diff --git a/internal/blockchain/common/common.go b/internal/blockchain/common/common.go
index d15e0b8c4..bb5d952cd 100644
--- a/internal/blockchain/common/common.go
+++ b/internal/blockchain/common/common.go
@@ -392,9 +392,17 @@ func (s *subscriptions) GetSubscription(subID string) *SubscriptionInfo {
 }
 
 // Common function for handling receipts from blockchain connectors.
-func HandleReceipt(ctx context.Context, plugin core.Named, reply *BlockchainReceiptNotification, callbacks BlockchainCallbacks) error {
+func HandleReceipt(ctx context.Context, namespace string, plugin core.Named, reply *BlockchainReceiptNotification, callbacks BlockchainCallbacks) error {
 	l := log.L(ctx)
 
+	if namespace != "" {
+		opNamespace, _, _ := core.ParseNamespacedOpID(ctx, reply.Headers.ReceiptID)
+		if opNamespace != namespace {
+			l.Debugf("Ignoring operation update from other namespace: request=%s tx=%s message=%s", reply.Headers.ReceiptID, reply.TxHash, reply.Message)
+			return nil
+		}
+	}
+
 	if reply.Headers.ReceiptID == "" || reply.Headers.ReplyType == "" {
 		return fmt.Errorf("reply cannot be processed - missing fields: %+v", reply)
 	}
@@ -409,7 +417,7 @@ func HandleReceipt(ctx context.Context, plugin core.Named, reply *BlockchainRece
 		updateType = core.OpStatusFailed
 	}
 
-	// Slightly upgly conversion from ReceiptFromBlockchain -> JSONObject which the generic OperationUpdate() function requires
+	// Slightly ugly conversion from ReceiptFromBlockchain -> JSONObject which the generic OperationUpdate() function requires
 	var output fftypes.JSONObject
 	obj, err := json.Marshal(reply)
 	if err != nil {
diff --git a/internal/blockchain/common/common_test.go b/internal/blockchain/common/common_test.go
index 402a40339..8461bcc5e 100644
--- a/internal/blockchain/common/common_test.go
+++ b/internal/blockchain/common/common_test.go
@@ -342,15 +342,15 @@ func TestGoodSuccessReceipt(t *testing.T) {
 	cb.SetHandler("ns1", mcb)
 	mcb.On("OperationUpdate", "ns1", mock.Anything).Return()
 
-	err := HandleReceipt(context.Background(), nil, &reply, cb)
+	err := HandleReceipt(context.Background(), "", nil, &reply, cb)
 	assert.NoError(t, err)
 
 	reply.Headers.ReplyType = "TransactionUpdate"
-	err = HandleReceipt(context.Background(), nil, &reply, cb)
+	err = HandleReceipt(context.Background(), "", nil, &reply, cb)
 	assert.NoError(t, err)
 
 	reply.Headers.ReplyType = "TransactionFailed"
-	err = HandleReceipt(context.Background(), nil, &reply, cb)
+	err = HandleReceipt(context.Background(), "", nil, &reply, cb)
 	assert.NoError(t, err)
 }
 
@@ -365,7 +365,7 @@ func TestReceiptMarshallingError(t *testing.T) {
 	cb.SetHandler("ns1", mcb)
 	mcb.On("OperationUpdate", "ns1", mock.Anything).Return()
 
-	err := HandleReceipt(context.Background(), nil, &reply, cb)
+	err := HandleReceipt(context.Background(), "", nil, &reply, cb)
 	assert.Error(t, err)
 	assert.Regexp(t, ".*[^n]marshalling error.*", err)
 }
@@ -384,10 +384,19 @@ func TestBadReceipt(t *testing.T) {
 	data := fftypes.JSONAnyPtr(`{}`)
 	err := json.Unmarshal(data.Bytes(), &reply)
 	assert.NoError(t, err)
-	err = HandleReceipt(context.Background(), nil, &reply, nil)
+	err = HandleReceipt(context.Background(), "", nil, &reply, nil)
 	assert.Error(t, err)
 }
 
