Nexus Standards · Open standards development · Crosswalk

Open standards development

Open standards development: crosswalk to external standards

The external standards in the crosswalk domains of open standards development, from the register, with the relation of each to the Nexus Standards. Each row links to the issuing body, and each relation is evidenced by attestations identified by UNIs (Unique Nexus Identifier).

Back to Open standards developmentAll programme areas
01Canvas

The process.

Crosswalk graph · open standards developmentNexus Standards registry
Open standards development: crosswalk42 nodes on four orbits (Nexus Standards and implementing repositories at the centre, then domains, external standards and issuing bodies), joined by 46 recorded relations.
Nexus StandardsDomainsExternal standardsIssuing bodiesImplementing repositories

2 Nexus Standards · 2 domains · 21 external standards · 17 issuing bodies · 0 implementing repositories. Relations (adopt, profile, crosswalk, cite) are as recorded in the register; names and standards remain with their stewards.

Crosswalk graph42 nodes and 46 links from the registry of external standards, programme areas and implementations (registry/external-standards.yaml, registry/consumers.yaml. Relations (adopt, profile, crosswalk, cite) are shown as recorded in the register.

02Standards development and governance

Standards development and governance

12 register entries.

StandardBodyVersionRelationAccessVerified
OGC Technical Committee Policies and ProceduresOpen Geospatial Consortium05-020r29citeopenverified
RFC 6852 Affirmation of the Modern Paradigm for Standards (OpenStand principles)IAB, IEEE-SA, IETF, Internet Society, W3CInformational RFC (January 2013); affirmation signed 29 August 2012adoptopenverified
ISO/IEC Directives, Part 1 (procedures) with Consolidated ISO Supplement, and Part 2 (drafting)ISO and IECPart 1 and ISO Supplement edition 2024 (V01/2024); Part 2 edition year UNVERIFIEDciteopenverified
RFC 2026 The Internet Standards Process - Revision 3 (BCP 9)IETFRFC 2026 (1996) with BCP 9 amendments; draft-ietf-procon-2026bis in progress (2026)citeopenverified
W3C Process Document (2025)World Wide Web Consortiumeffective 18 August 2025; Proposed Recommendation phase removedciteopenverified
OASIS Technical Committee Process and IPR PolicyOASIS Opencurrent TC Process; IPR Policy adopted 20 January 2005 with later revisionsciteopenverified
Regulation (EU) No 1025/2012 on European standardisationEuropean Parliament and Council25 October 2012 (UK retained copy at IP completion day)citeopenverified
UK Government Open Standards PrinciplesUK Cabinet Office2012, updated 4 May 2018citeopenunverified
WTO TBT Agreement Annex 3: Code of Good Practice for the Preparation, Adoption and Application of StandardsWorld Trade Organization1995adoptopenunverified
ISO/IEC 17065:2012 Conformity assessment - Requirements for bodies certifying products, processes and servicesISO/CASCO2012citepaywalledunverified
ISO/IEC 17029:2019 Conformity assessment - General principles and requirements for validation and verification bodiesISO/CASCO2019citepaywalledunverified
Web Content Accessibility Guidelines (WCAG) 2.2W3C2.2adoptopenunverified

Unverified entries rest on a secondary source for at least one field, as indicated in the register.

03Canvas

Crosswalk evidence.

Canvas · crosswalk evidenceProcess diagram
Open standards development: how a relation to an external standard is evidencedRegister entries for the area by domain and relation. NS-14 specifies the evidence each relation requires and the form in which a claim may be displayed. Names and standards remain with their stewards.

Fig.Relations recorded for the area and the evidence NS-14 requires before a relation is displayed.

