Free $10 credit for PS4 pro buyers with a US PSN account.
I bought my console from EB and got the credit, so I can confirm it is not restricted to the US console.
This is for people that uses the US PSN as a sub account but doesn't log in often.
Basically just log into your US account and it should pop up.
I'm unsure if it'll be available for new sign ups but you can always try :x
Since we have no idea what the actual conditions are based on the comment below(non-pro buyers also getting the code).
I suggest that you:
1. log into your US account and check the notification from playstation for the voucher(even if you dont have a pro).
2. make sure that your US console is set as primary in the playstation network settings so that sony can register your console at its US server. Don't worry you can activate all accounts as primary at the same time without it deactivating the other, since the wording 'primary' can be a tad confusing.
Nice, time for a new VR game :)