Trading card grading companies issue unique ID codes for each card they grade, customers like to be able to verify the unique code for authentication by searching the ID code.
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Hi there and welcome to the Community, @Shaan1 
Do I understand right that you have the Excel Sheet right on your website and you’d like to add a search box there? Or would you like to add it directly into the Excel Sheet?
Got you, thanks!
We can’t promise that such an app will be released. However, if more users upvote this idea, it might get chances for consideration 