Add unique identifer to file

This project received 9 bids from talented freelancers with an average bid price of €143 EUR.

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Project Budget
€30 - €250 EUR
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Project Description

Im looking for a way to basically add a unique code to files that can be read from the file to identify it.

Heres how it should work:

I have a file, I upload it to my site and a unique code is added to it along with other details. If i want to check for details on the file i can later upload it to the site and check for details on the file.

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