How to Buy f(x) Protocol fxUSD (FXUSD) with Sponge (OLD) ($SPONGE)

To buy f(x) Protocol fxUSD using Sponge (OLD), first, find a cryptocurrency exchange that supports the FXUSD/$SPONGE trading pair. Create an account, verify your identity, and deposit your $SPONGE into your exchange wallet. Locate the FXUSD/$SPONGE pair on the trading platform and place an order to exchange your Sponge (OLD) for f(x) Protocol fxUSD. If the FXUSD/$SPONGE pair is unavailable, you can first exchange Sponge (OLD) for a stablecoin like Tether (USDT) or a fiat currency, then trade that for f(x) Protocol fxUSD. Be mindful of potential exchange fees, which vary by platform and can affect the total cost of your transaction.