How does the scratch code work?

[Leo Na]

Hi,

I am not 100% sure how the scratch codes work here, but I tried to use it as the verification codes and it failed.

So, my questions are

1. how does the scratch code work? work as a verification code?
2. do I need to persist the scratch codes in the database to make it work?

Thanks.

[Alex Gamas]

You will need to store the scratch codes, then when someone choose to use one of them, just remove the burned code from database.