The United Nations (UN) Sustainable Development Goals (SDGs) are a series of global development targets that were adopted by all UN member states in 2015 to address the world's most pressing societal, environmental, and economic challenges by 2030 (UN 2015). They include 17 goals and 169 targets covering a wide range of topics from inclusive and equitable education to climate change. The achievement of the SDGs depends on our ability to accurately measure progress towards these topics using timely, relevant, and reliable data (Dang and Serajuddin 2020). To help in the development and implementation of such data and of monitoring mechanisms, a Global Indicator Framework was adopted by the UN General Assembly in 2017, which currently includes 231 unique indicators as a set of metrics to deliver information on the status and trends in each SDG target (UN 2017). However, the lack of resources and institutional capacity makes the monitoring of these indicators very challenging for the producers and users of official statistics, including National Statistical Offices (NSOs), line ministries, UN agencies and others that are responsible for compiling and disseminating official statistics (Fraisl et al. 2022).Citizen science, along with other new sources of data such as remote sensing and mobile phone records, offers a novel solution to complement and enhance official statistics, and to provide more detailed information that cannot be captured through traditional sources of data such as household surveys (Fritz et al. 2019;Dörler et al. 2021). Accordingly, Fraisl et al. (2020 found that citizen science data are contributing or could contribute to the monitoring of 33 percent of the SDG indicators. In addition to the SDGs, there are other frameworks such as the Paris Agreement (UNFCCC 2023), the Sendai Framework for Disaster Risk Reduction (UNDRR 2015), the New Urban Agenda (UN HABITAT 2016), and the post-2020 Global Biodiversity Framework (UN 2022a) that also require better monitoring and implementation, to which citizen science could contribute. For example, Danielsen et al ( 2014) have previously shown that 63 percent of the 186 indicators of 12 multilateral environmental agreements can be informed by citizen science data.Citizen science can also help to achieve transformative change, which can be defined as an extensive and foundational shift across social, environmental, economic, technological, and