TLDR
- Petrobras developed CS-SAF with PUC-Rio’s Ledger Labs and the Cardano Foundation.
- The Cardano-based platform tracks sustainable aviation fuel environmental attributes as digital tokens.
- CS-SAF records token issuance, allocation, and retirement to reduce duplicate claims.
- Petrobras’ SAF production at Duque de Caxias has received CORSIA sustainability certification.
- The case study does not disclose airline users, fuel volumes, or the number of retired claims.
Petrobras has developed a Cardano-based platform to track sustainable aviation fuel claims. The CS-SAF project links Petrobras, PUC-Rio University’s Ledger Labs and the Cardano Foundation. It records fuel sustainability attributes as digital tokens tied to CORSIA requirements.
Cardano System Tracks Fuel Claims
CS-SAF uses a book-and-claim model, which separates environmental benefits from physical fuel delivery. Buyers can purchase the sustainability benefit of certified fuel even when they cannot receive that fuel directly.
The platform checks certificates before creating tokens that represent approved fuel attributes. It can then allocate tokens to airlines or passenger journeys based on emissions calculations. Once a buyer makes a claim, the system retires the token on-chain.
Separating fuel delivery from environmental claims creates a need for reliable records. Each record must show where an attribute came from, who received it and whether someone has already used it. Cardano network activity shows how the blockchain continues to support new uses beyond token trading.
CS-SAF also includes an app that lets passengers claim tokens and receive a certificate. Petrobras produces sustainable aviation fuel at its Duque de Caxias refinery through co-processing petroleum inputs with renewable materials.
Certification Remains Central to SAF
Petrobras says its aviation fuel has received CORSIA sustainability certification. CORSIA requires eligible fuels to come from producers approved through recognised certification systems. Auditors still need evidence covering feedstocks, production methods and lifecycle emissions.
A blockchain record can help trace a certificate after issue, but it does not replace fuel certification. Recent U.S. guidance on blockchain records shows that regulators can accept digital records when they meet existing recordkeeping rules and remain reliable and accessible.
The public case study does not name airline customers, state fuel volumes, or report how many tokens users have retired. Those figures would show how widely Petrobras and its partners use Cardano for sustainable aviation fuel accounting.
The market is testing tokenized systems for assets and records, including tokenized stocks used as collateral. For CS-SAF, future reporting on claim volumes, audit times, and registry links would show how the platform performs across fuel transactions.
CS-SAF serves as a research system for tracking certified fuel attributes, not as proof that regulators accept Cardano for CORSIA reporting. Its records can support tracing, while certification rules still determine whether a sustainable aviation fuel claim qualifies.
