diff --git a/src/lib/components/SiteHead.svelte b/src/lib/components/SiteHead.svelte
index 97b3399..fd8682f 100644
--- a/src/lib/components/SiteHead.svelte
+++ b/src/lib/components/SiteHead.svelte
@@ -1,6 +1,7 @@
 <script lang="ts">
     import { page } from '$app/state';
     import { SITE } from '$lib/config';
+    import { PUBLIC_ATPROTO_DID, PUBLIC_LEAFLET_BLOG_PUBLICATION } from '$env/static/public';
 
     let {
         title,
@@ -12,6 +13,7 @@
         publishedTime,
         tags,
         author,
+        documentRkey,
     }: {
         title?: string;
         description?: string;
@@ -32,12 +34,24 @@
         tags?: string[];
         /** Author URL, used for article:author. */
         author?: string;
+        /** The rkey of the site.standard.document record for this page. */
+        documentRkey?: string;
     } = $props();
 
     const fullTitle = $derived(title ? `${title} — ${SITE.title}` : SITE.ogTitle);
     const fullDescription = $derived(description ?? SITE.description);
     const canonicalUrl = $derived(new URL(page.url.pathname, page.url.origin).href);
 
+    // Standard.site discovery and verification
+    // Publication hint is for the site-wide discovery, typically root and blog index.
+    const isRoot = $derived(!title);
+    const publicationAtUri = $derived((isRoot || ogType === 'BLOG') && PUBLIC_ATPROTO_DID && PUBLIC_LEAFLET_BLOG_PUBLICATION 
+        ? `at://${PUBLIC_ATPROTO_DID}/site.standard.publication/${PUBLIC_LEAFLET_BLOG_PUBLICATION}` 
+        : undefined);
+    const documentAtUri = $derived(documentRkey && PUBLIC_ATPROTO_DID 
+        ? `at://${PUBLIC_ATPROTO_DID}/site.standard.document/${documentRkey}` 
+        : undefined);
+
     // Resolve the subtitle for the OG image: prefer explicit ogSubtitle, then
     // fall back to description — clamped to 150 chars (~3 lines at 40px).
     const ogImageSubtitle = $derived.by(() => {
@@ -63,6 +77,14 @@
     <meta name="description" content={fullDescription} />
     <link rel="canonical" href={canonicalUrl} />
 
+    <!-- Standard.site -->
+    {#if publicationAtUri}
+        <link rel="site.standard.publication" href={publicationAtUri} />
+    {/if}
+    {#if documentAtUri}
+        <link rel="site.standard.document" href={documentAtUri} />
+    {/if}
+
     <!-- Open Graph / Facebook / AI Search -->
     <meta property="og:type" content={type} />
     <meta property="og:title" content={fullTitle} />
diff --git a/src/routes/.well-known/site.standard.publication/+server.ts b/src/routes/.well-known/site.standard.publication/+server.ts
new file mode 100644
index 0000000..ae821aa
--- /dev/null
+++ b/src/routes/.well-known/site.standard.publication/+server.ts
@@ -0,0 +1,21 @@
+import type { RequestHandler } from "./$types";
+import {
+  PUBLIC_ATPROTO_DID,
+  PUBLIC_LEAFLET_BLOG_PUBLICATION,
+} from "$env/static/public";
+
+export const prerender = false;
+
+export const GET: RequestHandler = ({ setHeaders }) => {
+  if (!PUBLIC_ATPROTO_DID || !PUBLIC_LEAFLET_BLOG_PUBLICATION) {
+    return new Response("Not Found", { status: 404 });
+  }
+
+  setHeaders({
+    "Content-Type": "text/plain",
+    "Cache-Control": "public, max-age=3600",
+  });
+
+  const atUri = `at://${PUBLIC_ATPROTO_DID}/site.standard.publication/${PUBLIC_LEAFLET_BLOG_PUBLICATION}`;
+  return new Response(atUri);
+};
diff --git a/src/routes/blog/[year]/[month]/[day]/[slug]/+page.svelte b/src/routes/blog/[year]/[month]/[day]/[slug]/+page.svelte
index 0678320..6f7cf2f 100644
--- a/src/routes/blog/[year]/[month]/[day]/[slug]/+page.svelte
+++ b/src/routes/blog/[year]/[month]/[day]/[slug]/+page.svelte
@@ -24,6 +24,7 @@
     publishedTime={data.post.createdAt}
     tags={data.post.tags}
     author="https://ewancroft.uk/about"
+    documentRkey={data.post.rkey}
 />
 
 <main class="shell-prose">