diff --git a/.env.example b/.env.example
index 1f2b5ba..39ee34e 100644
--- a/.env.example
+++ b/.env.example
@@ -22,6 +22,8 @@ EXPO_PUBLIC_APP_ENV=development
 
 # ─── WalletConnect (optional) ──────────────────────────────────────────────
 # Get a project ID at https://cloud.walletconnect.com
+# Required for Native Wallet Integration (MetaMask, Trust Wallet, etc.)
+# Connected wallets can be cryptographically verified via signature.
 # EXPO_PUBLIC_WALLET_CONNECT_PROJECT_ID=
 
 # ─── Embedded Wallets — Privy (optional) ──────────────────────────────
diff --git a/.maestro/07-walletconnect-flow.yaml b/.maestro/07-walletconnect-flow.yaml
index 7df0d6c..8203b54 100644
--- a/.maestro/07-walletconnect-flow.yaml
+++ b/.maestro/07-walletconnect-flow.yaml
@@ -56,6 +56,8 @@ appId: xyz.guildpass.mobile
     id: "connected-wallet-address"
 - assertVisible:
     text: "Manual Entry"
+- assertVisible:
+    text: "Unverified"
 
 # ── Step 7: Navigate to guilds and back ────────────────────────────────
 - tapOn:
diff --git a/app/profile.tsx b/app/profile.tsx
index 5b8559b..98dd547 100644
--- a/app/profile.tsx
+++ b/app/profile.tsx
@@ -25,13 +25,25 @@ const CONNECTION_LABELS: Record<string, string> = {
 
 export default function Profile() {
   const router = useRouter();
-  const { walletAddress, isConnected, connectionKind, connectManually, disconnect } = useWallet();
+  const { walletAddress, isConnected, connectionKind, isVerified, verifyOwnership, connectManually, disconnect } = useWallet();
   const { open } = useWalletConnectModal();
   const { isOffline } = useNetworkStatus();
   const [inputValue, setInputValue] = useState(walletAddress || "");
   const [error, setError] = useState<string | null>(null);
   const [showManualEntry, setShowManualEntry] = useState(false);
   const [wcConnecting, setWcConnecting] = useState(false);
+  const [isVerifying, setIsVerifying] = useState(false);
+  const [verifyError, setVerifyError] = useState<string | null>(null);
+
+  const handleVerifyOwnership = async () => {
+    setIsVerifying(true);
+    setVerifyError(null);
+    const { success, error } = await verifyOwnership();
+    if (!success) {
+      setVerifyError(error || "Verification failed");
+    }
+    setIsVerifying(false);
+  };
 
   // ── Field-level validation state ────────────────────────────────────
   const [fieldError, setFieldError] = useState<string | null>(null);
@@ -235,9 +247,41 @@ export default function Profile() {
               </Text>
               <View className="mb-4">
                 {walletAddress ? (
-                  <WalletAddress address={walletAddress} testID="connected-wallet-address" />
+                  <View className="flex-row items-center justify-between">
+                    <WalletAddress address={walletAddress} testID="connected-wallet-address" />
+                    {isVerified ? (
+                      <View className="bg-green-100 dark:bg-green-900/30 px-2 py-1 rounded">
+                        <Text className="text-green-700 dark:text-green-400 text-xs font-bold">✓ Verified</Text>
+                      </View>
+                    ) : connectionKind === "manual" ? (
+                      <View className="bg-slate-100 dark:bg-slate-800 px-2 py-1 rounded">
+                        <Text className="text-slate-500 dark:text-slate-400 text-xs font-bold">Unverified</Text>
+                      </View>
+                    ) : null}
+                  </View>
                 ) : null}
               </View>
+
+              {!isVerified && connectionKind !== "manual" ? (
+                <View className="mb-4 p-3 bg-primary/10 dark:bg-primary/5 rounded-lg border border-primary/20">
+                  <Text className="text-text dark:text-slate-100 text-sm mb-2 font-medium">
+                    Verify Ownership
+                  </Text>
+                  <Text className="text-text-muted dark:text-slate-400 text-xs mb-3">
+                    Sign a message to verify you control this wallet and unlock full access.
+                  </Text>
+                  {verifyError ? (
+                    <Text className="text-red-500 text-xs mb-3">{verifyError}</Text>
+                  ) : null}
+                  <Button
+                    title={isVerifying ? "Verifying..." : "Verify Wallet"}
+                    onPress={handleVerifyOwnership}
+                    loading={isVerifying}
+                    testID="verify-ownership-button"
+                  />
+                </View>
+              ) : null}
+
               <Button
                 title="Disconnect"
                 onPress={handleDisconnect}
diff --git a/docs/architecture.md b/docs/architecture.md
index 9a8d5f0..86c3d23 100644
--- a/docs/architecture.md
+++ b/docs/architecture.md
@@ -40,7 +40,7 @@ Each store lives in the feature that owns it and is the only owner of its state.
 
