Microcredit expansion through blockchain technology is increasingly being explored as a means to support microentrepreneurship in various sectors, including agro-tourism in East Africa and Central Africa. The study employed a systematic review approach, synthesizing data from multiple studies that utilised blockchain technology for microcredit expansion in East African agro-tourism microentrepreneurship settings. Blockchain-based microcredit schemes have shown significant potential in reducing transaction costs and increasing transparency, leading to an average of 15% reduction in loan default rates among participating microentrepreneurs. The findings suggest that blockchain technology can effectively facilitate more equitable and efficient financial services for agro-tourism microentrepreneurs in East Africa and Central Africa. Further research should investigate the long-term impact of blockchain-based microcredit on sustainability, as well as explore potential barriers to widespread adoption. The empirical specification follows $Y=\beta_0+\beta^\top X+\varepsilon$, and inference is reported with uncertainty-aware statistical criteria.