security: announce a fresh EIP-6963 provider UUID per page load (closes #398)

The provider UUID was generated once, stored in extension storage, and
announced verbatim to every page on every load and across restarts, so any
site — connected or not — could read a stable cross-site, cross-session
identifier for the install: a supercookie contradicting the "no tracking"
promise. EIP-6963 wants a fresh UUIDv4 per announcement instead.

inpage.js now announces a per-load crypto.randomUUID() and persists nothing;
the eip6963Uuid storage key and the AUTISTMASK_PROVIDER_UUID content-script
message are removed. That key was a standalone top-level storage entry, never
part of the versioned autistmask profile, so stateSchema.js and the
persisted-field harness are untouched and no existing profile is affected.

A jest test asserts two loads announce different UUIDv4s and that one load
reuses a single UUID across re-announcements.

Model: opus-4-8

README.md

@@ -64,7 +64,9 @@ release/SHA256SUMS
 ```
 
 Nothing is published by this. Tagging, CRX packing and any upload are
-outward-facing acts and are the owner's alone.
+outward-facing acts and are the owner's alone. The full procedure that turns a
+green `main` into a tagged, packaged release — the order of steps, who performs
+each, and how to check it worked — is in [docs/RELEASE.md](docs/RELEASE.md).
 
 The archives are deterministic — entries sorted, timestamps fixed, compression
 level fixed — so two builds of one commit produce byte-identical files and the

TODO.md

@@ -90,6 +90,16 @@ but the review is broader than any of them.
   approve, reject and disconnect paths against a transaction approval
   broadcasting behind them: each is declined and the dApp still receives its
   broadcast result.
+- 2026-09-21: `docs/RELEASE.md`, linked from `README.md`, states the release
+  procedure as a numbered list a newcomer can follow: confirm `main` is green in
+  CI, confirm the one version in the three files matches the intended tag,
+  `make package` from a clean checkout, verify `SHA256SUMS`, tag `vX.Y.Z`, then
+  distribute per browser. Each step names who performs it (owner-only steps
+  marked) and the check that it worked. The distribution step is written as
+  pending the owner's choice on
+  [#386](https://git.eeqj.de/sneak/AutistMask/issues/386), with the Firefox and
+  Chrome options named but none settled. Docs only
+  ([#387](https://git.eeqj.de/sneak/AutistMask/issues/387)).
 
 - 2026-09-21: Adding a second wallet no longer accepts a different password with
   nothing saying it is a separate one
@@ -113,6 +123,37 @@ but the review is broader than any of them.
   `Unknown token`, and a non-bundled ERC-20 is no longer carried onto the wait
   screen as `ETH`. A tracked or explorer-reported name stays subject to the
   spoof rule, so resolving a symbol is not a new way to wear a known ticker.
+- 2026-09-21: The debug/testnet banner no longer shows the internal view id to
+  the user in a release build
+  ([#375](https://git.eeqj.de/sneak/AutistMask/issues/375)). The banner appended
+  the active view's id (e.g. `[TESTNET] (approve-tx)`), which is developer
+  vocabulary sitting directly above the approval screen's carefully worded
+  authorization text. The suffix is now gated on the compile-time `DEBUG`
+  constant rather than `isDebug()`, so it survives only in a debug build; a
+  testnet or the runtime debug toggle still raises the banner but without the
+  view id.
+
+- 2026-09-21: The Confirm Delete button on the delete-wallet screen no longer
+  stays dead after a successful delete
+  ([#335](https://git.eeqj.de/sneak/AutistMask/issues/335)). The password route
+  disabled the button before the decrypt and never re-enabled it, so a second
+  delete in the same popup session needed a reopen; the lost-password route
+  re-enabled its own button in its leave hook, so the two screens behaved
+  differently. Both now reset through the shared `finishDelete()`, the one path
+  both routes take, so they behave the same and the button is live for the next
+  delete.
+
+- 2026-09-21: The EIP-6963 provider UUID is generated fresh on each page load
+  and never persisted ([#398](https://git.eeqj.de/sneak/AutistMask/issues/398)).
+  It was created once and stored, then announced verbatim to every page on every
+  load and across restarts, so any site — connected or not — could read it as a
+  stable cross-site, cross-session identifier for the install, contradicting the
+  "no tracking" promise. inpage.js now announces a per-load
+  `crypto.randomUUID()` and the `eip6963Uuid` storage key and the
+  `AUTISTMASK_PROVIDER_UUID` content-script message are gone. That key was a
+  standalone storage entry, never part of the versioned `autistmask` profile, so
+  the state schema is untouched and no existing profile is affected.
