Is there a way to verify the authenticity of OS X Installation media?

Hi,
I have been having problems with a computer being compromised and after so many re-installs, I am beginning to suspect the installation media itself. Does anyone have or know of an md5 checksum or any other hash for the disks? Is there any other method that can be used to verify their authenticy? I have:
Mac mini
Mac OS X Install Disk 1
Mac OS X version 10.4.7
AHT version 3A102
Disc version 1.1
2Z691-5887-A
Mac OS X Install Disk 2
Disc version 1.0
ZZ691-5860-A
Thanks in advance for any and all replies.

Hi! The installation process normally check the media for verification. Your continued installation problems may point to another problem. Often bad ram can write bad data to a drive or the drive itself can be the problem. The cases of a bad install dvd are rare. I'd pull ram except for the original stick, then I'd zero the hard drive and try again. Otherwise the most likely suspect is a bad logic board. Have you run the hardware test disc? Tom

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