The aim of the World Heat Flow Database Project is to develop a new research data infrastructure for the IHFC Global Heat Flow Database (IHFC) offering a one-stop shop for comprehensive information on heat-flow related data, publications, projects, and researchers. This new user-oriented web service will provide to the geoscientific community quality-proofed, up-to-date, well-documented, extended, enriched, and restructured heat-flow data. The project supports the Global Heat Flow Data Assessment Project. The new database will reflect the criteria of FAIR and OPEN data policy and will support the interoperability with other geoscientific data services (e.g., EPOS). Core elements are the provision of globally used persistent identifiers: (i) DOI for heat-flow data newly submitted to the database, (ii) ORCID IDs to uniquely identify authors, and (iii) International Generic Sample Numbers (IGSN) for connecting data and literature with physical samples on which data were measured.