Https://urop.gatech.edu/sites/default/files/webform/thesis_approval_form_upload/_sid_/How%20to%20cancel%20a%20pending%20transaction%20on%20Coinbase.pdf https://urop.gatech.edu/sites/default/files/webform/thesis_approval_form_upload/_sid_/How%20to%20cancel%20a%20pending%20transaction%20on%20Coinbase.pdf