Abstract
<jats:p>Introduction. The uncertainty and chaos of the world order, the collapse of globalization, the right of force, not the power of law, Russia's war against Ukraine, a quantum leap to a new technological level have highlighted the need to find new financial instruments to ensure transparent management of public finances. Traditional fiscal and monetary mechanisms, although they remain basic, demonstrate limited flexibility in conditions of high uncertainty and geo-challenges, large-scale financial needs and growing demands of international donors for accountability in the use of funds. Problem Statement. In this context, innovative financial technologies of modern financial policy of the new formation acquire special importance, which will play the role of trends in the coming decade 2025–2035. The purpose is to scientifically understand the possibility of integrating e-hryvnia, stablecoin and smart contract into the public finances of Ukraine in the conditions of war and post-war reconstruction as an element of the modern vision of the coming decade. Methods. The methods of economic assessments and generalization, synthesis and analysis, deduction and induction, the abstract-logical method of negation of the negations of financial decisions, theoretical generalization were used to determine the nature of innovative FinTech in public finance. Results. The potential of innovative FinTech in public finance, in particular e-hryvnia, stablecoins and smart contracts, as a modern financial instrument of innovative leadership, national stability in the conditions of war and post-war reconstruction of the state, was investigated. The feasibility of considering innovative FinTech not only as a crypto-financial asset of the corporate sector, but also as an element of a new financial architecture capable of increasing the transparency, efficiency and manageability of financial flows in the area of public-private partnership, in particular investment and donor resources, is substantiated. The institutional, legal and macroeconomic limitations of the introduction of e-hryvnia, stablecoins and smart contracts in Ukraine are identified, and conceptual scenarios of their application in the context of national stability, security, reconstruction and digitalization of public finances are formulated. Conclusions. The aggressor's military actions, the achievement of peace and the post-war reconstruction of Ukraine are characterized by extreme scale, multi-channel financial flows and high requirements for control over the use of resources. In such conditions, innovative FinTech can become a tool for accumulating domestic resources and international financial assistance, financing infrastructure projects, implementing regional and municipal development programs, and supporting public-private partnerships.</jats:p>