Petrobras tests Cardano for sustainable aviation fuel tracking
Cardano (ADA)
Editor:
Eugene Serbin
cryptocurrency.com.tr reports that Petrobras is using Cardano to track sustainable aviation fuel benefits. The Brazilian energy giant is testing the blockchain to prevent double-counting of environmental attributes. The Cardano Foundation announced this collaboration on September 30.
The project involves Petrobras, PUC-Rio University's Ledger Labs, and the Cardano Foundation. It focuses on Petrobras' renewable fuel brand, Diesel R. The system addresses issues where fuel buyers differ from environmental benefit buyers. It uses a Book-and-Claim model for these transactions.
Environmental attributes are represented as standardized CS-SAF tokens on Cardano. These tokens can be created, transferred, checked, and retired. Retirement ensures the same attribute is not claimed twice. The digital record traces allocation back to the original fuel certificate.
How the market reacted
Whalio's own Binance spot order flow for ADA, measured when this story was written up on 1 October 2026. Not the outlet's figures.
ADA trades at $0.2466 with a 1-hour buy ratio of 50.7% against a 24-hour ratio of 48.4%. This indicates that buying pressure is currently building in the short term compared to the daily average. The 1-hour volume delta is positive at $36,110, while the 4-hour delta is negative at -$237,462. A positive volume delta means buyers are spending more than sellers are receiving, while a negative delta shows the opposite. The 24-hour cumulative volume delta is +$449,311, suggesting net buying over the full day. Spot volume reached $35,362,507 with 194,612 trades recorded.
The latest daily buy ratio of 45.6% sits at the 5th percentile of the last 322 days, against a median of 49.2% - among the weakest buying days it has had.
Was that an ordinary day?
The same Binance spot measurements for ADA, averaged over the days leading up to the story.
Over the preceding week, the average buy ratio was 50.7%, matching the current 1-hour reading. The latest day shows a buy ratio 2.3 points lower than this weekly average. Volume was 0.75 times the average, indicating a quieter trading day than usual. The price changed +3.4% over eight days, with a total volume delta of +$3,704,367. This represents an ordinary day for the coin, with five of seven days showing net buying.