[Cardano Secures Pilot with Brazil's National Oil Company to Track Clean Fuel Carbon Footprint] According to CoinDesk, Brazil's state-owned energy company Petrobras is testing the Cardano blockchain for two research projects aimed at tracking environmental claims of low-carbon fuels. The first project focuses on sustainable aviation fuel, recording the attribution and claiming time of environmental benefits to avoid double counting of carbon reductions. The second project targets Diesel R, a diesel made from renewable materials, documenting data across production, transportation, and usage stages to help companies calculate indirect carbon emissions in the supply chain. Both projects are currently in the research phase, with no timeline for broader implementation disclosed yet.