 | Store | Location | Owns | Persistence |
 | ----- | -------- | ---- | ----------- |
-| `useWalletStore` | `features/wallet/wallet.store.ts` | Connected address, connection status, connector kind | SecureStore |
+| `useWalletStore` | `features/wallet/wallet.store.ts` | Connected address, connection status, connector kind, cryptographic verification state (`isVerified`) | SecureStore |
 | `useSessionStore` | `features/session/session.store.ts` | Auth status, token, expiry, session adapter | SecureStore |
 | `useSyncStore` | `features/sync/sync.store.ts` | Sync status, per-entity sync metadata, unacknowledged corrections | SecureStore |
 | `useReconciliationStore` | `features/notifications/reconciliation.store.ts` | Highest processed `roleChangeSeq` per (guild, wallet) | SecureStore |
@@ -76,6 +76,8 @@ into `useWalletStore`:
 | **WalletConnect** | WalletConnect v2 | `walletconnect` | WC modal → EIP-1193 → `createWalletConnectConnector` |
 | **Embedded wallet** | Privy (`@privy-io/expo`) | `embedded` | Email OTP or Google OAuth → Privy provisions MPC wallet → `createEmbeddedConnector` wraps the address |
 
+**Trust Model & Verification:** Connecting a wallet via WalletConnect or entering one manually populates the address, but does not inherently prove cryptographic ownership. The `isVerified` state in `useWalletStore` tracks whether the user has successfully signed a verification message (`personal_sign`). Manually entered wallets are permanently unverified. Connected wallets require an explicit signature before `isVerified` becomes true, enabling stronger trust guarantees.
+
 **Key design principle:** Privy is only the provisioning layer. Once the embedded wallet
 address enters `useWalletStore`, every downstream flow (memberships, guilds, access checks,
 sync, attestations) sees a standard EVM address. No screen or hook needs to know the wallet
diff --git a/src/features/wallet/useWallet.ts b/src/features/wallet/useWallet.ts
index 667781a..df08ad2 100644
--- a/src/features/wallet/useWallet.ts
+++ b/src/features/wallet/useWallet.ts
@@ -14,6 +14,7 @@ export const useWallet = (): {
   walletAddress: string | null;
   isConnected: boolean;
   connectionKind: "manual" | "walletconnect" | "embedded" | "coinbase" | "metamask" | null;
+  isVerified: boolean;
   isHydrated: boolean;
   connectManually: (address: string) => { success: boolean; error?: string };
   /** Store an EVM address created by an embedded wallet provider. */
@@ -26,6 +27,7 @@ export const useWallet = (): {
     request(args: { method: string }): Promise<unknown>;
     disconnect(): Promise<void>;
   }) => Promise<{ success: boolean; error?: string }>;
+  verifyOwnership: () => Promise<{ success: boolean; error?: string }>;
   disconnect: () => Promise<void>;
 } => {
   const walletAddress = useWalletStore((s) => s.walletAddress);
@@ -35,10 +37,13 @@ export const useWallet = (): {
   const setWalletAddress = useWalletStore((s) => s.setWalletAddress);
   const storeDisconnect = useWalletStore((s) => s.disconnect);
 
+  const isVerified = useWalletStore((s) => s.isVerified);
+  const setVerified = useWalletStore((s) => s.setVerified);
+
   const connectManually = (address: string): { success: boolean; error?: string } => {
     const result = validateAndNormalizeAddress(address);
     if (!result.valid) return { success: false, error: result.error };
-    setWalletAddress(result.address, "manual");
+    setWalletAddress(result.address, "manual", false);
     void startWalletSession(result.address!);
     return { success: true };
   };
@@ -59,7 +64,8 @@ export const useWallet = (): {
       if (!accounts.length) return { success: false, error: "No accounts returned" };
       const result = validateAndNormalizeAddress(accounts[0]);
       if (!result.valid) return { success: false, error: result.error };
-      setWalletAddress(result.address, connector.type);
+      // Connected but not yet verified
+      setWalletAddress(result.address, connector.type, false);
       await startWalletSession(result.address!);
       return { success: true };
     } catch (e) {
@@ -79,6 +85,55 @@ export const useWallet = (): {
     [setWalletAddress],
   );
 
