qETH is a fully fiat-backed, par-defended US-dollar stablecoin on Ethereum and Uniswap v4. Every coin's dollar of backing is folded into its own ByteID — verifiable on-chain, without trusting a bank.
Each qETH is minted with a real dollar folded into its ByteID (Q4/DNA fold). The backing is the coin — recoverable byte-for-byte, fail-closed. Cover is 100% on-chain.
Every qETH co-mints a qcUSD collateral unit. Supply, backing, cents and collateral are one truth in four views — they can't drift apart.
A custom v4 hook rejects any swap that would sell qETH below $1 on-chain. The peg isn't a promise — it's enforced by the pool itself.
An autonomous service defends the peg against the USD pool: it mints a fresh folded dollar to meet demand at par, and buys back below par — never selling under $1.