Guid

https://docs.microsoft.com/ru-ru/dotnet/api/system.guid.newguid?view=netframework-4.8

https://blogs.msdn.microsoft.com/ruericlippert/2012/07/31/guid-1/

https://stackoverflow.com/questions/7981190/how-to-generate-absolutely-unique-guids

https://www.guidgenerator.com/

https://www.dotnetperls.com/guid

http://qaru.site/questions/217769/guidnewguid-vs-a-random-string-generator-from-randomnext

https://www.c-sharpcorner.com/UploadFile/prasoonk/guids-in-C-Sharp-and-net/

https://www.c-sharpcorner.com/article/what-is-guid-in-c-sharp/

https://ru.wikipedia.org/wiki/GUID