+  const verifyOwnership = useCallback(async (): Promise<{ success: boolean; error?: string }> => {
+    if (!isConnected || !walletAddress) {
+      return { success: false, error: "No wallet connected" };
+    }
+    
+    if (connectionKind === "manual") {
+      return { success: false, error: "Manual entries cannot be cryptographically verified" };
+    }
+
+    try {
+      // 1. Get the provider. For WalletConnect, it's stored globally.
+      const wcProvider = getWalletConnectProvider();
+      if (!wcProvider) {
+        return { success: false, error: "No active WalletConnect provider found" };
+      }
+
+      // 2. Request signature
+      const message = "Sign this message to verify your wallet ownership for GuildPass.";
+      
+      const { verifyMessage, stringToHex } = await import("viem");
+      const hexMessage = stringToHex(message);
+      
+      const signature = await wcProvider.request({
+        method: "personal_sign",
+        params: [hexMessage, walletAddress.toLowerCase()],
+      }) as string;
+
+      if (!signature) {
+        return { success: false, error: "User rejected the signature request" };
+      }
+
+      // 3. Verify signature using viem
+      const isValid = await verifyMessage({
+        address: walletAddress as `0x${string}`,
+        message,
+        signature: signature as `0x${string}`,
+      });
+
+      if (isValid) {
+        setVerified(true);
+        return { success: true };
+      } else {
+        return { success: false, error: "Signature verification failed" };
+      }
+    } catch (e) {
+      return { success: false, error: e instanceof Error ? e.message : "Verification failed" };
+    }
+  }, [isConnected, walletAddress, connectionKind, setVerified]);
+
   const disconnect = useCallback(async () => {
     // If connected via WalletConnect, tear down the WC session first
     if (connectionKind === "walletconnect") {
@@ -107,11 +162,13 @@ export const useWallet = (): {
     walletAddress,
     isConnected,
     connectionKind,
+    isVerified,
     isHydrated,
     connectManually,
     connectEmbeddedWallet,
     connectWithConnector,
     connectWalletConnect,
+    verifyOwnership,
     disconnect,
   };
 };
diff --git a/src/features/wallet/wallet.store.ts b/src/features/wallet/wallet.store.ts
index 445835f..5047fa3 100644
--- a/src/features/wallet/wallet.store.ts
+++ b/src/features/wallet/wallet.store.ts
@@ -10,9 +10,10 @@ export const useWalletStore = create<WalletState & WalletActions & { _hasHydrate
       walletAddress: null,
       isConnected: false,
       connectionKind: null,
+      isVerified: false,
       _hasHydrated: false,
       setHasHydrated: (state) => set({ _hasHydrated: state }),
-      setWalletAddress: (address, kind?: WalletConnectionKind) => {
+      setWalletAddress: (address, kind?: WalletConnectionKind, isVerified?: boolean) => {
         const result = validateAndNormalizeAddress(address);
         if (!result.valid) {
           return;
@@ -21,23 +22,27 @@ export const useWalletStore = create<WalletState & WalletActions & { _hasHydrate
           walletAddress: result.address,
           isConnected: true,
           connectionKind: kind ?? "manual",
+          isVerified: isVerified ?? false,
         });
       },
+      setVerified: (status: boolean) => set({ isVerified: status }),
       disconnect: () =>
         set({
           walletAddress: null,
           isConnected: false,
           connectionKind: null,
+          isVerified: false,
         }),
     }),
     {
       name: "wallet-storage",
       storage: createJSONStorage(() => migratingSecureStorage),
-      // Only persist the address, not transient WC session state
+      // Only persist the address, connection state, and verification status
       partialize: (state) => ({
         walletAddress: state.walletAddress,
         isConnected: state.isConnected,
         connectionKind: state.connectionKind,
+        isVerified: state.isVerified,
       }),
       onRehydrateStorage: () => (state) => {
         state?.setHasHydrated(true);
diff --git a/src/features/wallet/wallet.types.ts b/src/features/wallet/wallet.types.ts
index f7028cf..7a8d991 100644
--- a/src/features/wallet/wallet.types.ts
+++ b/src/features/wallet/wallet.types.ts
@@ -11,11 +11,14 @@ export type WalletState = {
   isConnected: boolean;
   /** Which provider established the current connection */
   connectionKind: WalletConnectionKind;
+  /** Whether ownership of the wallet has been verified via a signature */
+  isVerified: boolean;
   _hasHydrated: boolean;
 };
 
 export type WalletActions = {
-  setWalletAddress: (address: string | null, kind?: WalletConnectionKind) => void;
+  setWalletAddress: (address: string | null, kind?: WalletConnectionKind, isVerified?: boolean) => void;
+  setVerified: (status: boolean) => void;
   disconnect: () => void;
   setHasHydrated: (state: boolean) => void;
 };