reserves exist
  • Regulation: Circle is regulated as a money transmitter in the US
  • Availability: Available on multiple blockchains including Ethereum, Solana, Avalanche, and more
  • Use Cases: Trading, payments, remittances, yield generation in DeFi

USDC is often considered one of the most transparent and regulated stablecoins, making it popular for those who prioritize security and compliance.

Tether (USDT)

USDT is the first and most widely used stablecoin, launched in 2014 by Tether Limited.

Key features:

  • Backing: Claimed to be backed by a mix of cash, commercial paper, and other assets
  • Market Presence: Highest trading volume and liquidity among stablecoins
  • Availability: Available on multiple blockchains including Ethereum, Tron, Solana, and more
  • Global Usage: Particularly popular in Asian markets and global trading
  • Use Cases: Trading, cross-border transfers, store of value

USDT has faced some controversy regarding its reserves but remains the most widely used stablecoin due to its liquidity and market presence.

Comparing USDC and USDT

FeatureUSDCUSDT
IssuerCircle (Centre Consortium)Tether Limited
Launch Date20182014
TransparencyMonthly attestationsQuarterly attestations
Market Cap~$30 billion (varies)~$80 billion (varies)
Primary BlockchainsEthereum, Solana, AvalancheEthereum, Tron, Solana
Regulatory ComplianceHighMedium
RedemptionDirect redemption availableLimited redemption options

Ready to Purchase Stablecoins?

Green Transfer makes it easy to buy USDC and USDT using your bank account or credit card. Our platform ensures a secure and straightforward process for acquiring these useful digital assets.

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