The Barcelona Declaration on Open Research Information formulates a decisive institutional response to the growing dependence of research systems on proprietary, opaque and commercially governed metadata infrastructures. Its central proposition is that the information used to evaluate researchers, allocate resources, set strategic priorities and trace scientific influence must itself be open, reusable, interoperable and accountable. The Declaration identifies a profound contradiction in contemporary scholarship: institutions often assess open science through closed databases, thereby grounding consequential decisions in evidence that cannot be independently audited, corrected or reproduced. Its four commitments establish a practical architecture of reform: making openness the default for research information used and produced; working only with systems that enable open metadata export through standard protocols and persistent identifiers; sustaining open scholarly infrastructures through community governance and equitable financial support; and coordinating collective action to accelerate transition. The case synthesis is especially clear in the contrast between closed systems such as Web of Science and Scopus, described in Annex A as examples of restricted infrastructures, and open alternatives including Crossref, DataCite, ORCID, OpenAlex, OpenCitations, OpenAIRE, PubMed, Europe PMC, La Referencia, SciELO and Redalyc. Through this contrast, the Declaration reframes metadata as a matter of academic sovereignty rather than administrative convenience. Its conclusion is unequivocal: responsible assessment, multilingual visibility and equitable science policy require open research information as the normative substrate of scholarly governance.