The Identifier (IDENT) module of the EU DPP core ontology proposed by the CIRPASS-2 European project.
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The Identifier (IDENT) module of the EU DPP core ontology proposed by the CIRPASS-2 European project.

Release: 2026-10-09

Created on: 2026-04-13

Revision:
1.2.0
Issued on:
2026-10-09
Authors:
Tarmo Robal
Contributors:
Elio Hbeich
Riina Maigre
Download serialization:
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License:
Apache 2.0
Visualization:
Visualize with WebVowl
Cite as:
Tarmo Robal. The Identifier (IDENT) module of the EU DPP core ontology proposed by the CIRPASS-2 European project.. Revision: 1.2.0.
Provenance of this page
Ontology Specification Draft

EU DPP IDENT: Overview back to ToC

This ontology has the following classes and properties.

Classes

Object Properties

Data Properties

Annotation Properties

Named Individuals

EU DPP IDENT: Description back to ToC

The Identifier module (IDENT) of the EU DPP core ontology proposal of the CIRPASS-2 European project.

Cross-reference for EU DPP IDENT classes, object properties and data properties back to ToC

This section provides details for each class and property defined by EU DPP IDENT.

Classes

Actor identifierc back to ToC or Class ToC

IRI: https://w3id.org/eudpp#ActorIdentifier

A type of identifier to identify Actors. A unique code assigned to Actor based on a scheme.
has super-classes
Identifier c
is disjoint with
DPP identifier c, Facility identifier c, Material identifier c, Product identifier c, Substance of concern identifier c, substance identifier c

Actor identifier schemec back to ToC or Class ToC

IRI: https://w3id.org/eudpp#ActorIdentifierScheme

A kind of identifier scheme. The scheme or standard used to identify Actors. e.g., GLN, LEI, etc.
has super-classes
Identifier scheme c
has members
GLN ni, LEI ni
is disjoint with
Facility identifier scheme c, Material identifier scheme c, Product identifier scheme c, Substance Identifier Scheme c

DPP identifierc back to ToC or Class ToC

IRI: https://w3id.org/eudpp#DPPIdentifier

A type of identifier to identify DPP. DPP Identifier.
has super-classes
Identifier c
is disjoint with
Actor identifier c, Facility identifier c, Material identifier c, Product identifier c, Substance of concern identifier c, substance identifier c

Facility identifierc back to ToC or Class ToC

IRI: https://w3id.org/eudpp#FacilityIdentifier

A unique code assigned to a physical site (factory, warehouse, plant, school, hospital, etc.), i.e., identifies a location.
has super-classes
Identifier c
is disjoint with
Actor identifier c, DPP identifier c, Material identifier c, Product identifier c, Substance of concern identifier c, substance identifier c

Facility identifier schemec back to ToC or Class ToC

IRI: https://w3id.org/eudpp#FacilityIdentifierScheme

A kind of identifier scheme. The scheme or standard used to identify Facilities.
has super-classes
Identifier scheme c
is disjoint with
Actor identifier scheme c, Material identifier scheme c, Product identifier scheme c, Substance Identifier Scheme c

Identifierc back to ToC or Class ToC

IRI: https://w3id.org/eudpp#Identifier

Identifier. A general class to hold different kinds of identifiers described and used for EU DPP CO. Each sub-class of this class describes a different kind of identifier. Intentionally modelled as sub-classes. Identifiers have value, and a scheme/standard they are based on. Cardinatlity restrictions added to each subclass to enforce inheritance of the data propertyy identifierValue.
has sub-classes
Actor identifier c, DPP identifier c, Facility identifier c, Material identifier c, Product identifier c, Substance of concern identifier c, substance identifier c
is in domain of
has granularity op, has scheme op, identifier expires on dp, identifier issued on dp, identifier juristiction dp, identifier value dp

Identifier granularityc back to ToC or Class ToC

IRI: https://w3id.org/eudpp#IdentifierGranularity

The granularity of the identifier. For example, for Products this could be model, batch, item.
has sub-classes
Product identifier granularity c
is in range of
has granularity op

Identifier schemec back to ToC or Class ToC

IRI: https://w3id.org/eudpp#IdentifierScheme

The scheme or standard used for Identifier.
has sub-classes
Actor identifier scheme c, Facility identifier scheme c, Material identifier scheme c, Product identifier scheme c, Substance Identifier Scheme c
is in domain of
identifier example value dp, identifier maximum length dp, identifier minimum length dp, identifier pattern dp, identifier scheme issuer dp, identifier scheme version dp
is in range of
has scheme op

Material identifierc back to ToC or Class ToC

IRI: https://w3id.org/eudpp#MaterialIdentifier

A type of identifier to identify materials. A unique code assigned to Material based on a scheme.
has super-classes
Identifier c
is disjoint with
Actor identifier c, DPP identifier c, Facility identifier c, Product identifier c, Substance of concern identifier c, substance identifier c

Material identifier schemec back to ToC or Class ToC

IRI: https://w3id.org/eudpp#MaterialIdentifierScheme

A kind of identifier scheme. The scheme or standard used to identify materials, e.g., CAS.
has super-classes
Identifier scheme c
has members
CAS ni
is disjoint with
Actor identifier scheme c, Facility identifier scheme c, Product identifier scheme c, Substance Identifier Scheme c

Product identifierc back to ToC or Class ToC

IRI: https://w3id.org/eudpp#ProductIdentifier

A type of identifier to identify Products. A unique code assigned to identify a product. e.g., GTIN.
has super-classes
Identifier c
is disjoint with
Actor identifier c, DPP identifier c, Facility identifier c, Material identifier c, Substance of concern identifier c, substance identifier c

Product identifier granularityc back to ToC or Class ToC

IRI: https://w3id.org/eudpp#ProductIdentifierGranularity

The granularity level (batch, item, model) at which the product identifier represents the product.
is equivalent to
{ batch ni , item ni , model ni }
has super-classes
Identifier granularity c
has members
batch ni, item ni, model ni

Product identifier schemec back to ToC or Class ToC

IRI: https://w3id.org/eudpp#ProductIdentifierScheme

A kind of identifier scheme. The scheme or standard used to identify Products, e.g., GTIN, SKU, etc.
has super-classes
Identifier scheme c
has members
GTIN ni, SKU ni
is disjoint with
Actor identifier scheme c, Facility identifier scheme c, Material identifier scheme c, Substance Identifier Scheme c

substance identifierc back to ToC or Class ToC

IRI: https://w3id.org/eudpp#SubstanceIdentifier

A type of identifier to identify substances. A unique code assigned to substance based on a scheme.
has super-classes
Identifier c
has sub-classes
Substance of concern identifier c
is disjoint with
Actor identifier c, DPP identifier c, Facility identifier c, Material identifier c, Product identifier c

Substance Identifier Schemec back to ToC or Class ToC

IRI: https://w3id.org/eudpp#SubstanceIdentifierScheme

has super-classes
Identifier scheme c
has members
EC ni, ECHA ni
is disjoint with
Actor identifier scheme c, Facility identifier scheme c, Material identifier scheme c, Product identifier scheme c

Substance of concern identifierc back to ToC or Class ToC

IRI: https://w3id.org/eudpp#SoCIdentifier

A type of identifier to identify substances of concern.
has super-classes
Identifier c, substance identifier c
is disjoint with
Actor identifier c, DPP identifier c, Facility identifier c, Material identifier c, Product identifier c

Object Properties

has granularityop back to ToC or Object Property ToC

IRI: https://w3id.org/eudpp#hasGranularity

Defines the granularity of an identifier, if exists.
has domain
Identifier c
has range
Identifier granularity c

has schemeop back to ToC or Object Property ToC

IRI: https://w3id.org/eudpp#hasScheme

The scheme/standard the Identifier follows
has domain
Identifier c
has range
Identifier scheme c

