Stablecoins Explained: USDT, USDC, DAI and How They Work

What is a stablecoin?

A stablecoin is a cryptocurrency designed to hold a stable value, most commonly pegged 1:1 to a fiat currency such as the US dollar. They combine the fast, borderless settlement of crypto with the price stability of traditional money.

The three main types

1. Fiat-backed stablecoins

Examples: USDT (Tether), USDC(Circle). Each token is backed by an equivalent amount of cash and cash equivalents held by the issuer. Their trust model depends entirely on the issuer's reserves and audits.

2. Crypto-backed stablecoins

Example: DAI (MakerDAO). Users lock up over-collateralized crypto (like ETH) to mint stablecoins. Fully on-chain and transparent, but more capital-inefficient.

3. Algorithmic stablecoins

These use code and market incentives — not collateral — to maintain their peg. Historically the riskiest category; the 2022 collapse of UST is a reminder that a broken peg can spiral quickly.

Why do traders use stablecoins?

• Park profits without moving to a bank account.
• Trade 24/7 without waiting for wire transfers.
• Move value across exchanges cheaply and instantly.
• Earn yield through lending or DeFi protocols.
• Send remittances internationally with low fees.

Risks to understand

• Issuer risk — is the reserve actually there?
• Regulatory risk — governments are actively drafting stablecoin rules.
• Depeg risk — even USDC has briefly traded below $1 during banking stress.
• Smart contract risk for on-chain stablecoins.

You can monitor real-time USDT and USDC prices across exchanges on the NexPrices crypto page.