  Blockchain is an emerging technology with potential to address issues related
to sustainability. Literature reviews on blockchain and sustainability exist,
but there is a need to consolidate existing results, in particular, in terms of
Sustainable Development Goals (SDG). This extended abstract presents an ongoing
tertiary study based on existing literature reviews to investigate the
relationship between blockchain and sustainability in terms of SDGs. Results
from a pilot analysis of 18 reviews using thematic analysis are presented.
