Sony PlayStation 5 Moderation Guide
From Redump Wiki
Versions
When two different numbered versions of a given disc exist, both entries get the version number placed into the datname. This also applies to v1.00 discs.
Layerbreak
Layerbreak calculation from the PIC is broken in the site backend. The correct layerbreak can be extracted using https://ednessp.github.io/live/redump
Internal Serial
Internal Serials for all Sony systems are a standardized format in redump: [T:ISN] XXXX-##### (example: [T:ISN] PPSA-01628). There may be older entries that don't have a hyphen and those can be updated over time.