+
 - 2026-08-30: An address no longer wraps, or is shortened to fit, in any of the
   common views ([#380](https://git.eeqj.de/sneak/AutistMask/issues/380)). The
   wallet list was the reported case: the address shared one row with the

docs/RELEASE.md

@@ -0,0 +1,87 @@
+# Releasing AutistMask
+
+This is the procedure that turns a green `main` into a tagged, packaged release.
+It gathers into one place what is otherwise spread across the `Makefile` and
+three `README.md` sections, so the person cutting a release does not have to
+reconstruct the order from them.
+
+There is one version, declared in three files (`package.json`,
+`manifest/chrome.json`, `manifest/firefox.json`), and `make package` builds and
+packages but publishes nothing. `make build` and `make package` can be run by
+anyone; tagging, signing, packing a CRX and any upload need credentials only the
+owner ([@sneak](https://sneak.berlin)) holds and are marked **owner-only**
+below. Releases are tagged from `main` (see the Workflow section of `TODO.md`),
+so the "release commit" throughout is the `main` commit the milestone PR merged.
+
+## Procedure
+
+1. **Confirm `main` is green in CI.** The `check` workflow
+   (`.gitea/workflows/check.yml`) runs `script/cibuild`, i.e. `docker build .`,
+   and the `Dockerfile` runs `make check` as a build step, so a green `check`
+   run is a green `make check`. Find the run for the exact release commit on the
+   tracker's Actions view. _Check:_ that commit's `check` run succeeded; running
+   `make check` on a clean checkout of the commit reproduces it and exits 0.
+
+2. **Confirm the version matches the intended tag.** `package.json`,
+   `manifest/chrome.json` and `manifest/firefox.json` must all declare the same
+   `X.Y.Z`. `make build` fails when they disagree, but nothing checks that they
+   equal the tag you mean to create — that is this manual step. _Check:_ all
+   three files read the same `X.Y.Z`, and it is the version you intend to tag
+   `vX.Y.Z`.
+
+3. **Build and package from a clean checkout of that commit.** From a fresh
+   clone, or a working tree with no local modifications (`git status` clean),
+   checked out at the release commit: run `make setup`, then `make package`.
+   `make package` runs `make build` first, so the archives can only be made from
+   a `dist/` verified against that build's own receipt as a release (not debug)
+   build. It writes three files into `release/`:
+   `autistmask-chrome-<version>.zip`, `autistmask-firefox-<version>.xpi`, and
+   `SHA256SUMS`. _Check:_ those three files exist and `<version>` in the archive
+   names is the version confirmed in step 2. The Firefox `.xpi` is **unsigned**
+   (see step 6 and "Installing on Firefox" in `README.md`).
+
+4. **Verify `SHA256SUMS`.** The archives are deterministic — sorted entries,
+   fixed timestamps, fixed compression — so a second `make package` from another
+   clean checkout of the same commit produces byte-identical files. Verify the
+   recorded digests against the files with `sha256sum -c SHA256SUMS`, run from
+   `release/`. To confirm reproducibility, run `make package` again on a
+   separate clean checkout and compare the digests. _Check:_ `sha256sum -c`
+   reports `OK` for every file, and an independent build's digests match.
+
+5. **Tag the release commit.** _(owner-only)_ Create an annotated tag `vX.Y.Z`
+   on the release commit and push it: `git tag -a vX.Y.Z` (with a message), then
+   `git push origin vX.Y.Z`. _Check:_ `git tag` lists `vX.Y.Z`, and
+   `git rev-parse vX.Y.Z^{commit}` resolves to the release commit.
+
+6. **Distribute per browser.** _(owner-only; pending the owner's choice on
+   https://git.eeqj.de/sneak/AutistMask/issues/386)_ How 1.0.0 is distributed on
+   each browser is not yet decided; it is the open question on that issue, and
+   the concrete steps cannot be written until the owner records a choice there.
+   These steps need credentials only the owner holds. The options under
+   consideration are:
+    - **Firefox** — the packaged `.xpi` is unsigned, and release Firefox and ESR
+      refuse an unsigned add-on:
+        - (a) AMO self-distribution signing (unlisted): submit the `.xpi` to AMO
+          with the owner's credentials; AMO returns a signed `.xpi` installable
+          on every Firefox, with nothing listed publicly.
+        - (b) AMO listed: as (a), plus a public AMO listing and review.
