Registries & standardsChecked Sep 2026

CAD Trust

The Climate Action Data Trust is the open metadata layer that links carbon registries to prevent double counting, governed by the World Bank, IETA and Singapore, and its Data Model v2.0, launched in October 2025 with public API documentation from January 2026.

InteroperabilityOpen metadataPublic APIAnti-double-counting
Visit climateactiondata.org
CONNECT-TO RAILS
CAD Trust
Founded2022
HQDistributed (World Bank, IETA, Singapore)
StagePublic-private initiative
API / accessOpen
Founded2022
HQDistributed (World Bank, IETA, Singapore)
StagePublic-private initiative
API / accessOpen
Websiteclimateactiondata.org ↗
EvidenceWell corroborated

Align a project data schema here and it inherits registry interoperability.

What they do

Inside CAD Trust

CAD Trust, the successor to the World Bank Climate Warehouse, is a decentralised metadata layer that harmonises and publishes data from connected carbon registries so credits can be tracked across systems.

It announced Data Model v2.0 on 28 May 2025, refining entity tables, removing redundancies and aligning with Article 6 reporting using the Agreed Electronic Format, with public API documentation open for testing.

Rollout across the 12 connected registries is underway with full transition to v2.0 expected by Q2 2026, and the API lets any organisation download the full harmonised dataset.

Signal

Recent developments

  1. Jan 2026Published public API documentation for Data Model v2.0; roll-out with all 12 connected registries underway, full transition expected by Q2 2026.
  2. Oct 2025Launched Data Model v2.0.
Registries & standards

Explore CAD Trust for a project

Check the provider’s current capabilities, access terms and documentation before selecting a tool or planning an integration.

Visit CAD Trust ↗
SourcesData Model v2.0 launchv2.0 public API documentation
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