[Petrobras Chooses Cardano Blockchain to Track Clean Aviation Fuel and Diesel] According to Deep Tide TechFlow on September 30, as reported by CoinDesk, Brazilian state-owned energy giant Petroleo Brasileiro SA (Petrobras) has selected the Cardano blockchain as the tracking infrastructure for its sustainable aviation fuel (SAF) and renewable diesel supply chain. Petrobras is currently developing applications based on this technology to conduct two studies aimed at addressing compliance challenges in energy transactions: first, to prevent double counting of emission reduction benefits within complex supply chains, and second, to ensure full traceability of fuel data from production to end-use. As Petrobras actively expands its biofuel production capacity and invests in renewable facilities, the adoption of Cardano's decentralized ledger is seen as a key initiative to enhance the transparency of its green assets and reduce the costs of carbon footprint audits.