Connecting carbon markets through open data



Climate Action Data Trust is a global platform that links, aggregates and harmonises all carbon credit data from project registries to facilitate transparent accounting.

The CAD Trust open-source metadata system uses distributed ledger technology to create a decentralised record of carbon market activity with the aim to avoid double counting, increase trust in carbon credit data and build confidence in carbon markets.

Launching in December 2022

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Introduction to CAD Trust

Part of the Climate Warehouse End-to-End Digital Ecosystem


  • 2022

    26th October

    Global Announcement

    IETA launches the Climate Action Data website and communication channels and reveals information on the forthcoming launch of the fully operational metadata layer.

  • 2022


    Climate Action Data Trust at COP27

    Series of panel discussions hosted by IETA and the World Bank focused on leveraging digital infrastructure for carbon markets.

  • 2022

    7th December

    Official Launch

    Official launch of the Climate Action Data Trust at the Asia Climate Summit 2022 in Singapore. Registration will open soon through the IETA website.

Testing Simulation Data

  • 30

    Participating Organisations

  • 11

    National Governments

  • 58

    Testing Sessions

  • 37%


  • 17%

    Independent Standards

  • 20%

    Multilateral Organisations

  • 27%

    Other Private & Public Market Participants


  • East & West Africa,
  • Europe,
  • Middle East,
  • North America,
  • Latin America,
  • Caribbean,
  • South & East Asia,

Founding Partners & Supporters