Has USCF responded? Is there any reason to believe that any meaning at all should be assigned to the ID number? Embedding meaning in Key Fields is a pretty archaic idea in information science.
USCF Algorithm

Has USCF responded? Is there any reason to believe that any meaning at all should be assigned to the ID number? Embedding meaning in Key Fields is a pretty archaic idea in information science.
The IDs themselves are clearly assigned sequentially and are not random or generated from a hash. The only exceptions are mentioned above.
Huh, thanks for the detailed answer!