How to Sell Ontology Gas (ONG) for United States Dollar (USD) in Portugal

To sell Ontology Gas for United States Dollar in Portugal, first, find a cryptocurrency exchange that supports the ONG/USD trading pair. Create an account, verify your identity, and deposit your ONG into your exchange wallet. Locate the ONG/USD pair on the trading platform and place a sell order to exchange your Ontology Gas for United States Dollar. If the ONG/USD pair is unavailable, you can first sell Ontology Gas for a stablecoin like Tether (USDT) or a fiat currency such as the Euro, then trade that for United States Dollar. Be mindful of potential exchange fees, which vary by platform and can affect the total amount you receive.