Hello,
first I just want to thank you very much for the great job!
Testing your class to verify / extract data from IBAN codes, I realized that to get the right Branch ID from a correct italian iban, in registry.txt, I had to change the 12th piece of the line (explode by '|' ) from 0 to 1 not to include the National Checksum single char at the beginning of the Branch ID.
This actually works and does not seem to break any other functionality, but I would appreciate you to confirm this is the right way to proceed.