cdrid. A utility that you can download from cdmediaworld.com or cdrinfo.com etc.
so dazex, seriously - there was no information to be had at all? Not even the type of dye? If I remember correctly cyanine is sometimes described as "short" process or something like that. Pythalocine (or however you spell it) type 5 is described as "long" process.
In any case, some cdr's have little or no info on their ATIP groove.
BTW, real TDK's made in the TDK factory in Georgia are great from all accounts. However, when they subcontracted to RITEK to make their "100% Certified" blanks it raised some issues since RITEK are known to make some of the crappiest cdr's around. Common sense dictates caution to not be thrown to the wind. Hmmnnnn, real cdr's are good. Same "brand name" but cdr's made in another factory with bad reputation ... maybe decent ... maybe not. It will take some time for the general concensus to come into effect. Anecdotal evidence supports the RITEK made TDK's as being decent. I haven't heard bad reviews about TDK's yet so it looks good.
Consider the pricing. On average you will find a 50pk of RITEK made TDK's "100% Certified" for 23-25 dollars. Real TDK's will be around 35 dollars. So, for the "real" ones you are paying quite a premium for them. Worth it? Don't know. More for the various ones with printable surfaces.