Fundamental issue with snes.dll hash generator

[Former user]

For a couple roms (no-intro SNES dat), the hash generated by snes.dll is plain wrong. - Kaizou Choujin Shubibinman Zero (Japan).sfc - Mario Paint (Japan, USA) (Beta).sfc Please see attached picture. The same roms check ok in Clrmamepro, but romcenter says "unkown game". Please fix!

[Eric Bole-Feysot]

Issue #210 was marked as a duplicate of this issue.

[Eric Bole-Feysot]

Here is the ucon64 analysis of the kaizou rom:

As you can see, the crc returned by the snes plugin is the ‘search checksum’. The full file crc is the 'data checksum'.
I will try to get more details on this and see if the snes plugin is returning the correct crc.