decoding/identifying software user by UUID

A UUID is a unique ID rather than a user iD. Years ago, each UUID contained traceable elements but this was seen as a privacy violation and was changed. Now they are by design untraceable and not repeated. It belongs to this file only. Still, Photoshop 7 is old, much older than 2013.  Of course all info may be faked. Anyway I refer you to Wikipedia for detailed knowledge of UUID generation.

There are many tools one the web for generating UUID and uuid registration however It looks like all uuid would not be registered in any centralized registry.  This link may help you learn more about uuids Universally Unique Identifiers (UUIDs)

Decode seems to get date it was generated UUID Decode

My doctored UUID decode is invalid but works for my use I just change a character is a vailid one and used it before I knew how to generate one. I started using it in 2007.   Decoded state its a 1998 uuid. I just need an id that would work in my plug-in Photoshop script. Adobe added plug-in support in cs3  I did not know at that time that character string was a uuid....  I just knew I need some ID that look like the character string in Adobe's Fit Image plug-in script.

UUID can be generated by anyone for any reason and can be doctored the uuid may just mean some Plug-in was use.  Like an Adobe script like its Fit Image plugin the UUID may be all ovet the net and let in the matadata by some applicayion anybody could have used.  UUID are not nessary a security thing use to protect or identfy somone. I think your on a wild goose chase.