Do you need a certificate of attendance from Web Summit Rio?
You can claim a certificate of attendance provided you registered and picked up your accreditation at Riocentro. 

You can apply for your Web Summit Rio certificate of attendance here

Once logged in, click on your profile picture in the top right of the screen and select “Request certificate of attendance” from the dropdown menu. A certificate of attendance will be sent to your email.

Please note, certificates cannot be edited.