By Bitcoin News | Created at 2026-09-30 16:09:07 | Updated at 2026-09-30 21:53:22
5 hours ago
Brazilian state-owned energy firm Petrobras is testing Cardano’s blockchain to track the environmental benefits of renewable fuels, expanding an experiment aimed at making emissions claims easier to verify.
Key Takeaways
- Petrobras is testing Cardano blockchain tools to track environmental claims tied to sustainable aviation fuel and renewable diesel.
- The systems are designed to create verifiable records and reduce risks such as double-counting emissions benefits.
- The projects are still in the research-and-development stage, but show growing corporate interest in blockchain for supply-chain and sustainability reporting.
Putting Energy Evidence on Cardano
The state-controlled oil company is working with the Cardano Foundation and researchers at PUC-Rio on two applications built on the Cardano blockchain, according to an announcement Wednesday. One project focuses on sustainable aviation fuel, while the other tracks Petrobras’s renewable diesel product, known as Diesel R.
The initiatives reflect a broader effort by companies to use blockchain systems for record-keeping beyond cryptocurrencies, particularly in supply chains where information can be spread among producers, transportation companies, and customers.
For sustainable aviation fuel, the project uses a “book-and-claim” system that allows the environmental benefit associated with a quantity of cleaner fuel to be assigned separately from the physical fuel itself. Cardano’s blockchain records where the benefit originated and who ultimately claimed it, with the goal of preventing the same benefit from being counted more than once.
The system can also generate certificates for individual airline passengers. Travelers can enter their departure and destination airports and receive a digital record tied to an allocation of sustainable aviation fuel, according to the Cardano Foundation.
A separate project applies similar technology to Diesel R. It creates digital checkpoints as the fuel moves through production, transportation and use, producing what the developers describe as a continuous record of its lifecycle. The system is intended in part to support reporting of so-called Scope 3 emissions—indirect greenhouse-gas emissions generated throughout a company’s supply chain.
“The energy transition will depend as much on trust as it does on new fuels,” said Cardano Foundation LATAM Business Development Lead Rafael Fraga, in a statement. “As value chains become more complex, proving where environmental data comes from, how it moves, and who can rely on it becomes critical. Public blockchain gives us the opportunity to make that trust part of the system by design, providing industries with a shared, verifiable foundation for the next generation of energy markets.”
Blockchain as Key Infrastructure
Both projects remain part of an ongoing research-and-development collaboration rather than a broad commercial rollout. But they offer another example of large corporations exploring public blockchains as infrastructure for verifying business and environmental data, particularly when records cross organizational boundaries.
For Petrobras, the experiments place blockchain alongside renewable fuels as part of a wider effort to document—and substantiate—claims tied to the energy transition.
The Cardano announcement comes one day after Brazilian financial market infrastructure firm CSD BR said it would begin mirroring records for shares of BTG Pactual investment funds on the XRP Ledger. CSD BR, which said it has more than $4.2 trillion (22 trillion reais) in registered assets, will continue to maintain the legally authoritative records in its existing systems; the blockchain will initially serve as an additional layer for verification and auditing.
