 Open Citations is a community-based infrastructure organization dedicated to the publication of open bibliographic and citation data. Open Citations meets the requirements of scholarly communities and facilitates free access to important information and research indicators. Open Citations has the potential to support change in research assessment and it aligns with open science principles, fair data principles, and the initiative for Open Citations guidelines for open citation data. But how does Open Citations work? Open Citations ingests, processes, and publishes citation metadata from various sources and makes them available in several collections. The Open Citations Indices which store and deliver citations links between scholarly entities and Open Citations meta which stores and delivers bibliographic metadata for all citing and cited entities involved in the Open Citations Indices. Open Citations is an infrastructure for research infrastructures, content and service providers. Open Citations provides open metadata with scope, depth, accuracy and provenance, supports libraries to monitor research, enables reproducibility in bibliometrics research, tracks the scholarly productivity and influence of academics, empowers the creation of new applications and visualizations, guarantees easy access to the citation data. Open Citations provides open bibliographic citations, interconnecting data and integrating functionalities with the open air graph and other open air services. Open Citations is registered in the EOSC marketplace and it is positioned within the open science ecosystem as a valuable innovative infrastructure with strong proof of integration and interoperable operations. Open Citations, together we can achieve more.