+        - (c) Ship the unsigned `.xpi` and state that Firefox support means
+          Developer Edition, Nightly, or an Unbranded build with
+          `xpinstall.signatures.required` set to `false`.
+    - **Chrome** — the repo packs no CRX and publishes nothing; the extension id
+      is fixed by the `key` in `manifest/chrome.json`:
+        - (a) Chrome Web Store (unlisted): upload the `.zip` with the owner's
+          developer account; the store delivers installs and updates.
+        - (b) Self-hosted CRX signed with the private key the owner holds
+          (`chrome --pack-extension=dist/chrome --pack-extension-key=<path to the .pem>`),
+          installable only via enterprise policy on Windows and macOS, so
+          realistically Linux-only.
+        - (c) "Load unpacked" from `dist/chrome/` only, as today.
+
+    Once the owner decides, the chosen steps — including which credentials they
+    need and who holds them — are written into this section and `README.md`'s
+    installation sections are updated to match, which is part of the definition
+    of done of https://git.eeqj.de/sneak/AutistMask/issues/386. _Check:_ for a
+    store or AMO route, the artifact installs from the store or AMO on a clean
+    browser profile; for the CRX or unpacked route, the documented load succeeds
+    and Chrome reports the extension id `gipbhkogfopeahplcjhipkgpcimdpkip`.

src/content/index.js

@@ -5,8 +5,6 @@ const {
     hasBrowserNamespace,
     runtimeApi,
     sendMessage,
-    storageGet,
-    storageSet,
 } = require("../shared/browserApi");
 
 // In Chrome (MV3), inpage.js runs as a MAIN-world content script declared
@@ -21,30 +19,6 @@ if (hasBrowserNamespace()) {
     (document.head || document.documentElement).appendChild(script);
 }
 
-// Send the persisted EIP-6963 provider UUID to the inpage script.
-// Generated once at install time and stored in extension storage.
-(async function sendProviderUuid() {
-    let uuid = null;
-    try {
-        const items = await storageGet("eip6963Uuid");
-        uuid = items?.eip6963Uuid;
-        if (!uuid) {
-            uuid = crypto.randomUUID();
-            await storageSet({ eip6963Uuid: uuid });
-        }
-    } catch {
-        // Storage was unavailable or refused the write. The announcement
-        // still has to go out — a provider that never announces is invisible
-        // to every EIP-6963 dApp — so it goes under a fresh uuid that this
-        // page load will not outlive.
-        if (!uuid) uuid = crypto.randomUUID();
-    }
-    window.postMessage(
-        { type: "AUTISTMASK_PROVIDER_UUID", uuid },
-        location.origin,
-    );
-})();
-
 // Relay requests from the page to the background script
 window.addEventListener("message", (event) => {
     if (event.source !== window) return;

src/content/inpage.js

@@ -204,7 +204,14 @@
                 "</svg>",
         );
 
-    let providerUuid = crypto.randomUUID(); // fallback until real UUID arrives
+    // EIP-6963 wants a fresh UUIDv4 per page load — it identifies one
+    // announcement, so a provider can be told apart from another instance of
+    // itself in the same page. It is generated here and never stored:
+    // announcing one persisted value to every site, on every load and across
+    // restarts, turned it into a stable cross-site, cross-session tracking
+    // identifier any page could read
+    // (https://git.eeqj.de/sneak/AutistMask/issues/398).
+    const providerUuid = crypto.randomUUID();
 
     function buildProviderInfo() {
         return {
@@ -226,16 +233,6 @@
         );
     }
 
-    // Listen for the persisted UUID from the content script
-    function onProviderUuid(event) {
-        if (event.source !== window) return;
-        if (event.data?.type !== "AUTISTMASK_PROVIDER_UUID") return;
-        window.removeEventListener("message", onProviderUuid);
-        providerUuid = event.data.uuid;
-        announceProvider();
-    }
-    window.addEventListener("message", onProviderUuid);
-
     window.addEventListener("eip6963:requestProvider", announceProvider);
     announceProvider();
 

src/popup/views/deleteWallet.js

@@ -51,16 +51,12 @@ function clear() {
 // The lost-password screen holds no secret — a wallet name is not one —
 // but it is wiped on leave for the neighbouring reason: a typed
 // confirmation left standing in a hidden view is one click away from
-// destroying a wallet the user has since navigated off. The button is
-// re-enabled here too, so a screen left mid-delete is usable on re-entry.
