How do I cancel a bitcoin transaction?
Please note that once confirmed on the blockchain, bitcoin transaction are irreversible, they cannot be cancelled or reversed.
With regard to cryptocurrency transactions, you are responsible for the accuracy of the recipient and transaction details you provide us, and we will transfer value according to the instructions received from you, but we do not guarantee the identity of the person or entity receiving the transfer.
Please consult our Uphold Member Agreement (section 5.4) for additional details about this.
Note: For future reference, we would advise you to have 2-Factor Authentication enabled for cryptocurrency transactions.