[3] World Economic Forum. The Future of Financial Infrastructure: An ambitious look at how blockchain can reshape financial services. 2016. https://www.weforum.org/reports/the-future-of-financial-infrastructure-an-ambitious-look-at-how-blockchain-can-reshape-financial-services
[4] McKinsey & Company. Global Payments Report 2021. https://www.mckinsey.com/industries/financial-services/our-insights/global-payments-2021
[5] Corbett J. et al. Spanner: Google's Globally-Distributed Database. 2012. https://research.google/pubs/pub39966/