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. #BTC Price Analysis# #Macro Insights# $BTC $XRP