Could have a QR code or symbol or initials on the box or stamped on the sole/leather. Leads to a providence chain on the site explaining who was behind it and has some example photos/videos of them at work.

Beerenberg, who make jams/sauces here in South Australia, have something like this with their Providence Pathway. You enter a barcode from one of their products and can see who was working the line that day cooking and packaging the product, their photo, very specific testing details from that day, etc.