Invoices & Certificates of Attendance
Invoice receipts are downloadable from the confirmation email you received after registering under the Payment Receipt Information section. If the downloadable invoice receipt does not meet your needs or you need to have your confirmation email resent, please submit your request here. Please include any additional customization you need for your invoice receipt in the request.
Certificates of Attendance:
To request a Certificate of Attendance, please submit a request here. Please Note: We verify attendance through the registration system, and Certificate of Attendance letters are sent out after the event is completed.
We never sell attendee lists or contact information, nor do we authorize others to do so. If you receive an email claiming to sell an attendee list for a Linux Foundation event, please forward it to email@example.com.
If you are unable to attend, you may substitute another attendee in lieu of cancellation. To substitute an attendee, sign back into your registration, click the “Register/Modify”, and select “Transfer Registration” on your confirmation page.