Connecting a Registry to CAD Trust

CAD Trust’s Open Source Software

Enhanced Participation and Value:

The inclusivity of CAD Trust software encourages participation from various carbon registries, amplifying the collective worth of data on the platform. Such enriched data subsequently attracts more user and Service Layer providers.

Prevention of Double Counting:

Comprehensive data coverage allows users to thoroughly evaluate if a project is simultaneously registered under multiple Standards, thereby minimising double-counting incidents.

Public-Good Emphasis:

The open nature of CAD Trust ensures universal access, reinforcing the enterprise’s public-good commitment.

Connect with CAD Trust

We invite both independent standards and national carbon registries to connect. By doing so, your data will be seamlessly integrated into the CAD Trust Data Dashboard, enhancing visibility and accessibility.

Why Connect with Us?

  • Effortless Integration: Our open-source software streamlines the connection process, making it swift, straightforward, and entirely free of charge.
  • Maintain Your Autonomy: Each registry operates its own instance of CAD Trust software, ensuring you maintain control over your data.
  • Standardised Data Model: To ensure consistency and quality, all data must conform to the established CAD Trust data model.

Ready to get started? Follow our detailed steps for a hassle-free connection process.

Two Main Steps


Registry Connection

The process of installing the CAD Trust software and broadcasting registry data to the network


Data Activation

The assessment process each registry needs to undertake before its data can appear in the public dashboard, available on the CAD Trust Data Dashboard


  • Initial Contact

    Contact CAD Trust through their Contact Form. Upon submission, CAD Trust will respond with essential documents for both Registry Connection and Data Activation:

    + Registry Onboarding Guide (Connectivity Protocols & Installation Guide in PDF format) for Registry Connection.

  • Proceed With

    Registry Connection

    Utilising the provided connectivity protocols, establish a data broadcasting connection

    Data Activation

    Complete the Online Application Form


  • Final Steps

    Patiently await the Data Activation Assessment by CAD Trust.

Potential Outcomes

+ Successful Data Activation on CAD Trust’s Data Dashboard.
+ A request for supplementary information.
+ Possibility of Registry denial.

Note: Upon successful application, your data will immediately appear on the CAD Trust Data Dashboard. Plus, you’ll receive a Communication Pack ( Registry Communication Guide and Associated Logos).

CAD Trust Registry Connection & Data Activation

Technical Details

Registries that wish to connect to CAD Trust must install three types of software, which are all publicly available on GitHub:

  • Back-end software: Runs as a standard application
  • User Interface: A tool that helps participants access and update their data
  • Chia software: Enables participants to host a blockchain node by creating a wallet and downloading a copy of the public blockchain and data layer

Once the software has been installed, registries can then broadcast their data to CAD Trust using the following method:

  • API: Dynamic and automated data integration through direct API connection.

The terms “connect”, “onboard” and “integrate” are often used to describe this first part of the process. In this context, we assume they are interchangeable and all describe the same thing. During this connection process, the CAD Trust technical team will share the various connectivity standard and protocols for the registries to implement. This includes:

  • Terms of Use
  • Technology stack set up and requirements
  • Blockchain Node set up
  • API connectivity documentations
  • Data model for ETL process

Data Activation Application

You will need to complete the following steps to activate your data in the Data Dashboard:

  1. If you haven’t already done so, please facilitate an API connection to CAD Trust.
  2. Complete the online application form
  3. Await the CAD Trust Secretariat’s assessment of your application.
  4. If necessary, coordinate with the Secretariat for an extended assessment. This could mean providing references or answering further questions.

If your assessment is rejected, your registry will remain connected to CAD Trust, but the data will not appear in the Dashboard. Instead, users would need to subscribe to your node to access your data. 

The intention of this proposed application process has not been to assess the environmental integrity of the underlying carbon standard, consistent with the objective of maximising participation in the platform and ensuring the capacity of CAD Trust to prevent double counting. Instead, the purpose of the application process has been to ensure that data appearing in the dashboard is sourced from reputable and properly run organisations.

Registries will need to complete an application form which will ask for the following information:

  • The organisation’s address and contact details
  • High level information on the organisation’s business activities and areas of focus
  • Documentation of the organisation’s legal and operational status e.g. an Incorporation certificate and ownership structure
  • Contact details for two designated official contact persons
  • Acknowledgement of CAD Trust’s Communication guidelines

The Secretariat will then evaluate the application. If information is missing or the answers provided are unsatisfactory, the Secretariat will request further information through an enhanced assessment. Where possible the Secretariat will review the data the registry is broadcasting to the CAD Trust network to ensure that data shared with CAD Trust matches data the registry is publishing itself.

Following this assessment, the Secretariat will then take a decision on whether the registry’s data is made available in the CAD Trust Data Dashboard. If their assessment is rejected, the registry will remain connected to CAD Trust, but its data will not appear in the dashboard. Instead, other users will need to subscribe to that registry’s node to access their data.

The CAD Trust Secretariat will also reserve the right to fast-track applications or directly contact registries to display their data in the public dashboard. For instance, the registries of Standards that have been approved for use in CORSIA have been through a rigorous review process and are subject to ongoing regulation by ICAO. In these instances, it should be clear that data from these registries is accurate and reliable, and beneficial for CAD Trust that it is visible in the public dashboard.

Contact Form for

Terms & Conditions

By entering the CAD Trust website and accessing the Data Dashboard, you automatically accept the User Terms & Conditions