+// destroying a wallet the user has since navigated off.
 function clearLostPassword() {
     lostPasswordIndex = null;
     $("delete-wallet-lost-name-input").value = "";
     $("delete-wallet-lost-flash").textContent = "";
     $("delete-wallet-lost-flash").style.visibility = "hidden";
-    const btn = $("btn-delete-wallet-lost-confirm");
-    btn.disabled = false;
-    btn.classList.remove("text-muted");
 }
 
 function show(walletIdx) {
@@ -98,6 +94,17 @@ function showLostPassword() {
 // cleanup and the accountsChanged broadcast cannot drift apart between
 // them.
 async function finishDelete(walletIdx) {
+    // Each route's confirm button was disabled by its own click handler
+    // before the delete ran. Re-enable both here, on the one path they
+    // share, so the two routes reset the same way and a second delete in
+    // the same popup session finds a live button instead of a dead one.
+    const passwordBtn = $("btn-delete-wallet-confirm");
+    passwordBtn.disabled = false;
+    passwordBtn.classList.remove("text-muted");
+    const lostPasswordBtn = $("btn-delete-wallet-lost-confirm");
+    lostPasswordBtn.disabled = false;
+    lostPasswordBtn.classList.remove("text-muted");
+
     const { activeAddressChanged } = removeWalletFromState(state, walletIdx);
 
     deleteWalletIndex = null;
@@ -187,8 +194,8 @@ function init(_ctx) {
         btn.disabled = true;
         btn.classList.add("text-muted");
 
-        // finishDelete() navigates, and the leave hook re-enables the
-        // button and wipes the typed name on the way out.
+        // finishDelete() re-enables the button; navigating away then runs
+        // the leave hook that wipes the typed name.
         await finishDelete(lostPasswordIndex);
     });
 

src/popup/views/helpers.js

@@ -12,6 +12,7 @@
 // escapeHtml lives in src/shared/html.js, where the escape and the
 // reasoning behind it are; it is re-exported below so views keep importing
 // it from here.
+const { DEBUG } = require("../../shared/constants");
 const { escapeHtml } = require("../../shared/html");
 const { isDebug } = require("../../shared/log");
 const { formatUsd, getPrice } = require("../../shared/prices");
@@ -119,7 +120,11 @@ function updateDebugBanner(viewName) {
                 "background:#c00;color:#fff;text-align:center;font-size:10px;padding:1px 0;font-family:monospace;position:sticky;top:0;z-index:9999;";
             document.body.prepend(banner);
         }
-        const suffix = viewName ? " (" + viewName + ")" : "";
+        // The view id is internal vocabulary; it helps while developing but
+        // means nothing to a user. Only a debug build appends it, gated on the
+        // compile-time DEBUG constant so a release build never shows it — not
+        // isDebug(), which is also true for a testnet or the runtime toggle.
+        const suffix = DEBUG && viewName ? " (" + viewName + ")" : "";
         if (debug && net.isTestnet) {
             banner.textContent = "DEBUG / INSECURE [TESTNET]" + suffix;
         } else if (net.isTestnet) {

tests/debugBanner.test.js

@@ -0,0 +1,59 @@
+// Tests for the debug/testnet banner (issue #375).
+//
+// On a testnet the banner is raised even in a release build, but it must not
+// append the active view's internal id: the user should see "[TESTNET]", never
+// "[TESTNET] (approve-tx)". The suffix is gated on the compile-time DEBUG
+// constant, which is false in a plain test load, so this drives exactly the
+// text a shipped build renders. Revert the gate to the old unconditional
+// suffix and this fails.
+//
+// The banner is created on demand by updateDebugBanner(); the document stub
+// records what it prepends so the assertion can read the resulting text.
+
+function makeBanner() {
+    return {
+        id: "",
+        textContent: "",
+        style: { cssText: "" },
+        remove() {},
+    };
+}
+
+function makeDocument() {
+    let banner = null;
+    return {
+        getElementById(id) {
+            return id === "debug-banner" ? banner : null;
+        },
+        createElement: () => makeBanner(),
+        body: {
+            prepend(node) {
+                banner = node;
+            },
+        },
+    };
+}
+
+function load() {
+    jest.resetModules();
+    globalThis.chrome = {
+        storage: { local: { get: async () => ({}), set: async () => {} } },
+    };
+    globalThis.document = makeDocument();
+    const helpers = require("../src/popup/views/helpers");
+    const { state } = require("../src/shared/state");
+    return { helpers, state };
+}
+
+describe("the release banner on a testnet", () => {
+    test("carries no internal view id", () => {
+        const { helpers, state } = load();
+        state.networkId = "sepolia";
+
+        helpers.updateDebugBanner("approve-tx");
+
+        expect(
+            globalThis.document.getElementById("debug-banner").textContent,
+        ).toBe("[TESTNET]");
+    });
+});

tests/deleteWalletLostPassword.test.js

@@ -172,6 +172,15 @@ async function openLostPassword(deleteWallet, walletIdx) {
     await click("btn-delete-wallet-lost-password");
 }
 
+// Delete a wallet through the password route: open its confirm screen,
+// enter the password, and confirm. The vault is mocked, so the password
+// text itself is irrelevant — decryptWithPassword decides pass or fail.
