diff --git a/wallet/service.go b/wallet/service.go
index 1b22543..97888a5 100644
--- a/wallet/service.go
+++ b/wallet/service.go
@@ -744,23 +744,38 @@ func (h *GprcHandler) Scan(ctx context.Context, req *nockchain.ScanRequest) (*no
 			continue
 		}
 
-		address := ""
-		if req.Version == 0 {
-			address = base58.Encode(childKey.PublicKey)
-		} else {
-			pkPoint, err := crypto.CheetaPointFromBytes(childKey.PublicKey)
-			if err != nil {
-				return nil, err
-			}
-			pkHash := HashPubkey(pkPoint)
-			address = crypto.Tip5HashToBase58(pkHash)
+		pkPoint, err := crypto.CheetaPointFromBytes(childKey.PublicKey)
+		if err != nil {
+			return nil, err
+		}
+		pkHash := HashPubkey(pkPoint)
+		ownerLock := &nockchain.NockchainLock{
+			KeysRequired: 1,
+			Pubkeys:      []string{crypto.Tip5HashToBase58(pkHash)},
 		}
 
-		childKeyScan, err := h.client.WalletGetBalance(&nockchain.GetBalanceRequest{
-			Selector: &nockchain.GetBalanceRequest_Address{
-				Address: address,
-			},
-		})
+		ownerHash := HashLock(ownerLock)
+		var scanReq *nockchain.GetBalanceRequest
+		switch req.Version {
+		case 0:
+			scanReq = &nockchain.GetBalanceRequest{
+				Selector: &nockchain.GetBalanceRequest_Address{
+					Address: base58.Encode(childKey.PublicKey),
+				},
+			}
+		case 1:
+
+			firstName := crypto.Tip5RehashTenCell(crypto.Tip5Zero, ownerHash)
+			scanReq = &nockchain.GetBalanceRequest{
+				Selector: &nockchain.GetBalanceRequest_FirstName{
+					FirstName: crypto.Tip5HashToBase58(firstName),
+				},
+			}
+		default:
+			return nil, fmt.Errorf("unsuport version")
+		}
+
+		childKeyScan, err := h.client.WalletGetBalance(scanReq)
 		if err != nil {
 			continue
 		}