HDL Group is a solo-operated publishing house. This page describes, plainly, how the site's content is produced and maintained — the aim is honest disclosure rather than an inflated claim of institutional process.
Book descriptions, article copy, and site content are written and maintained by the site owner. Factual claims about external topics (e.g. Bitcoin mechanics, general wellness science) are the owner's synthesis of publicly available information, not original research or clinical findings.
Pages carry lastmod dates in the sitemap reflecting when they were last substantively edited. See changelog.html for a running log of site changes.
This is not a newsroom, an academic publication, or a source of medical, financial, or legal advice. Titles in the wellness and finance categories are educational/informational, not professional guidance — see each book's own disclaimers.
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