The Universal Product Code (UPC) is a barcode system commonly used to track products and purchases in retail stores. The most familiar version, UPC-A, consists of 12 unique numerical digits assigned to each product for easy identification.
However, UPCs are not used to track or collect music publishing royalties. Woolyvard handles music tracking through International Standard Recording Codes (ISRCs), which are specifically assigned to your recordings for royalty collection.
Here’s an example of what a UPC code looks like:

