Structure of the ORCID Identifier

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Checksum The last character in the ORCID iD is a checksum. In accordance with ISO/IEC 7064:2003, MOD 11-2, this checksum must be "0" - "9" or "X", a capital letter X which represents the value 10. View the algorithm used below to determine the checksum of an ORCID iD, or see it in action using the ORCID Checksum Digit tool. /** * Generates check digit as per ISO 7064 11,2. * */ public static String generateCheckDigit(String baseDigits) { int total = 0; for (int i = 0; i < baseDigits.length(); i++) { int digit = Character.getNumericValue(baseDigits.charAt(i)); total = (total + digit) * 2; } int remainder = total % 11; int result = (12 - remainder) % 11; return result == 10 ? "X" : String.valueOf(result); }

Ссылаются нормы: Mod112CheckDigitIsX, Mod112ExpectedCheckValue, Mod112FoldBase, Mod112FoldStep, Mod112Invalid, Mod112Remainder, Mod112Total, Mod112Valid

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Some sample ORCID iDs Below are some example ORCID iDs with checksums as described above and expressed in the proper format. https://orcid.org/0000-0002-1825-0097 https://orcid.org/0000-0001-5109-3700 https://orcid.org/0000-0002-1694-233X