4AIR has created its Assure SAF Registry, which it described as a "blockchain-based web registry designed to document, trace and account for the sustainability attributes of sustainable aviation fuel (SAF)".
The registry is to help account for SAF, which 4AIR said is "co-mingled in airport pipelines or fuel farms under mass balance or book and claim chains of custody, making it laborious to document."
But the registry "provides complete transparency about the type of SAF purchased, the feedstock used, the blend of the fuel, and any sustainability certifications earned or regulatory programs for which the fuel may be eligible," 4AIR said, adding that the system protects "suppliers’ commercially sensitive and confidential data".
“Most SAF today comes from one to two different feedstocks with a narrow range of blends. As SAF expands to new feedstocks and higher blends, transparency about the fuel and where it came from will be critical in efforts to scale its use across the industry, including both business and commercial aviation,” said Kennedy Ricci, president of 4AIR.
“Assure SAF Registry will provide a key piece of infrastructure for the transparent scale-up of SAF in aviation, providing transparency to emission claims around SAF while maximising the value for the operator," Ricci added.