In the latest episode of the Web3 Decoded Codex podcast, the host breaks down the three main mechanisms that keep stablecoins pegged to the U.S. dollar and reveals the hidden risks that most users overlook. Stablecoins have become the backbone of the crypto economy, enabling trading, lending, and payments without the volatility of Bitcoin or Ethereum. But how do they maintain their $1 peg?
First, the fiat-collateralized model, used by USDT and USDC, backs each coin with real dollars or equivalents held in a bank account. This is simple and trustworthy, but it introduces counterparty risk: if the bank fails or the issuer mismanages reserves, the peg could break.
Second, crypto-collateralized stablecoins like DAI are backed by other cryptocurrencies, often overcollateralized to absorb price swings. However, in a severe market downturn, the collateral can lose value rapidly, triggering liquidations and causing the stablecoin to de-peg.
Third, algorithmic stablecoins use code to adjust supply and demand, maintaining the peg without any collateral. While innovative, these are the riskiest—as seen with TerraUSD's collapse—because they rely on continuous market confidence, which can vanish instantly.
Each method has trade-offs, and users must understand these risks before trusting stablecoins for everyday transactions or long-term holding.