The dollar, on a blockchain
A stablecoin is a cryptocurrency designed to always be worth $1. While Bitcoin and Ethereum bounce around in price, a stablecoin like USDT or USDC stays pegged to the dollar — give or take a few cents.
How? Each stablecoin is backed (in theory) by a real dollar held in reserve. Issue $1 of USDT, hold $1 of USD in a bank. The peg holds because anyone can redeem 1 USDT for 1 USD at any time.
Why this matters for DeFi
Crypto is volatile. Bitcoin can drop 30% in a week. That's exciting if you're trading, but useless if you want to:
- Earn predictable yield
- Lend money without watching the price tick
- Send remittances internationally
- Just... save
Stablecoins solve this. They give you the infrastructure of crypto (instant transfers, smart contracts, 24/7 access, no banks) without the volatility of crypto.
When a DeFi yield protocol says "deposit USDT and earn 12% APY," your principal stays at $1 per token. You're earning yield on top of a stable base. No surprises.
The most-used stablecoins
- USDT (Tether) — biggest, oldest, most widely accepted
- USDC (USD Coin) — issued by Circle, generally seen as more transparent
- BUSD (Binance USD) — Binance's stablecoin, popular on BNB Chain
- DAI — fully decentralized, backed by crypto collateral instead of bank dollars
For TurboLoop, USDT is the primary asset.
What can go wrong?
Stablecoins are generally very safe, but the peg can break:
- 2022: Terra USD (UST) collapsed entirely — but it wasn't backed by dollars, only by an algorithm
- 2023: USDC briefly dropped to $0.87 when Silicon Valley Bank failed (bounced back within 48 hours)
Lessons: stick to fiat-backed stablecoins (USDT, USDC) and avoid algorithmic ones for serious savings.