Petrobras, the Brazilian oil company controlled by the state, has built two applications on the Cardano blockchain, Cointelegraph reported on Sep 30, 2026. The applications record sustainability data for two fuels: sustainable aviation fuel (SAF) and Petrobras's renewable diesel, which it sells as Diesel R.
According to the report, the goal is to track the sustainability claims made about these fuels. Petrobras built the tools as part of a research collaboration that is still ongoing.
The report does not say who else is in the research collaboration. It also does not say whether the applications are in regular use or still being tested, or how much fuel or data they cover.
For someone already holding a perpetual position on Bitget, Bybit, MEXC or OKX, nothing changes directly. The report mentions no change to funding rates, trading fees or exchange liquidity for any contract, including those tied to Cardano's ADA. So far, this is news about a company using a blockchain, not a change in what it costs to hold a position.
Source: cointelegraph — Brazil’s Petrobras uses Cardano to track sustainable aviation fuel, renewable diesel
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