diff --git a/lib/types/siwe-types.js b/lib/types/siwe-types.js
--- a/lib/types/siwe-types.js
+++ b/lib/types/siwe-types.js
@@ -128,7 +128,7 @@
   +address: string,
   +message: string,
   +signature: string,
-  +nonceTimestamp: number,
+  +nonceTimestamp: ?number,
 };
 
 export type IdentityWalletRegisterInput = {
diff --git a/native/account/fullscreen-siwe-panel.react.js b/native/account/fullscreen-siwe-panel.react.js
--- a/native/account/fullscreen-siwe-panel.react.js
+++ b/native/account/fullscreen-siwe-panel.react.js
@@ -28,6 +28,8 @@
 } from '../utils/alert-messages.js';
 import Alert from '../utils/alert.js';
 
+const siweSignatureRequestData = { messageType: SIWEMessageTypes.MSG_AUTH };
+
 type Props = {
   +goBackToPrompt: () => mixed,
   +closing: boolean,
@@ -216,7 +218,7 @@
         onClosed={ifBeforeSuccessGoBackToPrompt}
         onClosing={ifBeforeSuccessGoBackToPrompt}
         onSuccessfulWalletSignature={onSuccess}
-        siweMessageType={SIWEMessageTypes.MSG_AUTH}
+        siweSignatureRequestData={siweSignatureRequestData}
         setLoading={setLoading}
       />
     </>
diff --git a/native/account/registration/connect-ethereum.react.js b/native/account/registration/connect-ethereum.react.js
--- a/native/account/registration/connect-ethereum.react.js
+++ b/native/account/registration/connect-ethereum.react.js
@@ -43,6 +43,10 @@
   exactSearchUserActionTypes,
 );
 
+const siweSignatureRequestData = {
+  messageType: SIWEMessageTypes.MSG_AUTH,
+};
+
 export type ConnectEthereumParams = {
   +userSelections: {
     +coolOrNerdMode?: ?CoolOrNerdMode,
@@ -196,7 +200,7 @@
         onClosed={onPanelClosed}
         closing={panelState === 'closing'}
         onSuccessfulWalletSignature={onSuccessfulWalletSignature}
-        siweMessageType={SIWEMessageTypes.MSG_AUTH}
+        siweSignatureRequestData={siweSignatureRequestData}
         setLoading={siwePanelSetLoading}
         keyserverCallParamOverride={serverCallParamOverride}
       />
@@ -204,8 +208,14 @@
   }
 
   const { ethereumAccount } = cachedSelections;
+  invariant(
+    !ethereumAccount || ethereumAccount.nonceTimestamp,
+    'nonceTimestamp must be set after connecting to Ethereum account',
+  );
   const nonceExpired =
-    ethereumAccount && siweNonceExpired(ethereumAccount.nonceTimestamp);
+    ethereumAccount &&
+    ethereumAccount.nonceTimestamp &&
+    siweNonceExpired(ethereumAccount.nonceTimestamp);
   const alreadyHasConnected = !!ethereumAccount && !nonceExpired;
   React.useEffect(() => {
     if (nonceExpired) {
diff --git a/native/account/registration/connect-farcaster.react.js b/native/account/registration/connect-farcaster.react.js
--- a/native/account/registration/connect-farcaster.react.js
+++ b/native/account/registration/connect-farcaster.react.js
@@ -63,9 +63,14 @@
   const goToNextStep = React.useCallback(
     (fid?: ?string) => {
       setWebViewState('closed');
-
+      invariant(
+        !ethereumAccount || ethereumAccount.nonceTimestamp,
+        'nonceTimestamp must be set after connecting to Ethereum account',
+      );
       const nonceExpired =
-        ethereumAccount && siweNonceExpired(ethereumAccount.nonceTimestamp);
+        ethereumAccount &&
+        ethereumAccount.nonceTimestamp &&
+        siweNonceExpired(ethereumAccount.nonceTimestamp);
       if (nonceExpired) {
         setCachedSelections(oldUserSelections => ({
           ...oldUserSelections,
diff --git a/native/account/registration/siwe-backup-message-creation.react.js b/native/account/registration/siwe-backup-message-creation.react.js
--- a/native/account/registration/siwe-backup-message-creation.react.js
+++ b/native/account/registration/siwe-backup-message-creation.react.js
@@ -26,6 +26,10 @@
 import { useSIWEPanelState } from '../siwe-hooks.js';
 import SIWEPanel from '../siwe-panel.react.js';
 
