CYSAP

CYSAP is a type of FCV created by YundenLibbo.

Structure
CYSAP consists of 19 digits.

The first three characters are always letters and are taken from all letters of the English alphabet.

The next five indicate the year and month of first appearance or birth. To differientate months, letters are used (taken from all the letters of the alphabet plus the letters not present in English alphabet: É, Ö, Ä): The letters 'Ä', 'Ö' and 'Ø' are reserved for use for characters with unknown month of first appearance or birth. To indicate year, four digits are used.
 * January: A - C
 * February: D, E
 * March: É, F - H
 * April: I - K
 * May: L - N
 * June: O
 * July: P - Q
 * August: R - S
 * September: T
 * October, U
 * November: V
 * December: W - Z

The next three are the numeric code for which country did the character comes from. For example, 840 is United States of America.

The next five are the character's ID, and the next two digits are the PCL (I, O and 1 are not used).

The last digit is the check digit using Luhn algorithm. Letters are converted into numbers as shown in the table: