Entity attribute

Entity attribute is one of Demiton's published registers for Australian civil construction. One key/value attribute on a project, worker, asset or other entity, such as a project's stage. Demiton keeps it current from the systems a contractor already runs and publishes the record's shape as a versioned JSON Schema, so the same question works whichever system produced the record.

Part of Counterparties in the register catalog.

Register ID

entity_attributeUse this name to ask for the register. The API calls it a shelf ID.

Each record is

A stateThe current value of something, replaced when it changes.

Status

DeclaredDefined, and fills when a source produces its first record.

Data

OrganisationPrivate to each organisation's own workspace.

Version

v1 (1.0.3)Current version.

Download JSON SchemaSee an example record

Standards

This register's contract was designed against these standards and laws. Holding these records does not by itself certify compliance.

• AS/NZS ISO 19162:2020Geographic information - Well-known text representation of coordinate reference systems (AU/NZ adoption)Australia · 2020 · public summary
• GDA2020 / MGA2020Geocentric Datum of Australia 2020 and Map Grid of Australia 2020 (National Measurement (Recognized-Value Standard of Measurement of Position) Determination 2017)Australia · 2017 Determination (2026 Determination reported, unverified) · public summary
• Privacy Act 1988Privacy Act 1988 - Australian Privacy PrinciplesAustralia · compilation current at 2026-09 · clause APPs 1-13 · public summary
• GDPRGeneral Data Protection RegulationEuropean Union · 2016/679 · public summary
• EPSG Geodetic Parameter DatasetEPSG Geodetic Parameter Dataset (EPSG:7844 GDA2020, EPSG:4326 WGS 84)International · v13.102 · verified against full text
• ISO 19162:2019Geographic information - Well-known text representation of coordinate reference systems (with Amd 1:2023)International · 2019 + Amd 1:2023 · public summary
• OC4IDSOpen Contracting for Infrastructure Data Standard (projectStatus / project phase vocabulary)International · 0.9.5 (page title; version switcher says 0.9.4) · verified against full text
• RFC 7946The GeoJSON FormatInternational · August 2016 · clause Section 4 (CRS is WGS 84) · verified against full text
• NZGD2000 / NZTM2000New Zealand Geodetic Datum 2000 and New Zealand Transverse Mercator 2000 (LINZ)New Zealand · official since 1998; NZVD2016 vertical · public summary
• Privacy Act 2020 (NZ)Privacy Act 2020 - Information Privacy PrinciplesNew Zealand · 2020 No 31 · clause IPPs 1-13 · public summary
• OSGB36 / ETRS89 (OSTN15)British National Grid datum and ETRS89 with OSTN15 transformation (Ordnance Survey)United Kingdom · OSTN15 · public summary
• UK GDPRUK General Data Protection Regulation with Data Protection Act 2018United Kingdom · UK GDPR (retained) + DPA 2018 · public summary
• NAD83(2011) / NAVD 88North American Datum of 1983 (2011) and North American Vertical Datum of 1988 (NGS)United States · NAD83(2011) epoch 2010.00 · public summary

Connectors

Connected today

Demiton keeps this register current from these systems now.

No system fills this register yet.

On the roadmap

Systems in the planned connector rollout that can fill this register. Partial means the system holds only some of its fields.

None planned yet.

Fields

10 fields: 5 required, 5 optional.

Required

Every record carries these fields.

valueTextUnit: per the key (none today carries a unit)

The resolved canonical value: the OC4IDS phase, employment state, opportunity outcome, and so on.

Example: LF - Forklift

shelf_typeText

The pattern instance entity_attribute:{key}; today the only carrier of the attribute identity and of the per-key supersede bucket.

Example: worker

asserted_atDate and timeISO 8601, with time zone

When the value was last asserted by the resolver (valid_from, defaulting to write time)

Example: 2026-06-18T09:00:00+10:00

attribute_keyText

The canonical attribute this row asserts — stage, employment_status, outcome, value, closed_date, project_manager observed; 19 keys declared in all.

Example: high_risk_licence_class

subject_entity_idWhole number

The project, worker, asset or opportunity the attribute is about; the shared subject of the row.

Example: 5503

Optional

Present when the source system records them.

evidenceGroup of fields

The raw resolver signals reconciled to produce the value, kept for auditability.

confidenceNumberUnit: ratio

The resolver's confidence in the value; 1.0 on both resolvers today.

Example: 0.95

valid_untilDate and timeISO 8601, with time zone

The supersession stamp; the live row is valid_until IS NULL, and superseded values are retained as an audit trail.

legal_entityWhole number

The legal entity the assertion is scoped to when the producer knows it.

financial_periodText

The financial period the assertion is scoped to when the producer knows it.

Filed against

Records are indexed along these dimensions, so they can be asked for by any of them.

• Financial periodcontext for the record, from When known
• Legal entitycontext for the record, from When known

Example record

A sample from Bridgeworks Group, Demiton's demonstration company. The values are illustrative; the shape is exactly what the contract describes.

entity_attribute.example.json

{
  "asserted_at": "2026-06-18T09:00:00+10:00",
  "attribute_key": "high_risk_licence_class",
  "confidence": 0.95,
  "shelf_type": "worker",
  "source_id": "form-9931",
  "source_system": "ASSIGNAR",
  "subject_entity_id": 5503,
  "value": "LF - Forklift"
}

Use this contract

The contract is a standard JSON Schema (draft 2020-12) document, so any JSON Schema validator can check a record against it. Keywords starting with x-demiton- add Demiton's own meaning, such as units and requiredness, and validators ignore them.

Schema URL

https://docs.demiton.io/registers/entity_attribute/v1.json

Show the full JSON Schema

Loading the schema…