diff --git a/.github/workflows/announce-stable.yml b/.github/workflows/announce-stable.yml
new file mode 100644
index 0000000..d933ee5
--- /dev/null
+++ b/.github/workflows/announce-stable.yml
@@ -0,0 +1,40 @@
+name: Announce verified Stable release
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: "Published Stable version. Confirm its announcement was not already sent."
+        type: string
+        required: true
+
+permissions:
+  contents: read
+
+concurrency:
+  group: hqbase-staging-resources
+  queue: max
+  cancel-in-progress: false
+
+jobs:
+  announce:
+    if: github.ref_name == 'main'
+    runs-on: ubuntu-latest
+    environment: release
+    timeout-minutes: 10
+    env:
+      GH_TOKEN: ${{ github.token }}
+      HQBASE_RELEASE_VERSION: ${{ inputs.version }}
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
+        with:
+          node-version: 24
+      - name: Verify published Stable without changing it
+        run: node scripts/release/verify-stable.mjs
+      - name: Announce verified Stable release
+        env:
+          DISCORD_WEBHOOK_URL: ${{ secrets.DISCORD_RELEASE_WEBHOOK_URL }}
+        run: |
+          gh release view "v${HQBASE_RELEASE_VERSION}" --json body --jq .body > "$RUNNER_TEMP/release-notes.md"
+          node scripts/release/notify-discord.mjs "$RUNNER_TEMP/release-notes.md"
diff --git a/scripts/release/verify-stable.mjs b/scripts/release/verify-stable.mjs
new file mode 100644
index 0000000..d4a726a
--- /dev/null
+++ b/scripts/release/verify-stable.mjs
@@ -0,0 +1,53 @@
+import { execFileSync } from "node:child_process";
+import { readFileSync } from "node:fs";
+import { resolve } from "node:path";
+import { pathToFileURL } from "node:url";
+import { verifiedCandidate } from "./channels.mjs";
+import { loadVerifiedRelease } from "./manifest.mjs";
+import { fetchPublicAsset } from "./public-assets.mjs";
+import { assertStableReleaseVersion } from "./version.mjs";
+
+export function assertPublishedStable({ version, latest, manifest, candidate, report, deploy }) {
+  if (latest.tag_name !== `v${version}` || latest.draft !== false || latest.prerelease !== false) {
+    throw new Error("Only the published Latest Stable release can be announced.");
+  }
+  if (
+    manifest.version !== version ||
+    JSON.stringify(manifest) !== JSON.stringify(candidate) ||
+    report.version !== version ||
+    report.artifactSha256 !== manifest.artifact.sha256 ||
+    report.sourceCommit !== manifest.sourceCommit ||
+    deploy !== manifest.sourceCommit
+  ) {
+    throw new Error("Published Stable does not match its tested archive and deploy commit.");
+  }
+}
+
+async function main() {
+  const version = assertStableReleaseVersion(process.env.HQBASE_RELEASE_VERSION);
+  if (process.env.GITHUB_REPOSITORY !== "HQBase/hqbase" || process.env.GITHUB_REF_NAME !== "main") {
+    throw new Error("Stable announcement recovery must run from canonical main.");
+  }
+  const api = (path) =>
+    JSON.parse(execFileSync("gh", ["api", `repos/HQBase/hqbase/${path}`], { encoding: "utf8" }));
+  const { manifest: candidate } = await verifiedCandidate(version);
+  const { manifest } = await loadVerifiedRelease({
+    expectedVersion: version,
+    fetcher: fetchPublicAsset
+  });
+  const report = JSON.parse(readFileSync(resolve("release/evidence", `${version}.json`), "utf8"));
+  assertPublishedStable({
+    version,
+    latest: api("releases/latest"),
+    manifest,
+    candidate,
+    report,
+    deploy: api("git/ref/heads/deploy").object.sha
+  });
+  console.log(
+    `Verified published Stable ${version} and its tested archive ${manifest.artifact.sha256}.`
+  );
+}
+
+if (process.argv[1] && import.meta.url === pathToFileURL(resolve(process.argv[1])).href)
+  await main();
diff --git a/test/unit/scripts/verify-stable.test.mjs b/test/unit/scripts/verify-stable.test.mjs
new file mode 100644
index 0000000..56733a2
--- /dev/null
+++ b/test/unit/scripts/verify-stable.test.mjs
@@ -0,0 +1,42 @@
+import { describe, expect, it } from "vitest";
+import { assertPublishedStable } from "../../../scripts/release/verify-stable.mjs";
+
+const manifest = {
+  version: "1.4.0",
+  sourceCommit: "a".repeat(40),
+  artifact: { sha256: "b".repeat(64) }
+};
+const input = {
+  version: "1.4.0",
+  latest: { tag_name: "v1.4.0", draft: false, prerelease: false },
+  manifest,
+  candidate: manifest,
+  report: {
+    version: "1.4.0",
+    sourceCommit: manifest.sourceCommit,
+    artifactSha256: manifest.artifact.sha256
+  },
+  deploy: manifest.sourceCommit
+};
+
+describe("Stable announcement recovery", () => {
+  it("accepts the exact reviewed and published Stable", () => {
+    expect(() => assertPublishedStable(input)).not.toThrow();
+  });
+  it.each([
+    { ...input.latest, draft: true },
+    { ...input.latest, prerelease: true },
+    { ...input.latest, tag_name: "v1.4.1" }
+  ])("rejects unpublished candidates and a changed Latest", (latest) => {
+    expect(() => assertPublishedStable({ ...input, latest })).toThrow("Latest Stable");
+  });
+  it.each([
+    { deploy: "c".repeat(40) },
+    { candidate: { ...manifest, sourceCommit: "c".repeat(40) } },
+    { report: { ...input.report, artifactSha256: "c".repeat(64) } },
+    { report: { ...input.report, sourceCommit: "c".repeat(40) } },
+    { report: { ...input.report, version: "1.4.1" } }
+  ])("rejects archive, evidence, and deploy mismatches", (change) => {
+    expect(() => assertPublishedStable({ ...input, ...change })).toThrow("tested archive");
+  });
+});