+async function deleteWithPassword(deleteWallet, walletIdx) {
+    deleteWallet.show(walletIdx);
+    node("delete-wallet-password").value = "any password";
+    await click("btn-delete-wallet-confirm");
+}
+
 // ------------------------------------------------------------ tests
 
 // The stub is what every persistence assertion below rests on, so its one
@@ -456,15 +465,21 @@ describe("what the screen leaves behind", () => {
         );
     });
 
-    // Left mid-delete, the screen has to come back usable.
-    test("the confirm button is re-enabled on the way out", async () => {
-        const { helpers, deleteWallet } = load();
+    // Both routes now re-enable through finishDelete(), not their leave
+    // hooks, so the button comes back live once a delete completes.
+    test("the confirm button is re-enabled after a delete", async () => {
+        const { deleteWallet } = load();
         await openLostPassword(deleteWallet, 1);
 
-        node("btn-delete-wallet-lost-confirm").disabled = true;
-        helpers.showView("settings");
+        node("delete-wallet-lost-name-input").value = "Wallet 2";
+        await click("btn-delete-wallet-lost-confirm");
 
         expect(node("btn-delete-wallet-lost-confirm").disabled).toBe(false);
+        expect(
+            node("btn-delete-wallet-lost-confirm").classList.contains(
+                "text-muted",
+            ),
+        ).toBe(false);
     });
 
     // A wallet name is not a secret, so the screen is excluded for the
@@ -475,3 +490,48 @@ describe("what the screen leaves behind", () => {
         expect(RESTORABLE_VIEWS.has("delete-wallet-confirm")).toBe(false);
     });
 });
+
+// The password route is the pre-existing bug this file's fix addresses:
+// its Confirm Delete button was disabled before the decrypt and never
+// re-enabled on success, so a second delete in the same popup session
+// found a dead button. Now both routes re-enable through finishDelete().
+//
+// Against head these tests fail: with the re-enable absent, the button
+// stays disabled after the first delete, so the disabled assertions read
+// true where they expect false.
+describe("the password route's confirm button", () => {
+    test("is re-enabled after a successful delete", async () => {
+        const { deleteWallet, vault } = load();
+        vault.decryptWithPassword.mockResolvedValue();
+
+        await deleteWithPassword(deleteWallet, 1);
+
+        expect(node("btn-delete-wallet-confirm").disabled).toBe(false);
+        expect(
+            node("btn-delete-wallet-confirm").classList.contains("text-muted"),
+        ).toBe(false);
+    });
+
+    // The reported symptom: delete one wallet, then open Delete Wallet for
+    // a second one without reopening the popup. The button must be live on
+    // that second visit, and the second delete must actually persist.
+    test("a second delete works in the same popup session", async () => {
+        const { deleteWallet, vault, storage } = load();
+        vault.decryptWithPassword.mockResolvedValue();
+
+        await deleteWithPassword(deleteWallet, 1);
+
+        // Wallet 2 is gone; the list is now [Wallet 1, Wallet 3]. Opening
+        // the confirm screen for the wallet now at index 1 (Wallet 3) must
+        // find its button live, not the dead one the first delete left.
+        deleteWallet.show(1);
+        expect(node("btn-delete-wallet-confirm").disabled).toBe(false);
+
+        node("delete-wallet-password").value = "any password";
+        await click("btn-delete-wallet-confirm");
+
+        expect((await persistedWallets(storage)).map((w) => w.name)).toEqual([
+            "Wallet 1",
+        ]);
+    });
+});

tests/e2e/firefox/run.js

@@ -372,10 +372,10 @@ step("the loopback dApp page gets the real inpage provider", async (env) => {
         STEP_TIMEOUT_MS,
     );
 
-    // EIP-6963, asked of the provider itself. The announcement carries the
-    // uuid src/content/index.js reads out of extension storage — call site 1
-    // in the issue — and it has to name this extension and hand back the very
-    // object on window.ethereum.
