[SOLVED] Can disk Id be spoofed? How to verify disk legitimacy?

[Pc6777]

I ordered some verbatim m-discs from multiple sources recently. amazon, Newegg, b and h, and ebay(mediawholesaleonline), (very popular 99.9 percent positive reviews seller). i realized, the discs that came from ebay today, have a slightly different data layer that has more of a purple reflection and is noticeably slightly different than my other discs. the discs are identical besides that, and in img burn disc id and all disc specs are 100 percent identical as well as disc id(MILLEN-MR1-000). did verbatim change manufacturing process? is there a foolproof way to identify real discs vs fakes? is fake optical media even a thing these days? can the disc id be spoofed?

 

[velocityg4]

In 2019 Mitsubishi sold Verbatim to CMC. I would not be shocked if CMC screwed with the process. Making cheaper and lower quality discs. In order to reduce costs for the ever decreasing business of optical disc sales.

 

[Ralston18]

Also - Just FYI:

https://www.softpedia.com/get/CD-DVD-Tools/CD-DVD-Rip-Other-Tools/CDR-Media-Code-Identifier.shtml

https://en.wikipedia.org/wiki/Media_Identification_Code

https://powershell.one/wmi/root/cimv2/win32_physicalmedia

No guarantees though: the fakers could just also fake the manufacturer information.

 

[Pc6777]

In 2019 Mitsubishi sold Verbatim to CMC. I would not be shocked if CMC screwed with the process. Making cheaper and lower quality discs. In order to reduce costs for the ever decreasing business of optical disc sales.

I got all the discs recently, im new to optical media, but my theory is these were more purple because different batch/manufacture run.

 

[Pc6777]

Also - Just FYI:

https://www.softpedia.com/get/CD-DVD-Tools/CD-DVD-Rip-Other-Tools/CDR-Media-Code-Identifier.shtml

https://en.wikipedia.org/wiki/Media_Identification_Code

https://powershell.one/wmi/root/cimv2/win32_physicalmedia

No guarantees though: the fakers could just also fake the manufacturer information.

is there something that cant be faked, like capacity or layers in a certain part? in the img burn dvd identifier, everything was identical the id and all the specs of the disc.

 

[Pc6777]

In 2019 Mitsubishi sold Verbatim to CMC. I would not be shocked if CMC screwed with the process. Making cheaper and lower quality discs. In order to reduce costs for the ever decreasing business of optical disc sales.

maybe, these are archival m discs, probably there biggest money maker because they give optical media a reason to exist.

 

[Ralston18]

I lean towards @velocityg4 comments.

All too many once good products by once good companies falling to the wayside.....

Anything that makes money is going to draw in scammers, crooks, counterfeiter's, and cheap products that do not adhere to manufacturing standards of any sort. Especially if mass produced with little or no QA anywhere along the process.

E.g., fake Covid-19 /N95 face masks.

Another example: network cables. Lots of cheap cables being sold to unknowing consumers. Holds for video and audio cables as well.

Doubt that there is anything short of some full chemical analysis that could prove or provide an accurate fingerprint to identify a particular optical disk manufacturer. Even then, the base materials are likely to change and such analysis becomes moot.

 

[velocityg4]

I got all the discs recently, im new to optical media, but my theory is these were more purple because different batch/manufacture run.

Did you check the manufacturing date on the packages. I was just alluding to the differences being years produced (2019 earlier or later). The batch on eBay may be old stock or vice versa.

Like I went onto eBay for floppies. Specifically because I wanted a new unopened set of Sony floppies from the mid 90's or earlier. When quality standards were much higher.

 

[Pc6777]

Did you check the manufacturing date on the packages. I was just alluding to the differences being years produced (2019 earlier or later). The batch on eBay may be old stock or vice versa.

Like I went onto eBay for floppies. Specifically because I wanted a new unopened set of Sony floppies from the mid 90's or earlier. When quality standards were much higher.

yea, I would assume new floppies are produced in small numbers and made cheaply. this is the seller page, they seem really legit and make me think its just a different batch https://www.ebay.com/usr/mediawholesaleonline the discs didn't come in packaging, they were taken out of a large spindle most likely. I have a feeling there arnt really counterfeit blank discs anymore because larger markets like sneaker and laptop batteries are more profitable, could be wrong. counterfeit movies are defitly thing still, god a lotrs/hobbit combo for 20 bucks on ebay, it has zero copy protection on it lol. also the discs look nothing like the cheap lth discs i have with an organic dye, the ebay m discs and other m discs I have look identical except the ones on ebay had a little bit more of a purple reflection in certain lighting. but the discs look completely different than my cheap blu rays, it would have be be a very sophisticated operation to make them look like the real ones and not like cheap discs.

 

[Pc6777]

https://drive.google.com/file/d/1mtXS7_1pHkaluduxxfSOzgen639K11mG/view?usp=sharing pircture of burned discs side by side