Worked example
A confectioner proofing a small mock package can test 9638507, which yields 96385074, then scan the printed proof before production.
Before you print
EAN-8 identifiers are allocated through GS1; do not treat a random eight-digit example as a sellable product number.
Barcode artwork is not proof of an assigned GS1 number. A free barcode image and a GS1-issued GTIN are different things.