Increased and sustained access to the formal financial system enables communities to better meet their basic needs, prepare for and respond to unexpected shocks, and achieve broader economic growth. Yet many emerging economies like those across Latin America continue to face barriers that prevent individuals, households, and businesses from accessing the formal financial system. Financial inclusion efforts that leverage technological innovation are well suited to address some of them. Specifically, fintech products built on blockchains offer new ways to access financial services by creating pathways that do not rely on traditional infrastructure. Blockchain-based services offer easier financial access, innovative credit opportunities, and capital formation in a decentralized financial environment. While blockchain and DeFi are still in their early stages, these services have the potential to close some persistent gaps that stand in the way of more inclusive Latin American economies.