+func TestWrongNamespaceReceipt(t *testing.T) {
+	var reply BlockchainReceiptNotification
+	data := fftypes.JSONAnyPtr(`{}`)
+	err := json.Unmarshal(data.Bytes(), &reply)
+	assert.NoError(t, err)
+	err = HandleReceipt(context.Background(), "wrong", nil, &reply, nil)
+	assert.NoError(t, err)
+}
+
 func TestErrorWrappingConflict(t *testing.T) {
 	ctx := context.Background()
 	res := &resty.Response{
diff --git a/internal/blockchain/ethereum/ethereum.go b/internal/blockchain/ethereum/ethereum.go
index afa3c2c06..6ecfa283c 100644
--- a/internal/blockchain/ethereum/ethereum.go
+++ b/internal/blockchain/ethereum/ethereum.go
@@ -513,7 +513,7 @@ func (e *Ethereum) eventLoop(namespace string, wsconn wsclient.WSClient, closed
 				if !isBatch {
 					var receipt common.BlockchainReceiptNotification
 					_ = json.Unmarshal(msgBytes, &receipt)
-					err := common.HandleReceipt(ctx, e, &receipt, e.callbacks)
+					err := common.HandleReceipt(ctx, namespace, e, &receipt, e.callbacks)
 					if err != nil {
 						l.Errorf("Failed to process receipt: %+v", msgTyped)
 					}
@@ -1223,7 +1223,7 @@ func (e *Ethereum) GetTransactionStatus(ctx context.Context, operation *core.Ope
 				TxHash:     statusResponse.GetString("transactionHash"),
 				Message:    statusResponse.GetString("errorMessage"),
 				ProtocolID: receiptInfo.GetString("protocolId")}
-			err := common.HandleReceipt(ctx, e, receipt, e.callbacks)
+			err := common.HandleReceipt(ctx, operation.Namespace, e, receipt, e.callbacks)
 			if err != nil {
 				log.L(ctx).Warnf("Failed to handle receipt")
 			}
diff --git a/internal/blockchain/ethereum/ethereum_test.go b/internal/blockchain/ethereum/ethereum_test.go
index e9c036f3c..739a3e298 100644
--- a/internal/blockchain/ethereum/ethereum_test.go
+++ b/internal/blockchain/ethereum/ethereum_test.go
@@ -1835,7 +1835,7 @@ func TestHandleReceiptTXSuccess(t *testing.T) {
 	err := json.Unmarshal(data.Bytes(), &reply)
 	assert.NoError(t, err)
 
-	common.HandleReceipt(context.Background(), e, &reply, e.callbacks)
+	common.HandleReceipt(context.Background(), "ns1", e, &reply, e.callbacks)
 
 	em.AssertExpectations(t)
 }
@@ -1922,7 +1922,7 @@ func TestHandleReceiptTXUpdateEVMConnect(t *testing.T) {
 	assert.NoError(t, err)
 	expectedReceiptId := "ns1:" + operationID.String()
 	assert.Equal(t, reply.Headers.ReceiptID, expectedReceiptId)
-	common.HandleReceipt(context.Background(), e, &reply, e.callbacks)
+	common.HandleReceipt(context.Background(), "", e, &reply, e.callbacks)
 
 	em.AssertExpectations(t)
 }
@@ -1987,7 +1987,7 @@ func TestHandleMsgBatchBadData(t *testing.T) {
 	data := fftypes.JSONAnyPtr(`{}`)
 	err := json.Unmarshal(data.Bytes(), &reply)
 	assert.NoError(t, err)
-	common.HandleReceipt(context.Background(), e, &reply, e.callbacks)
+	common.HandleReceipt(context.Background(), "", e, &reply, e.callbacks)
 }
 
 func TestFormatNil(t *testing.T) {
diff --git a/internal/blockchain/fabric/fabric.go b/internal/blockchain/fabric/fabric.go
index 574e5d8e9..a854aceee 100644
--- a/internal/blockchain/fabric/fabric.go
+++ b/internal/blockchain/fabric/fabric.go
@@ -540,7 +540,7 @@ func (f *Fabric) eventLoop(namespace string, wsconn wsclient.WSClient, closed ch
 				var receipt common.BlockchainReceiptNotification
 				_ = json.Unmarshal(msgBytes, &receipt)
 