04Earth observation

Population, settlement and hazards worldwide

The map is framed on the world as context for open standards development. Shown at first: population density, 2020 (Gridded Population of the World v4.11, NASA SEDAC, CIESIN, Columbia University) and night-time lights, daily (VIIRS Black Marble, VNP46A2, NASA LAADS DAAC). The layer drawer adds flood water, 3-day composite (VIIRS Global Flood Product); active fires and thermal anomalies, last day (VIIRS NOAA-20 375 m, FIRMS); and true colour (VIIRS NOAA-20 corrected reflectance). NASA products are served through NASA GIBS under NASA's open data policy, with acknowledgement; population density is GPW v4.11 by CIESIN, Columbia University, under CC BY 4.0; coastlines, boundaries and place names come from NASA GIBS reference layers (© OpenStreetMap contributors, ODbL) and Natural Earth (public domain). Each layer shows its own observation date; full credits are given under the map. Other sources of the profile, such as IETF Datatracker API and W3C technical reports feed, are listed for reference.

The interactive map needs JavaScript; the layer list and sources are below.

Layers 2

People and hazards

Latest available

NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Blue Marble (NASA) · © OpenStreetMap contributors (ODbL) · Natural Earth

Loading the latest NASA imagery.

Drag to move. Ctrl or ⌘ and scroll, pinch or the buttons to zoom; hover for the values under the pointer; reset returns to the region.

Where people live, night-time lights and the floods and fires public institutions answer to, framed on World.Satellite and model products as NASA publishes them, each with its own date; indicators, not assessments of any place.

Data: NASA GIBS · ASTER GDEM · Blue Marble · © OpenStreetMap contributors · Natural Earth · NASA EONETSources and licences

  • We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Center for International Earth Science Information Network (CIESIN), Columbia University. 2018. Gridded Population of the World, Version 4 (GPWv4): Population Density, Revision 11. NASA Socioeconomic Data and Applications Center (SEDAC). Licensed under CC BY 4.0. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). doi:10.7927/H49C6VHW. CC BY 4.0
  • VIIRS Black Marble night-time lights, NASA Goddard Space Flight Center; distributed by the NASA Level-1 and Atmosphere Archive and Distribution System (LAADS DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • VIIRS near-real-time products (flood, land surface temperature, snow cover, corrected reflectance), NASA LANCE; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • NASA Fire Information for Resource Management System (FIRMS), VIIRS 375 m active fire product, NASA LANCE; vector tiles via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • ASTER GDEM is a product of METI and NASA (ASTER Global Digital Elevation Model V003, NASA LP DAAC); imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). Cite as: NASA/METI/AIST/Japan Spacesystems and U.S./Japan ASTER Science Team (2019). ASTER Global Digital Elevation Model V003. doi:10.5067/ASTER/ASTGTM.003. NASA open data
  • Made with Natural Earth. Free vector and raster map data @ naturalearthdata.com. Public domain
  • © OpenStreetMap contributors (ODbL), via NASA GIBS (coastlines, boundaries, roads and place names). Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). ODbL
  • Blue Marble, NASA Earth Observatory; imagery via NASA GIBS. Colours redrawn from the published colour map; values averaged into H3 cells where shown (modified). NASA open data
  • Context on the globe and flat map: coastlines, boundaries, roads and place names from NASA GIBS reference layers (OpenStreetMap data, ODbL, © OpenStreetMap contributors); Blue Marble imagery as an optional base; 3D terrain and the elevation read-out from the ASTER GDEM elevation colour index (5 m to 200 m classes, exaggerated for legibility). Boundaries are drawn as published and imply no position on any territory.
  • Globe: MapLibre GL JS 6.9.1, BSD-3-Clause, © MapLibre contributors.
  • Live: NASA EONET Events are indicative, not authority warnings.
  • NASA GIBS: We acknowledge the use of imagery provided by services from NASA's Global Imagery Browse Services (GIBS), part of NASA's Earth Science Data and Information System (ESDIS).
  • Optional layers (3 sources in the layer list: live, forecast, observed and context) print their provider credit on the map and here when switched on; forecasts are model output and derived indices are estimates.