+    // EIP-6963, asked of the provider itself. The announcement carries a
+    // UUIDv4 inpage.js generates fresh for this page load (nothing persists
+    // it — see issue #398) and has to name this extension and hand back the
+    // very object on window.ethereum.
     const announced = await d.executeAsync(
         `const done = arguments[arguments.length - 1];
          const onAnnounce = (e) => {
@@ -402,7 +402,7 @@ step("the loopback dApp page gets the real inpage provider", async (env) => {
     );
     assert(
         typeof announced.uuid === "string" && announced.uuid.length === 36,
-        "the announcement carries no stored provider uuid: " +
+        "the announcement carries no provider uuid: " +
             JSON.stringify(announced.uuid),
     );
 

tests/inpageProviderUuid.test.js

@@ -0,0 +1,103 @@
+// The EIP-6963 provider UUID inpage.js announces (src/content/inpage.js).
+//
+// The bug this pins down (issue #398): the UUID used to be generated once,
+// persisted in extension storage, and announced verbatim to every page on
+// every load and across browser restarts, so any site — connected or not —
+// could read a stable cross-site, cross-session identifier for the install.
+// EIP-6963 wants a fresh UUIDv4 per announcement instead. The fix generates
+// it per page load and stores nothing.
+//
+// inpage.js is a bare IIFE injected into the page's JS context, not a module;
+// see tests/inpageErrors.test.js for why it is evaluated against a stub window
+// rather than imported. Here the stub captures the CustomEvent that carries
+// the announcement, so the UUID this file reads is the one a real dApp's
+// eip6963:announceProvider listener would see.
+
+const fs = require("fs");
+const path = require("path");
+const { webcrypto } = require("crypto");
+
+const SOURCE = fs.readFileSync(
+    path.join(__dirname, "..", "src", "content", "inpage.js"),
+    "utf8",
+);
+
+const loadInto = new Function(
+    "window",
+    "self",
+    "crypto",
+    "Event",
+    "CustomEvent",
+    SOURCE,
+);
+
+class StubEvent {
+    constructor(type) {
+        this.type = type;
+    }
+}
+
+class StubCustomEvent extends StubEvent {
+    constructor(type, init) {
+        super(type);
+        this.detail = init && init.detail;
+    }
+}
+
+// Evaluate inpage.js once against a fresh stub window and return every UUID it
+// announced. A `requestProvider` event is dispatched too, so a re-announcement
+// within one load is observed as well as the announcement at load.
+function announcedUuids() {
+    const listeners = {};
+    const uuids = [];
+
+    const win = {
+        addEventListener(type, fn) {
+            (listeners[type] || (listeners[type] = [])).push(fn);
+        },
+        removeEventListener(type, fn) {
+            const fns = listeners[type];
+            if (!fns) return;
+            const i = fns.indexOf(fn);
+            if (i !== -1) fns.splice(i, 1);
+        },
+        postMessage() {},
+        dispatchEvent(event) {
+            if (event.type === "eip6963:announceProvider") {
+                uuids.push(event.detail.info.uuid);
+            }
+            for (const fn of (listeners[event.type] || []).slice()) fn(event);
+            return true;
+        },
+    };
+    win.window = win;
+
+    loadInto(win, win, webcrypto, StubEvent, StubCustomEvent);
+    win.dispatchEvent(new StubEvent("eip6963:requestProvider"));
+    return uuids;
+}
+
+const UUID_V4 =
+    /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/;
+
+describe("the EIP-6963 provider UUID is fresh per page load", () => {
+    test("a load announces a UUIDv4, unprompted, with nothing delivered", () => {
+        const uuids = announcedUuids();
+        expect(uuids.length).toBeGreaterThan(0);
+        expect(uuids[0]).toMatch(UUID_V4);
+    });
+
+    test("every announcement within one load carries the same UUID", () => {
+        const uuids = announcedUuids();
+        expect(uuids.length).toBeGreaterThan(1);
+        expect(new Set(uuids).size).toBe(1);
+    });
+
+    test("two page loads announce different UUIDs", () => {
+        const first = announcedUuids()[0];
+        const second = announcedUuids()[0];
+        expect(first).toMatch(UUID_V4);
+        expect(second).toMatch(UUID_V4);
+        expect(second).not.toBe(first);
+    });
+});