The services above are the complete, current list of what JHHR is confirmed to use for identification, metadata registration and discovery. A database, index or repository that is not named on this page is simply not part of the journal’s current record — its absence should not be read as an application in progress, a pending decision, or an oversight.
If a specific indexing status matters for your own submission or research-evaluation decision, the most reliable source is the database in question, using the verify links above — not a summary on any publisher’s website. Coverage level matters too: a service marked article-level (Google Scholar, Semantic Scholar) reflects that individual articles are discoverable there, not that the journal itself has been formally accepted into a curated index.