The blockchain technology emerged almost 10 years ago, but for a long time only so-called cryptoenthusiasts demonstrated any interest in it. However, recently blockchain underwent an incredible popularity boost, and the first sector to start considering it as a useful tool for large business was the banking sector. Today oil & gas is also starting to explore blockchain opportunities, which can apply to a number of scenarios, e.g. in fuel retailing. Among them are blockchain implementation in loyalty programmes, electronic trading facilities, contracting jobbers, and controlling the supply chain.