Cardano fuel tracking pilots.
Petrobras partners with Cardano to develop blockchain pilots for tracking low-carbon fuels.
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Key Points
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The sustainable aviation fuel project separates the environmental benefit from the physical fuel: an airline may acquire the benefit even when the fuel itself is used on another flight.
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The SAF attributes are to be represented by standardized CS-SAF tokens that can be issued, transferred and permanently retired after the environmental benefit is used.
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Diesel R can contain renewable raw materials such as vegetable or animal fats, according to the report.
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Cardano’s LATAM Business Development Lead Rafael Fraga said, “The energy transition will depend as much on trust as it does on new fuels,” emphasizing the importance of proving the origin and movement of environmental data.
Petrobras, Brazil's state-controlled oil company, is testing Cardano blockchain technology to track lower-carbon fuels and prevent double-counting of environmental benefits CoinCodex. The two research projects, developed with the Cardano Foundation and PUC-Rio's Ledger Labs, target sustainable aviation fuel and Diesel R, a renewable-content diesel blend CoinCodex. The initiatives remain in early testing stages with no announced timeline for commercial deployment.
The sustainable aviation fuel system uses standardized CS-SAF tokens on the Cardano blockchain to track who owns environmental benefits, preventing the same reduction from being claimed twice CryptoNews. A separate project will follow Diesel R through production, transport, and use to support emissions reporting CryptoNews. Rafael Fraga, Cardano's LATAM Business Development Lead, said the energy transition will depend "as much on trust as it does on new fuels."
How Book-and-Claim Creates Double-Counting Risks
Sustainable fuel markets use a system called book-and-claim, which separates physical fuel from environmental benefits DailyCoin. An airline can buy and claim carbon reductions even if that fuel gets used on a different flight. Without tracking, one batch of fuel can have its benefits claimed multiple times by different companies.
Blockchain solves this by creating a permanent record BiomassMagazine. When an airline claims a CS-SAF token's environmental benefit, the token is retired and locked in the system. No one else can use that same benefit again.
Sustainable Aviation Fuel Gets a Digital Ownership Trail
Petrobras makes sustainable aviation fuel by blending conventional jet fuel with renewable feedstocks at its Duque de Caxias refinery CryptoNews. The new system tokenizes each batch's environmental attributes on Cardano, stamping them with a unique digital identifier. Each token records the fuel's origin, transfer history, and who claimed its benefits.
Passengers will soon use a tool to calculate their flight's sustainable fuel allocation CoinCodex. After entering departure and arrival airports, travelers receive a digital certificate linked directly to the specific fuel batch used CoinCodex. The system cross-checks all claims against CORSIA, an international aviation emissions standard, before tokens are minted.
Tracking Renewable Diesel From Refinery to Engine
The second project follows Diesel R—a fuel made partly from renewable materials like vegetable and animal fats—across production, transport, and use EthanolProducer. Digital checkpoints record each stage of movement. Companies use this data to report Scope 3 emissions, the hardest emissions category to track because it involves suppliers and customers outside direct company control.
This transparency helps prevent greenwashing, where companies falsely claim environmental benefits BiomassMagazine. Auditable records on a public blockchain mean regulators and customers can verify actual renewable content and emissions reductions, not just corporate promises BiomassMagazine.
Still Years Away From Real-World Rollout
Both projects launched as research pilots in September 2026 and remain in testing CoinCodex. Petrobras and the Cardano Foundation have not disclosed how much fuel is being tracked, which airlines are participating, or when commercial use might begin CoinCodex. The technology must prove itself before scaling to industry-wide deployment.
If successful, the framework could become a template for blockchain emissions tracking across energy markets globally DailyCoin. Brazil's oil and gas sector is projected to reach $28.82 billion by 2031, making large-scale adoption economically significant DailyCoin.
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