Data Properties

identifier example valuedp back to ToC or Data Property ToC

IRI: https://w3id.org/eudpp#identifierExampleValue

Example value of the identifier
has domain
Identifier scheme c
has range
string

identifier expires ondp back to ToC or Data Property ToC

IRI: https://w3id.org/eudpp#identifierExpiresOn

Identifier expiration date
has domain
Identifier c
has range
date

identifier issued ondp back to ToC or Data Property ToC

IRI: https://w3id.org/eudpp#identifierIssuedOn

Date of issuing the identifier
has domain
Identifier c
has range
date

identifier juristictiondp back to ToC or Data Property ToC

IRI: https://w3id.org/eudpp#identifierJurisdiction

An optional property used to qualify the issuing country or territory required to disambiguate national registration numbers. Format: ISO 3166-1 alpha-2, i.e., two-letter country code, such as FR for France, DE for Germany, EE for Estonia, etc.
has domain
Identifier c
has range

identifier maximum lengthdp back to ToC or Data Property ToC

IRI: https://w3id.org/eudpp#identifierMaxLength

Maximum length of the identifier
has domain
Identifier scheme c
has range
integer

identifier minimum lengthdp back to ToC or Data Property ToC

IRI: https://w3id.org/eudpp#identifierMinLength

Minimum length of the identifier
has domain
Identifier scheme c
has range
integer

identifier patterndp back to ToC or Data Property ToC

IRI: https://w3id.org/eudpp#identifierPattern

A pattern the identifier conforms to, given as a regular expression (regex).
has domain
Identifier scheme c
has range
string

identifier scheme issuerdp back to ToC or Data Property ToC

IRI: https://w3id.org/eudpp#identifierSchemeIssuer

Issuer of the identifier scheme
has domain
Identifier scheme c
has range
string

identifier scheme versiondp back to ToC or Data Property ToC

IRI: https://w3id.org/eudpp#identifierSchemeVersion

Reference standard version the instance schema refers to
has domain
Identifier scheme c
has range
string

identifier valuedp back to ToC or Data Property ToC

IRI: https://w3id.org/eudpp#identifierValue

The (unique) value of the identifier.
has domain
Identifier c
has range
string

Annotation Properties

alt Labelap back to ToC or Annotation Property ToC

IRI: http://www.w3.org/2004/02/skos/core#altLabel

contributorap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/contributor

createdap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/created

creatorap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/creator

definitionap back to ToC or Annotation Property ToC

IRI: http://www.w3.org/2004/02/skos/core#definition

descriptionap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/description

identifierap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/identifier

issuedap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/issued

licenseap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/license

preferred Namespace Prefixap back to ToC or Annotation Property ToC

IRI: http://purl.org/vocab/vann/preferredNamespacePrefix

referencesap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/references

sourceap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/source

titleap back to ToC or Annotation Property ToC

IRI: http://purl.org/dc/terms/title

Named Individuals

batchni back to ToC or Named Individual ToC

IRI: https://w3id.org/eudpp#batch

According to ESPR Art 9 (2d) the digital product passport is to be established at model, batch or item level, and the definition of such levels is given by delegated acts; The term ‘batch’ usually refers to a subset of a specific model composed of all products produced in a specific manufacturing plant at a specific moment in time (ESPR preamble (33)).
belongs to
Product identifier granularity c

CASni back to ToC or Named Individual ToC

IRI: https://w3id.org/eudpp#CAS

CAS Number (Chemical Abstracts Service)
belongs to
Material identifier scheme c
has facts
identifier example value dp "7732-18-5"
identifier maximum length dp "12"^^integer
identifier minimum length dp "7"^^integer
alt Label ap "Chemical Abstracts Service Registry Number"@en

ECni back to ToC or Named Individual ToC

IRI: https://w3id.org/eudpp#EC

EC number is a unique identification number assigned to a chemical substance in the European Union. It is used to identify substances in regulatory databases, safety data sheets (SDSs), and chemical legislation.
belongs to
Substance Identifier Scheme c
has facts
identifier example value dp "200-578-6"
identifier maximum length dp "9"^^decimal
identifier pattern dp "^[2-5]\d{2}-\d{3}-\d$"

ECHAni back to ToC or Named Individual ToC

IRI: https://w3id.org/eudpp#ECHA

ECHA substance identification scheme refers to the approach used by the European Chemicals Agency (ECHA) to identify and distinguish chemical substances for regulatory purposes under EU chemicals legislation, particularly REACH.
belongs to
Substance Identifier Scheme c

