Talk:Validate International Securities Identification Number

Dup?

Is this a duplicate of Luhn_test_of_credit_card_numbers?

If not, what is the task? --Rdm (talk) 07:22, 26 February 2015 (UTC)

Thanks Rdm. I should have spotted the connection with Luhn. The difference is that ISINs can contain alphabetic characters, which must be translated to digits before a Luhn checksum is calculated. CUSIP, the North American stock codes, are shorter but otherwise use the same algorithm as ISINs. I couldn't see a Rosetta page for them.

There is another page on Rosetta for SEDOLs, which use the same letter-to-number technique, but thereafter use a different checksum algorithm, not Luhn.

So I think there is a point in having an ISIN page. What do you think?

--TheWombat (talk) 00:05, 27 February 2015 (UTC)