The correct way to sign CiTIUS articles is:

Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTIUS)

Universidade de Santiago de Compostela

15782, Santiago de Compostela, SPAIN

In this link the regulation instruction regarding the standardization of institutional affiliation can be found. Also, the following image shows how this signature should appear on an article:

CiTIUS publications should include the following acknowledgement:

This work has received financial support from the Consellería de Educación, Universidade e Formación Profesional (accreditation 2019-2022 ED431G-2019/04) and the European Regional Development Fund (ERDF), which acknowledges the CiTIUS - Centro Singular de Investigación en Tecnoloxías Intelixentes da Universidade de Santiago de Compostela as a Research Center of the Galician University System.

In case the group has a competitive reference grant or similar, both can be included in the same thank you: :

This work has received financial support from the Consellería de Educación, Universidade e Formación Profesional (accreditation 2019-2022 ED431G-2019/04 and reference competitive group 2014-2017, GRC2014/030) and the European Regional Development Fund (ERDF), which acknowledges the CiTIUS - Centro Singular de Investigación en Tecnoloxías Intelixentes da Universidade de Santiago de Compostela as a Research Center of the Galician University System.