ONIX Code Lists Issue 70, July 2025

List 43: Text item identifier type

Value Description Notes
01 Proprietary text item ID scheme For example, a publisher’s own identifier scheme for a textual content item. Note that a distinctive <IDTypeName> is required with proprietary identifiers
03 GTIN-13 Formerly known as the EAN-13 (unhyphenated)
06 DOI Digital Object Identifier (variable length and character set, beginning ‘10.’ and without https://doi.org/ or the older http://dx.doi.org/)
09 PII Publisher item identifier, 17 characters, without punctuation, beginning with B (for book) or S (for serial publications). Deprecated
10 SICI Serial Item and Contribution Identifier, for serial items only. Deprecated: the SICI was withdrawn as a standard in 2012
11 ISTC International Standard Text Code (16 characters: numerals and letters A–F, unhyphenated). Deprecated: the ISTC was withdrawn as a standard in 2021
15 ISBN-13 (Unhyphenated)
39 ISCC International Standard Content Code, a ‘similarity hash’ derived algorithmically from the content itself (see https://iscc.codes). <IDValue> is a sequence comprising the Meta-Code and Content-Code ISCC-UNITSs generated from a digital manifestation of the work, as a variable-length case-insensitive alphanumeric string (or 27 characters including one hyphen if using ISCC v1.0, but this is deprecated). Note alphabetic characters in v1.x ISCCs use Base32 encoding and are conventionally upper case. The ‘ISCC:’ prefix is omitted. Only for use in ONIX 3.0 or later