$USD1 already had cex distribution as you guys know

but whats cooler is now @Aster DEX plugged it into the perp layer too (starting with BTC, ETH and SOL)

--> quote asset, margin asset, collateral. same collateral treatment as $USDT , so the switch cost for traders is pretty low. and the fee difference is real too

bps maker / 0.5 bps taker on USD1 pairs vs 4 bps taker on USDT.

smarter part is USD1 quietly getting wired into actual trading flow