Layers and dates

  • Population density, 2020: Population: CIESIN, Columbia University, Gridded Population of the World v4.11 (2018), NASA SEDAC, CC BY 4.0 · static
  • Night-time lights, daily: VIIRS Black Marble (VNP46A2), NASA LAADS DAAC · 12 Oct 2026
  • Flood water, 3-day composite: VIIRS Global Flood Product, NASA LANCE · 14 Oct 2026
  • Active fires and thermal anomalies, last day: VIIRS NOAA-20 375 m (FIRMS), NASA LANCE FIRMS · 13 Oct 2026
  • True colour: VIIRS NOAA-20 corrected reflectance, NASA LANCE · 13 Oct 2026

05Licensing and intellectual property

Licensing and intellectual property

9 register entries.

StandardBodyVersionRelationAccessVerified
SPDX License ListSPDX Legal Team (Linux Foundation)3.27.0 (1 July 2025) per packaging metadataadoptopenunverified
RFC 5378 Rights Contributors Provide to the IETF Trust (BCP 78) and IETF Trust Legal ProvisionsIETF TrustBCP 78; Revised BSD License for code componentsciteopenunverified
W3C Software and Document License (2023 version)World Wide Web Consortiumin effect since 1 January 2023adoptopenverified
The Open Source DefinitionOpen Source Initiative1.9 (last modified 22 March 2007); ten criteriaadoptopenverified
The Open Source AI DefinitionOpen Source Initiative1.0 (October 2024)citeopenverified
Open Definition 2.1Open Knowledge Foundation2.1adoptopenverified
Creative Commons Attribution 4.0 International (CC BY 4.0) as used for specification textCreative Commons4.0adoptopenverified
ODRL Information Model 2.2W3C2.2adoptopenunverified
REUSE SpecificationFree Software Foundation Europe3.3adoptopenunverified

Unverified entries rest on a secondary source for at least one field, as indicated in the register.

06Relations

Relation types and their evidence

RelationMeaningEvidence
citeThe Nexus Standard refers to the external standard as context.Identifier, version and URL in the register.
profileThe Nexus Standard constrains or specialises an open external standard (for example STAC, DCAT, PROV-O, DataCite, CAP).Conformance tests against the external standard's own validator where one exists.
crosswalkElements of the external standard map to Nexus elements (clauses, record fields).A crosswalk table in the register entry; each row cites the external clause by number, never by text.
adoptThe Nexus Standards use the external standard as it is for a function (for example ISO 3166-1, SPDX, ORCID, ROR).Validation of values against the external scheme.
extendA Nexus Standard adds machine-readable, real-time or provenance elements that the external standard lacks.The extension is a Nexus clause or field; the external standard is cited as the baseline.
gapNo external standard covers the concern; a Nexus Standard specifies it.The gap statement in the landscape study.
07Questions

Questions and answers.

Does a crosswalk establish that a open standards development artifact conforms to these standards?
A crosswalk is a mapping. A relation is displayed as clauses derived from the external standard and their current results; any determination of conformity with an external standard rests with the body entitled to make it.
Why are some relations shown as compatibility profile (restricted)?
The standard is paywalled. Its text is not reproduced, and a compatibility profile of it is published only under an institutional arrangement with the issuing body.
Why are some entries marked unverified?
An unverified entry rests on a secondary source for at least one of name, body, version or year; NS14-R5 requires it to be shown as unverified.
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Status and use. The Nexus Standards are proposed standards developed through an open process under NS-13 and published for voluntary use; they do not constitute certification, accreditation or regulatory approval, and adoption remains a decision of the Global Standards Council and, in each country, of its National Standards Council. A UNI (Unique Nexus Identifier) identifies an artifact; it does not certify it. Names of standards bodies and their standards belong to their stewards and are used only to identify the documents; no text of an external standard is reproduced here. Nexus Standards is not affiliated with, endorsed by or certified by any standards body named here.

Licences: CC BY 4.0 for standards text, registries, schemas and data; Apache-2.0 for reference code. External standards are cited by name, number and link under their own licences. Third-party data, libraries and fonts keep their own licences: see Third-party notices.

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