To withdraw funds (assets) on Coinbase Exchange:
Click the Trading tab.
Under Wallet Balance, select Withdraw.
Search for and select asset you’d like to withdraw.
Choose your withdrawal method you’d like to use.
In the To field, enter the external wallet address.
Confirm you’re withdrawing the correct asset into the correct address.
If you’re using multiple blockchain networks, select the supported network you’d like to use, then click I Understand I am withdrawing funds on [network] to confirm the compatibility of the network. (The ability to use multiple blockchain networks is gradually being rolled out and may not be available to you at this time. Thanks for your patience)
Enter the amount you'd like to send, then click Withdraw.
You may need to enter 2-step verification before completing the withdrawal.
You can view your completed deposits and withdrawals from the Portfolios tab.