+const siweBackupSignatureRequestData = {
+  messageType: SIWEMessageTypes.MSG_BACKUP,
+};
+
 type CreateSIWEBackupMessageBaseProps = {
   +onSuccessfulWalletSignature: (result: SIWEResult) => void,
   +onExistingWalletSignature?: () => void,
@@ -57,7 +61,7 @@
             onClosed={onPanelClosed}
             closing={panelState === 'closing'}
             onSuccessfulWalletSignature={onSuccessfulWalletSignature}
-            siweMessageType={SIWEMessageTypes.MSG_BACKUP}
+            siweSignatureRequestData={siweBackupSignatureRequestData}
             setLoading={siwePanelSetLoading}
           />
         );
diff --git a/native/account/siwe-panel.react.js b/native/account/siwe-panel.react.js
--- a/native/account/siwe-panel.react.js
+++ b/native/account/siwe-panel.react.js
@@ -1,7 +1,6 @@
 // @flow
 
 import BottomSheet from '@gorhom/bottom-sheet';
-import invariant from 'invariant';
 import * as React from 'react';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
 import WebView from 'react-native-webview';
@@ -21,11 +20,12 @@
 import type {
   SIWEWebViewMessage,
   SIWEResult,
-  SIWEMessageType,
+  SIWESignatureRequestData,
 } from 'lib/types/siwe-types.js';
 import { getContentSigningKey } from 'lib/utils/crypto-utils.js';
 import { useDispatchActionPromise } from 'lib/utils/redux-promise-utils.js';
 import { usingCommServicesAccessToken } from 'lib/utils/services-utils.js';
+import { getPublicKeyFromSIWEStatement } from 'lib/utils/siwe-utils.js';
 
 import { useKeyboardHeight } from '../keyboard/keyboard-hooks.js';
 import { useSelector } from '../redux/redux-utils.js';
@@ -47,16 +47,15 @@
   legacySiweAuthActionTypes,
 );
 
-type NonceInfo = {
-  +nonce: string,
-  +nonceTimestamp: number,
-};
+type NonceInfo =
+  | { +nonceType: 'local', +nonce: string, +issuedAt: string }
+  | { +nonceType: 'remote', +nonce: string, +nonceTimestamp: number };
 
 type Props = {
   +onClosed: () => mixed,
   +onClosing: () => mixed,
   +onSuccessfulWalletSignature: SIWEResult => mixed,
-  +siweMessageType: SIWEMessageType,
+  +siweSignatureRequestData: SIWESignatureRequestData,
   +closing: boolean,
   +setLoading: boolean => mixed,
   +keyserverCallParamOverride?: Partial<ServerCallSelectorParams>,
@@ -77,7 +76,8 @@
   );
 
   const { onClosing } = props;
-  const { siweMessageType } = props;
+  const { messageType, siweNonce, siweStatement, siweIssuedAt } =
+    props.siweSignatureRequestData;
 
   const legacySiweAuthCallLoading = useSelector(
     state => legacySiweAuthLoadingStatusSelector(state) === 'loading',
@@ -92,13 +92,29 @@
   const nonceNotNeededRef = React.useRef(false);
 
   React.useEffect(() => {
+    if (siweNonce && siweStatement && siweIssuedAt) {
+      setNonceInfo({
+        nonce: siweNonce,
+        issuedAt: siweIssuedAt,
+        nonceType: 'local',
+      });
+      const siwePrimaryIdentityPublicKey =
+        getPublicKeyFromSIWEStatement(siweStatement);
+      setPrimaryIdentityPublicKey(siwePrimaryIdentityPublicKey);
+      nonceNotNeededRef.current = true;
+      return;
+    }
     if (nonceNotNeededRef.current) {
       return;
     }
     const generateNonce = async (nonceFunction: () => Promise<string>) => {
       try {
         const response = await nonceFunction();
-        setNonceInfo({ nonce: response, nonceTimestamp: Date.now() });
+        setNonceInfo({
+          nonce: response,
+          nonceTimestamp: Date.now(),
+          nonceType: 'remote',
+        });
       } catch (e) {
         Alert.alert(
           unknownErrorAlertDetails.title,
@@ -139,6 +155,9 @@
     getSIWENonceCall,
     identityGenerateNonce,
     onClosing,
+    siweNonce,
+    siweStatement,
+    siweIssuedAt,
   ]);
 
   const [isLoading, setLoading] = React.useState(true);
@@ -183,7 +202,6 @@
         if (address && signature) {
           nonceNotNeededRef.current = true;
           closeBottomSheet?.();
-          invariant(nonceTimestamp, 'nonceTimestamp should be set');
           await onSuccessfulWalletSignature({
             address,
             message,
@@ -220,16 +238,18 @@
   }, [closing, closeBottomSheet]);
 
   const nonce = nonceInfo?.nonce;
+  const issuedAt = nonceInfo?.issuedAt;
   const source = React.useMemo(
     () => ({
       uri: commSIWE,
       headers: {
         'siwe-nonce': nonce,
         'siwe-primary-identity-public-key': primaryIdentityPublicKey,
-        'siwe-message-type': siweMessageType,
+        'siwe-message-type': messageType,
+        'siwe-message-issued-at': issuedAt,
       },
     }),
-    [nonce, primaryIdentityPublicKey, siweMessageType],
+    [nonce, primaryIdentityPublicKey, messageType, issuedAt],
   );
 
   const onWebViewLoaded = React.useCallback(() => {