*2.1. Plan the Review*

The current review was built on top of the findings of our previous work presented in [6]. In particular, our earlier research indicated that blockchain offers novel opportunities for vehicle owners to engage in the IoV. However, further research is needed into the DRM. Therefore, continuing our work, the detailed description of the SLR methodology and review protocol can be found in that article. Following that, several components of the current review process were directed by the research questions, including setting inclusion and exclusion criteria, searching for relevant studies, gathering data and presenting findings. The current systematic literature review aims to answer the following main question:

### *SLR Question: How can blockchain technology assist the area of demand response management in IoV-assisted smart grids?*

We identified a set of search queries and databases, while planning the review. It is worth noting that the systematic literature search began in 2017 and spanned the previous five years of research innovation and progress. The search database sources were IEEEXplore, SpringerLink, ScienceDirect, ACM Digital Library and Google Scholar. Because this study focused on the scientific knowledge of blockchain adoption in the IoV concept, we emphasized literature published in academic journals, conference proceedings, and book chapters. Then, we defined the SLR's keywords and the queries that were used in the aforementioned databases (Table 1).
