Digital technologies and economies can strengthen participative processes and data- and knowledge-based sustainable urban development. It can also accelerate social integration and the efforts of urban dwellers towards more resilient urban environments. Gap: Most of the tools that strengthen participatory processes were not cocreated with stakeholders. Research shows that codesigned platforms driven by new technological advances and the development of collaborative sharing economy concepts can increase climate change awareness. Still, the rise of participatory innovation technologies does not focus on enabling social engagement in climate change mitigation. Therefore, this paper addresses a research question: can a codesigned community currency stimulate bottom-up initiatives for climate change mitigation, and what is needed for such tools to succeed with the implementation of climate-responsive policies? The aim was to introduce an approach allowing us to codesign an application to encourage pro-environmental behaviors. Hence, the approach of this research was to define the concept of such a tool as a part of a cocreation process with stakeholders in a multidisciplinary and cross-sectoral environment. Method: It uses design thinking enriched with case studies evaluation, workshops, UX design, low fidelity, SUS, and testbeds. Findings and value: The authors introduce the Greencoin concept and argue that the codesigned digital currency operating based on an educational application has the potential to strengthen social engagement in climate change mitigation. Beneficiaries and practical implementation: Such a tool can increase climate awareness by supporting social integration and bottom-up initiatives for climate change mitigation. It can therefore be used by local communities to strengthen their climate-responsive efforts.

The irreversible transition towards urban living entails complex challenges and vulnerabilities for citizens, civic authorities, and the management of global commons. Many cities remain beset by political, infrastructural, social, or economic fragility, with crisis arguably becoming an increasingly present condition of urban life. While acknowledging the intense vulnerabilities that cities can face, this article contends that innovative, flexible, and often ground-breaking policies, practices, and activities designed to manage and overcome fragility can emerge in cities beset by crisis. We argue that a deeper understanding of such practices and the knowledge emerging from contexts of urban crisis may offer important insights to support urban resilience and sustainable development. We outline a simple conceptual representation of the interrelationships between urban crisis and knowledge production, situate this in the context of literature on resilience, sustainability, and crisis, and present illustrative examples of real-world practices. In discussing these perspectives, we reflect on how we may better value, use, and exchange knowledge and practice in order to address current and future urban challenges.