The unified stablecoin balance backed 1:1 by USDC and USDT. One currency, no native gas tokens, no separate gas line.
USDF is the unified stablecoin balance on GM Markets, backed 1:1 by USDC and USDT held in custody. You hold one currency across the app, never need a native chain token to pay gas, and never see a separate gas line in any receipt (network gas is bundled into the trade quote).
USDF is a real ERC-20 token, not a UI abstraction. When you deposit (via Apple Pay, card, bank, or by receiving USDC), the equivalent USDF is minted to your wallet by an authorized partner. When you withdraw, USDF is queued for redemption back to USDC or fiat through the same partner.
USDF balance is per-chain at the wallet level. The Trade UI uses a chain-scoped balance from the chain you are trading on. The Portfolio aggregates across chains for a single total figure.
Stablecoins surface throughout the product with their canonical symbols (USDC, USDT, USDF) — never wrapped or prefixed. There is no gUSDC or yUSDC.