CADO SAF Registry, 123Carbon, and Assure SAF Registry Collaborate on Interoperability Pilot to Strengthen SAF Attribute Integrity across Sectors

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February 24, 2026

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(123Carbon) The Civil Aviation Decarbonization Organization (CADO), 123Carbon, and Assure SAF Registry have agreed to collaborate to implement interoperability between their respective Sustainable Aviation Fuel (SAF) registries. The focus of the collaboration is to exchange verified SAF attribute integrity information among the registries, which is critical for the wider adoption of SAF globally.

“Ensuring the integrity of SAF registries is essential for the market to scale. Through this collaboration and pilot, the CADO SAF Registry and partners are putting in place the shared checks and standards needed to eliminate any risk of double counting and to maintain a single, trusted record of SAF emissions reduction claims. This will promote harmonization and standardization and increase transparency, all necessary in any market creation and all sorely lacking at the current junction. The prevailing fragmentation and bespoke nature of the SAF market are preventing rapid deployment and slowing airlines’ decarbonization. We are thrilled to partner with 123Carbon and 4Air in the interest of promoting a mature and global SAF market,” said Michael Schneider, CADO Executive Director.

“As a multimodal registry with over 150 users, 123Carbon is committed to not only providing integrity and trust, but also support efficient market transactions. The big advantage of this collaboration is that it provides an open technology-based ecosystem between peers, without adding an extra governance layer. This pilot is only the first step in providing additional trust by avoiding double issuance of certificates. Since every registry has its own stakeholder group, the market expects us to collaborate. This means that deeper levels of interoperability are needed to support the market, by allowing transfers of certificates between registries,” said Jeroen van Heiningen, Managing Director, 123Carbon.

“Trustworthy SAF attribute tracking and defensible voluntary and regulatory claims depend on strong integrity controls across the entire ecosystem. Through 4AIR and the Assure registry, we focus on reinforcing that cornerstone via data transparency and validation. This interoperability pilot puts shared safeguards in place to substantiate SAF attributes across registries, identify duplication risks early, and preserve the credibility of SAF claims as the market expands and evolves,” said Jessica Masters, SAF Director, 4AIR.

The details

This collaboration aims to safeguard SAF attribute integrity by ensuring that SAF attributes representing the same emissions reduction are not registered, transferred, or retired more than once, thereby minimizing the risk of double issuance and double counting. By combining complementary market coverage, interoperability supports stakeholders across varied operational environments through a common integrity framework.

This will be tested in a pilot project over the first half of 2026. The pilot’s focus is on ensuring that the three systems align regarding key data requirements, shared terminology, and standardized interfaces, allowing them to exchange and reconcile SAF attribute information in a secure, confidential manner.

Interoperability of the participating registries will be managed by a committee with representatives from all participating registries. This structure will facilitate the inclusion of other registries meeting agreed integrity standards.

If you'd like to learn more about the collaboration, follow the link here: https://www.cado.org/en/updates/

About CADO
The Civil Aviation Decarbonization Organization (CADO) was created in March 2025 to maintain and operate the IATA-developed SAF Registry. It is a not-for-profit organization established under Canadian law with its headquarters in Montreal.

CADO’s mission is to unite stakeholders across the SAF value chain and provide essential SAF market infrastructure – such as the CADO SAF Registry - with a view to creating a global, liquid, transparent, and open SAF market in which all producers and airlines can participate. This is necessary to scale up SAF supply and achieve net-zero CO2 emissions from air transport by 2050.

About 123Carbon
Developed collaboratively with the industry, for the industry, 123Carbon’s platform is an independent integrated registry for the verification, issuance, management and allocation of Environmental Attribute Certificates (EAC’s) to downstream supply chain partners (forwarders, cargo owners, and corporates) across all modalities.

For the SAF market, we provide a fully airline-branded solution and partner with Skymetrix (the leader in aviation fuel and cost management solutions, supporting 135+ airlines) to offer an integrated fuel solution for both kerosene and SAF. For more information, please visit www.123carbon.com or contact us at info@123carbon.com

About Assure SAF Registry
Developed by aviation sustainability pioneer, 4AIR, the Assure SAF Registry is a cutting-edge blockchain-based platform designed to accelerate the adoption of sustainable fuels like SAF. By providing transparency, traceability, and comprehensive data collection, analysis, and secure sharing, it supports informed decision-making and regulatory compliance.

It serves as a robust inventory management tool and registry to support physical or book-and-claim transactions. The registry fosters collaboration between fuel producers, distributors, airlines, and operators, ensuring that sustainable aviation solutions meet both industry goals and regulatory requirements. Learn more at assuresafregistry.com READ MORE

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IATA and 123Carbon to Collaborate on Interoperability for SAF registries (123Carbon)

Excerpt from 123Carbon: The International Air Transport Association (IATA) and 123Carbon announced a strategic collaboration to develop interoperability between their respective Sustainable Aviation Fuel (SAF) registries. Interoperability will increase transparency, avoid emissions reporting errors —including double issuance— and streamline certificate management across SAF registries.

The collaboration between IATA and 123Carbon will focus on three key elements:

A unique identifier and alignment of the relevant data points to exchange between registries.
A process for the exchange of information to avoid any potential double issuance.
A dispute resolution process.

“User trust is essential. The transparency that comes with interoperability will ensure that our registries can function cohesively to maximize SAF’s potential to support aviation’s decarbonization. The broader the alignment among registry providers, the better. We welcome all entities active in this field to work with IATA and 123Carbon towards global interoperability between all registries,” said Marie Owens Thomsen, IATA’s Senior Vice President Sustainability and Chief Economist.

“123Carbon is committed to establishing integrity and trust in the market for Environmental Attribute Certificates (EACs) within multi-modal transportation (e.g. air, sea, road & rail). With IATA, we have found a strong partner in the aviation sector that shares our beliefs. This collaboration allows SAF providers, airlines, freight forwarders, and corporate entities to utilize our platforms without the concern of double issuance, whilst managing their SAF certificates digitally on our platform,” said Jeroen van Heiningen, Managing Director, 123Carbon.

IATA and 123Carbon will seek engagement with other SAF stakeholders to join this initiative to deepen the interaction between registries.

About the IATA SAF Registry

The IATA SAF Registry will launch in April 2025 with the aim to facilitate the broadest possible use of SAF in aviation’s decarbonization by standardizing the market for SAF certificates. SAF certificates are issued after a SAF batch is registered and contains product and environmental attribute information. As part of its preparation for the Registry’s launch, IATA recently released the IATA SAF Accounting and Reporting Methodology.

The development of the IATA SAF Registry is supported by over 50 organizations, including airlines, fuel producers, and State authorities. In developing the IATA SAF Registry, IATA is also consulting with a broad range of SAF stakeholders, including 123Carbon.

About 123Carbon

With over 50 global users, 123Carbon is the first independent platform for carbon insetting across all transport modes. It supports fuel suppliers, fleet operators, forwarders and cargo owners in the issuance, management and transfer of Environmental Attribute Certificates (EACs) across all modalities and all technologies, including SAF. Next to the central registry, 123Carbon also offers a private Book & Claim solution that SAF suppliers and airlines can use to allocate company-branded SAF certificates to their customers in a private environment. This is also regarded as a critical instrument for forwarders that operate across different transport modes and are seeking a single solution to allocate their environmental benefits. READ MORE