EORIni back to ToC or Named Individual ToC

IRI: https://w3id.org/eudpp#EORI

Economic Operators Registration and Identification (EU). This is the EU’s official identifier for companies involved in import/export. Mandatory for any company trading with the EU. Used in customs declarations Unique per company Format: country code + number (e.g., DE123456789) This is the most widely used identifier for economic operators in EU trade.
has facts
identifier example value dp "DE123456789012345"
identifier maximum length dp "17"^^integer
identifier minimum length dp "8"^^integer
alt Label ap "Economic Operators Registration and Identification (EU"@en

GLNni back to ToC or Named Individual ToC

IRI: https://w3id.org/eudpp#GLN

A globally unique identifier defined by GS1 used to identify legal entities, functional entities, and physical locations within business and supply chain processes. Typically identifies: legal entities, functional entities (departments), physical locations (warehouses, sites).
belongs to
Actor identifier scheme c
has facts
identifier example value dp "9501101530003"
identifier maximum length dp "13"^^integer
identifier minimum length dp "13"^^integer
identifier scheme issuer dp "GS1"
alt Label ap "Global Location Number"@en

GTINni back to ToC or Named Individual ToC

IRI: https://w3id.org/eudpp#GTIN

A globally unique identifier for trade items, defined by GS1, used to identify products at various packaging levels.
A globally unique identifier for trade items, defined by GS1, used to identify products at various packaging levels.
belongs to
Product identifier scheme c
has facts
identifier example value dp "14006381333938"
identifier maximum length dp "14"^^integer
identifier minimum length dp "8"^^integer
identifier scheme issuer dp "GS1"
alt Label ap "Global Trade Item Number"@en
definition ap "A globally unique identifier for trade items, defined by GS1, used to identify products at various packaging levels."@en

itemni back to ToC or Named Individual ToC

IRI: https://w3id.org/eudpp#item

According to ESPR Art 9 (2d) the digital product passport is to be established at model, batch or item level, and the definition of such levels is given by delegated acts; The term ‘item’ usually refers to a single unit of a model (ESPR preamble (33)).
belongs to
Product identifier granularity c

LEIni back to ToC or Named Individual ToC

IRI: https://w3id.org/eudpp#LEI

A Legal Entity Identifier (LEI) is a globally unique 20-character alphanumeric code that identifies legally distinct entities participating in financial transactions, as defined by ISO 17442. A 20‑character code used globally for financial and regulatory reporting. Required for companies involved in financial transactions. Used by regulators, banks, customs, and some trade systems.
belongs to
Actor identifier scheme c
has facts
identifier example value dp "529900T8BM49AURSDO55"
identifier maximum length dp "20"^^integer
identifier minimum length dp "20"^^integer
identifier scheme issuer dp "ISO"

modelni back to ToC or Named Individual ToC

IRI: https://w3id.org/eudpp#model

According to ESPR Art 9 (2d) the digital product passport is to be established at model, batch or item level, and the definition of such levels is given by delegated acts; The term ‘model’ usually refers to a version of a product of which all units share the same technical characteristics relevant for the ecodesign requirements and the same model identifier (ESPR preamble (33)).
belongs to
Product identifier granularity c

SKUni back to ToC or Named Individual ToC

IRI: https://w3id.org/eudpp#SKU

A Stock Keeping Unit (SKU) is an internal identifier assigned by an organization to uniquely identify and track a product, item, or variant within its own inventory and management systems.
belongs to
Product identifier scheme c
has facts
identifier example value dp "ABC-RED-XL"
identifier maximum length dp "50"^^integer
identifier minimum length dp "1"^^integer
alt Label ap "Stock Keeping Unit"@en

Legend back to ToC

c: Classes
op: Object Properties
dp: Data Properties
ni: Named Individuals

Acknowledgments back to ToC

The authors would like to thank Silvio Peroni for developing LODE, a Live OWL Documentation Environment, which is used for representing the Cross Referencing Section of this document and Daniel Garijo for developing Widoco, the program used to create the template used in this documentation.