new CZ IBAN examples

[Triplkrypl]

First two contains first part of CZ national format, we call it prefix and it is optional. I notice than previous IBANs have this only with zeros, which is in national format ignored and considered as empty.

Last one is valid, but is little trap for users. Ends with zero and if user adds one zero in the end in national format by mistake checksum is still fine 😢.

[globalcitizen]

Thanks!

These pass the IBAN checksum according to the current codebase.

I am unsure if I understand your comment fully. Could you perhaps share a demo script? Thanks.

$ cd utils
$ php validate-list.php example-ibans/cz-ibans
CZ06 3500 0000 0010 0047 2301 ... ok (no national checksum)
CZ12 3500 0000 0013 3047 2304 ... ok (no national checksum)
CZ10 3500 0000 0012 2047 2303 ... ok (no national checksum)
CZ3855000000005041018525 ... ok (no national checksum)
CZ35 0300 0000 0002 2514 9068 ... ok (no national checksum)
CZ8427000000002112049123 ... ok (no national checksum)
CZ56 0600 0000 0002 1193 3046 ... ok (no national checksum)
CZ12 0600 0000 0002 1193 3062 ... ok (no national checksum)
CZ9101000000000021645051 ... ok (no national checksum)
CZ6101000000430185770297 ... ok (no national checksum)
CZ27 0710 0010 1100 0792 2681 ... ok (no national checksum)
CZ13 0300 0000 0003 0092 2760 ... ok (no national checksum)

[Triplkrypl]

I am sorry for some misunderstand, CZ13 0300 0000 0003 0092 2760 IBAN is really OK, I added the IBAN into examples because is valid. Maybe some Czech banks avoid using bank accounts ending with zero for increase national checksum robustness, so can be less common.