diff --git a/scripts/check-public-live-deploy.mjs b/scripts/check-public-live-deploy.mjs
index 7cbfe538..60486c2b 100644
--- a/scripts/check-public-live-deploy.mjs
+++ b/scripts/check-public-live-deploy.mjs
@@ -5,12 +5,15 @@
 // Used by the release lane after a Pages deployment. Runs against the live
 // site only; set SKIP_LIVE_CHECKS=1 to skip (exit 0) on offline machines.
 //
-// The four live proofs (all neutral, all merged on main before this lane):
+// The live proofs (all neutral, all merged on main before this lane):
 //   1. /promptly/support/ renders H2 after H1        (PRs #18/#20)
 //   2. /contact/ carries application/ld+json         (PR #19)
 //   3. unknown URLs get a real 404, not the homepage (PR #34)
 //   4. homepage stays portfolio-only: brand-disambiguation copy (#29) live,
 //      and no managed-service buyer-path content (#10/#11, snoozed).
+//   5. every public page carries exactly one application/ld+json block
+//      (trust/support structured data, PR #26 - the 07acd07 bundle shipped
+//      JSON-LD on only 4 of 12 pages).
 import { join } from "node:path"
 import { fileURLToPath } from "node:url"
 import { dirname } from "node:path"
@@ -24,6 +27,22 @@ const BUYER_PATH_MARKERS = [
   "data-measure-source",
 ]
 
+// Every public page on the live site must carry structured data (PR #26).
+const PUBLIC_PATHS = [
+  "/",
+  "/contact/",
+  "/support/",
+  "/privacy/",
+  "/privacy-choices/",
+  "/terms/",
+  "/promptly/",
+  "/promptly/support/",
+  "/promptly/privacy/",
+  "/drishti/",
+  "/drishti/support/",
+  "/drishti/privacy/",
+]
+
 let failures = 0
 let checks = 0
 const ok = (cond, msg) => {
@@ -90,6 +109,13 @@ try {
       ok(!body.includes(marker), `homepage has no ${marker}`)
     }
   }
+  console.log("E. every public page carries structured data (PR #26)")
+  for (const path of PUBLIC_PATHS) {
+    const { status, body } = await get(path)
+    ok(status === 200, `${path} returns 200 (got ${status})`)
+    const blocks = (body.match(/<script\s+type="application\/ld\+json"[^>]*>/gi) || []).length
+    ok(blocks === 1, `${path} carries exactly one application/ld+json block (got ${blocks})`)
+  }
 } catch (error) {
   failures++
   console.error(`  FAIL live request error: ${error.message}`)
diff --git a/scripts/prepare-public-deploy-bundle.mjs b/scripts/prepare-public-deploy-bundle.mjs
index dc170b04..93507e37 100644
--- a/scripts/prepare-public-deploy-bundle.mjs
+++ b/scripts/prepare-public-deploy-bundle.mjs
@@ -15,7 +15,8 @@
 //   - post-filter: the bundle must contain none of the forbidden markers and
 //     must still carry the neutral merged fixes used as deploy proof
 //     (H2-after-H1 on /promptly/support/ from #18/#20, JSON-LD on /contact/
-//     from #19, homepage brand disambiguation from #29).
+//     from #19, homepage brand disambiguation from #29, and the PR #26
+//     site-wide invariant that every public page keeps its JSON-LD block).
 //
 // CLI: node scripts/prepare-public-deploy-bundle.mjs --source public --output <dir>
 // Defaults: --source ./public, --output to a fresh temp directory (printed).
@@ -80,6 +81,59 @@ export const NEUTRAL_PROOFS = [
     file: "index.html",
     test: (html) => html.includes("not affiliated"),
   },
+  // Site-wide structured data invariant (PR #26): the 07acd07 bundle shipped
+  // JSON-LD on only 4 of 12 pages; the release lane must never do that again.
+  // Each remaining public page keeps exactly one application/ld+json block.
+  {
+    label: "support page JSON-LD (07acd07 baseline)",
+    file: "support/index.html",
+    test: (html) => html.includes("application/ld+json"),
+  },
+  {
+    label: "privacy hub JSON-LD (PR #26)",
+    file: "privacy/index.html",
+    test: (html) => html.includes("application/ld+json"),
+  },
+  {
+    label: "terms page JSON-LD (PR #26)",
+    file: "terms/index.html",
+    test: (html) => html.includes("application/ld+json"),
+  },
+  {
+    label: "privacy choices JSON-LD (PR #26)",
+    file: "privacy-choices/index.html",
+    test: (html) => html.includes("application/ld+json"),
+  },
+  {
+    label: "Promptly home JSON-LD (07acd07 baseline)",
+    file: "promptly/index.html",
+    test: (html) => html.includes("application/ld+json"),
+  },
+  {
+    label: "Promptly support JSON-LD (PR #26)",
+    file: "promptly/support/index.html",
+    test: (html) => html.includes("application/ld+json"),
+  },
+  {
+    label: "Promptly privacy JSON-LD (PRs #19/#26)",
+    file: "promptly/privacy/index.html",
+    test: (html) => html.includes("application/ld+json"),
+  },
+  {
+    label: "Drishti home JSON-LD (07acd07 baseline)",
+    file: "drishti/index.html",
+    test: (html) => html.includes("application/ld+json"),
+  },
+  {
+    label: "Drishti support JSON-LD (PR #26)",
+    file: "drishti/support/index.html",
+    test: (html) => html.includes("application/ld+json"),
+  },
+  {
+    label: "Drishti privacy JSON-LD (PR #26)",
+    file: "drishti/privacy/index.html",
+    test: (html) => html.includes("application/ld+json"),
+  },
 ]
 
 // Files that must exist in every bundle.