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