Sony PlayStation Portable 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.
Internal Serial
Internal Serials for all Sony systems are a standardized format in redump: [T:ISN] XXXX-##### (example: [T:ISN] ULUS-12345)