Add wallet Sign Message flow for CEX ownership verification

CHANGELOG.md

@@ -6,6 +6,7 @@
 - added: Verbose logging for exchange rate queries: the request body, resolved/rate-less counts, and errors are captured when the Verbose Logging setting is enabled.
 - added: Exchange-rate cache snapshot in the support log output, plus a `rates-cache-replay` script that re-runs those queries against the rates server and reports the result for each pair.
 - added: "-m" tag on the version number in the Help scene for Maestro test builds
+- added: Sign Message option in the wallet list menu for Bitcoin-family wallets, letting users prove self-hosted wallet ownership to exchanges by signing an exchange-provided message.
 - changed: Sign MoonPay buy/sell widget URLs and bind them to the customer's IP via the info server, for MoonPay's on-ramp IP-matching security upgrade.
 - changed: Style the entire "Already have an account? Sign in" line in the getting-started USP carousel with the tertiary link color, not just "Sign in".
 - changed: Refresh the buy, sell, sort, scan-QR and FIO names icons to the updated design.

src/actions/WalletListMenuActions.tsx

@@ -40,6 +40,7 @@ export type WalletListMenuKey =
   | 'exportWalletTransactions'
   | 'getSeed'
   | 'manageTokens'
+  | 'signMessage'
   | 'viewXPub'
   | 'goToParent'
   | 'getRawKeys'
@@ -76,6 +77,14 @@ export function walletListMenuAction(
       }
     }
 
+    case 'signMessage': {
+      return async (dispatch, getState) => {
+        navigation.navigate('signMessage', {
+          walletId
+        })
+      }
+    }
+
     case 'rawDelete': {
       return async (dispatch, getState) => {
         const state = getState()

src/components/Main.tsx

@@ -140,6 +140,7 @@ import { ReviewTriggerTestScene } from './scenes/ReviewTriggerTestScene'
 import { SecurityAlertsScene as SecurityAlertsSceneComponent } from './scenes/SecurityAlertsScene'
 import { SendScene2 as SendScene2Component } from './scenes/SendScene2'
 import { SettingsScene as SettingsSceneComponent } from './scenes/SettingsScene'
+import { SignMessageScene as SignMessageSceneComponent } from './scenes/SignMessageScene'
 import { SpendingLimitsScene as SpendingLimitsSceneComponent } from './scenes/SpendingLimitsScene'
 import { EarnScene as EarnSceneComponent } from './scenes/Staking/EarnScene'
 import { StakeModifyScene as StakeModifySceneComponent } from './scenes/Staking/StakeModifyScene'
@@ -283,6 +284,7 @@ const SecurityAlertsScene = ifLoggedIn(SecurityAlertsSceneComponent)
 const SellScene = ifLoggedIn(SellSceneComponent)
 const SendScene2 = ifLoggedIn(SendScene2Component)
 const SettingsScene = ifLoggedIn(SettingsSceneComponent)
+const SignMessageScene = ifLoggedIn(SignMessageSceneComponent)
 const SpendingLimitsScene = ifLoggedIn(SpendingLimitsSceneComponent)
 const StakeModifyScene = ifLoggedIn(StakeModifySceneComponent)
 const StakeOptionsScene = ifLoggedIn(StakeOptionsSceneComponent)
@@ -1101,6 +1103,13 @@ const EdgeAppStack: React.FC = () => {
           title: lstrings.title_settings
         }}
       />
+      <AppStack.Screen
+        name="signMessage"
+        component={SignMessageScene}
+        options={{
+          title: lstrings.sign_message_title
+        }}
+      />
       <AppStack.Screen
         name="spendingLimits"
         component={SpendingLimitsScene}

src/components/modals/WalletListMenuModal.tsx

@@ -51,6 +51,7 @@ const icons: Record<string, string> = {
   goToParent: 'upcircleo',
   manageTokens: 'plus',
   rawDelete: 'warning',
+  signMessage: 'edit',
   walletSettings: 'control-panel-settings',
   resync: 'sync',
   split: 'arrowsalt',
@@ -115,6 +116,36 @@ export const WALLET_LIST_MENU: Array<{
     label: lstrings.fragment_wallets_view_xpub,
     value: 'viewXPub'
   },
+  {
+    pluginIds: [
+      'badcoin',
+      'bitcoin',
+      'bitcoincash',
+      'bitcoincashtestnet',
+      'bitcoingold',
+      'bitcoingoldtestnet',
+      'bitcoinsv',
+      'bitcointestnet',
+      'bitcointestnet4',
+      'dash',
+      'digibyte',
+      'dogecoin',
+      'eboost',
+      'ecash',
+      'feathercoin',
+      'groestlcoin',
+      'litecoin',
+      'pivx',
+      'qtum',
+      'ravencoin',
+      'smartcash',
+      'ufo',
+      'vertcoin',
+      'zcoin'
+    ],
+    label: lstrings.fragment_wallets_sign_message,
+    value: 'signMessage'
+  },
   {
     pluginIds: ['monero', 'piratechain', 'zcash', 'zano'],
     label: lstrings.fragment_wallets_view_private_view_key,