-				err := common.HandleReceipt(ctx, f, &receipt, f.callbacks)
+				err := common.HandleReceipt(ctx, namespace, f, &receipt, f.callbacks)
 				if err != nil {
 					l.Errorf("Failed to process receipt: %+v", msgTyped)
 				}
diff --git a/internal/blockchain/fabric/fabric_test.go b/internal/blockchain/fabric/fabric_test.go
index a839fa9ee..2453ba5d4 100644
--- a/internal/blockchain/fabric/fabric_test.go
+++ b/internal/blockchain/fabric/fabric_test.go
@@ -1815,7 +1815,7 @@ func TestHandleReceiptTXSuccess(t *testing.T) {
 
 	err := json.Unmarshal(data, &reply)
 	assert.NoError(t, err)
-	common.HandleReceipt(context.Background(), e, &reply, e.callbacks)
+	common.HandleReceipt(context.Background(), "ns1", e, &reply, e.callbacks)
 
 	em.AssertExpectations(t)
 }
@@ -1836,7 +1836,7 @@ func TestHandleReceiptNoRequestID(t *testing.T) {
 	data := []byte(`{}`)
 	err := json.Unmarshal(data, &reply)
 	assert.NoError(t, err)
-	common.HandleReceipt(context.Background(), e, &reply, e.callbacks)
+	common.HandleReceipt(context.Background(), "", e, &reply, e.callbacks)
 }
 
 func TestHandleReceiptFailedTx(t *testing.T) {
@@ -1876,7 +1876,7 @@ func TestHandleReceiptFailedTx(t *testing.T) {
 
 	err := json.Unmarshal(data, &reply)
 	assert.NoError(t, err)
-	common.HandleReceipt(context.Background(), e, &reply, e.callbacks)
+	common.HandleReceipt(context.Background(), "", e, &reply, e.callbacks)
 
 	em.AssertExpectations(t)
 }
diff --git a/internal/blockchain/tezos/tezos.go b/internal/blockchain/tezos/tezos.go
index 8dd1fb8d4..a2103ca4c 100644
--- a/internal/blockchain/tezos/tezos.go
+++ b/internal/blockchain/tezos/tezos.go
@@ -591,7 +591,7 @@ func (t *Tezos) GetTransactionStatus(ctx context.Context, operation *core.Operat
 				TxHash:     statusResponse.GetString("transactionHash"),
 				Message:    statusResponse.GetString("errorMessage"),
 				ProtocolID: receiptInfo.GetString("protocolId")}
-			err := common.HandleReceipt(ctx, t, receipt, t.callbacks)
+			err := common.HandleReceipt(ctx, operation.Namespace, t, receipt, t.callbacks)
 			if err != nil {
 				log.L(ctx).Warnf("Failed to handle receipt")
 			}
@@ -822,7 +822,7 @@ func (t *Tezos) eventLoop() {
 				var receipt common.BlockchainReceiptNotification
 				_ = json.Unmarshal(msgBytes, &receipt)
 
-				err := common.HandleReceipt(ctx, t, &receipt, t.callbacks)
+				err := common.HandleReceipt(ctx, "", t, &receipt, t.callbacks) // TODO: should be specific to a namespace
 				if err != nil {
 					l.Errorf("Failed to process receipt: %+v", msgTyped)
 				}
diff --git a/internal/blockchain/tezos/tezos_test.go b/internal/blockchain/tezos/tezos_test.go
index 9b545a4ca..6ed39ae65 100644
--- a/internal/blockchain/tezos/tezos_test.go
+++ b/internal/blockchain/tezos/tezos_test.go
@@ -695,7 +695,7 @@ func TestHandleReceiptTXSuccess(t *testing.T) {
 	err := json.Unmarshal(data.Bytes(), &reply)
 	assert.NoError(t, err)
 
-	common.HandleReceipt(context.Background(), tz, &reply, tz.callbacks)
+	common.HandleReceipt(context.Background(), "", tz, &reply, tz.callbacks)
 
 	tm.AssertExpectations(t)
 }
@@ -780,7 +780,7 @@ func TestHandleReceiptTXUpdateTezosConnect(t *testing.T) {
 	assert.NoError(t, err)
 	expectedReceiptId := "ns1:" + operationID.String()
 	assert.Equal(t, reply.Headers.ReceiptID, expectedReceiptId)
-	common.HandleReceipt(context.Background(), tz, &reply, tz.callbacks)
+	common.HandleReceipt(context.Background(), "", tz, &reply, tz.callbacks)
 
 	tm.AssertExpectations(t)
 }
@@ -797,7 +797,7 @@ func TestHandleMsgBatchBadData(t *testing.T) {
 	data := fftypes.JSONAnyPtr(`{}`)
 	err := json.Unmarshal(data.Bytes(), &reply)
 	assert.NoError(t, err)
-	common.HandleReceipt(context.Background(), tz, &reply, tz.callbacks)
+	common.HandleReceipt(context.Background(), "", tz, &reply, tz.callbacks)
 }
 
 func TestAddSubscription(t *testing.T) {