Ring Code Guide
From Redump Wiki
When submitting dumps to Redump it is important to submit all ring codes that you can see. Ring codes that are too difficult to read are not required, but for the sake of completion, do your best. If you want to get all the ring codes, a magnifying glass can help, also two recommended products on Amazon[1] [2]. To clarify we still want your disc submissions in redump, even if you can't read all the ring codes, just do your best :)
These guides are intended to help you identify ring code information for each specific system's disc.
