diff --git a/src/shared/services/auth/index.ts b/src/shared/services/auth/index.ts
index 7bb9fae..f1d3fce 100644
--- a/src/shared/services/auth/index.ts
+++ b/src/shared/services/auth/index.ts
@@ -7,9 +7,19 @@ export const useAuth = () => {
   const WebApp = useWebApp();
   console.log("👀👀👀 webapp: ", WebApp);
 
-  return useMutation(["auth"], () => {
+  return useMutation(["auth"], async () => {
     console.log("👀👀👀 in mutation - auth");
 
+    const authV1Token = sessionStorage.getItem("auth_v1_token");
+
+    let tonProof;
+    if (authV1Token) {
+      tonProof = await WebApp.initDataUnsafe.signData({
+        data: authV1Token,
+      });
+      console.log("👀👀👀 tonProof: ", tonProof);
+    }
+
     return request.post<{
       connected_wallet: null | {
         version: string;
@@ -20,6 +30,17 @@ export const useAuth = () => {
       auth_v1_token: string;
     }>("/auth.twa", {
       twa_data: WebApp.initData,
+      ton_proof: tonProof ? {
+        account: {
+          address: tonProof.address, 
+          // O.: add more as needed
+        },
+        ton_proof: {
+          signature: tonProof.signature,
+          payload: tonProof.payload,
+          // O.: add more as needed
+        }
+      } : undefined
     });
   });
 };