diff --git a/CHANGELOG.md b/CHANGELOG.md
index c7bb4a5d..e19ac141 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -45,6 +45,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 * [#184](https://github.com/babylonlabs-io/finality-provider/pull/184) eots manager sign record store
 * [#189](https://github.com/babylonlabs-io/finality-provider/pull/189) Remove `fpd register-finality-provider` cmd
 * [#190](https://github.com/babylonlabs-io/finality-provider/pull/190) Benchmark pub rand
+* [#193](https://github.com/babylonlabs-io/finality-provider/pull/193) adds unsafeSignEOTS for e2e tests
 * [#195](https://github.com/babylonlabs-io/finality-provider/pull/195) Not block unjailing
 
 ### Bug Fixes
diff --git a/eotsmanager/client/rpcclient.go b/eotsmanager/client/rpcclient.go
index 821ecb18..c306e830 100644
--- a/eotsmanager/client/rpcclient.go
+++ b/eotsmanager/client/rpcclient.go
@@ -118,6 +118,25 @@ func (c *EOTSManagerGRpcClient) SignEOTS(uid, chaiID, msg []byte, height uint64,
 	return &s, nil
 }
 
+func (c *EOTSManagerGRpcClient) UnsafeSignEOTS(uid, chaiID, msg []byte, height uint64, passphrase string) (*btcec.ModNScalar, error) {
+	req := &proto.SignEOTSRequest{
+		Uid:        uid,
+		ChainId:    chaiID,
+		Msg:        msg,
+		Height:     height,
+		Passphrase: passphrase,
+	}
+	res, err := c.client.UnsafeSignEOTS(context.Background(), req)
+	if err != nil {
+		return nil, err
+	}
+
+	var s btcec.ModNScalar
+	s.SetByteSlice(res.Sig)
+
+	return &s, nil
+}
+
 func (c *EOTSManagerGRpcClient) SignSchnorrSig(uid, msg []byte, passphrase string) (*schnorr.Signature, error) {
 	req := &proto.SignSchnorrSigRequest{Uid: uid, Msg: msg, Passphrase: passphrase}
 	res, err := c.client.SignSchnorrSig(context.Background(), req)
diff --git a/eotsmanager/eotsmanager.go b/eotsmanager/eotsmanager.go
index 04d02316..017bd941 100644
--- a/eotsmanager/eotsmanager.go
+++ b/eotsmanager/eotsmanager.go
@@ -28,9 +28,15 @@ type EOTSManager interface {
 	// SignEOTS signs an EOTS using the private key of the finality provider and the corresponding
 	// secret randomness of the given chain at the given height
 	// It fails if the finality provider does not exist or there's no randomness committed to the given height
-	// or passPhrase is incorrect
+	// or passPhrase is incorrect. Has built-in anti-slashing mechanism to ensure signature
+	// for the same height will not be signed twice.
 	SignEOTS(uid []byte, chainID []byte, msg []byte, height uint64, passphrase string) (*btcec.ModNScalar, error)
 
+	// UnsafeSignEOTS should only be used in e2e tests for demonstration purposes.
+	// Does not offer double sign protection.
+	// Use SignEOTS for real operations.
+	UnsafeSignEOTS(uid []byte, chainID []byte, msg []byte, height uint64, passphrase string) (*btcec.ModNScalar, error)
+
 	// SignSchnorrSig signs a Schnorr signature using the private key of the finality provider
 	// It fails if the finality provider does not exist or the message size is not 32 bytes
 	// or passPhrase is incorrect
diff --git a/eotsmanager/localmanager.go b/eotsmanager/localmanager.go
index 45c57a28..45bd5ee5 100644
--- a/eotsmanager/localmanager.go
+++ b/eotsmanager/localmanager.go
@@ -205,6 +205,14 @@ func (lm *LocalEOTSManager) SignEOTS(fpPk []byte, chainID []byte, msg []byte, he
 			return &s, nil
 		}
 
+		lm.logger.Error(
+			"double sign error protection",
+			zap.String("fp", hex.EncodeToString(fpPk)),
+			zap.String("msg", hex.EncodeToString(msg)),
+			zap.Uint64("height", height),
+			zap.String("chainID", string(chainID)),
+		)
+
 		return nil, eotstypes.ErrDoubleSign
 	}
 
@@ -235,6 +243,25 @@ func (lm *LocalEOTSManager) SignEOTS(fpPk []byte, chainID []byte, msg []byte, he
 	return signedBytes, nil
 }
 
+// UnsafeSignEOTS should only be used in e2e test to demonstrate double sign
+func (lm *LocalEOTSManager) UnsafeSignEOTS(fpPk []byte, chainID []byte, msg []byte, height uint64, passphrase string) (*btcec.ModNScalar, error) {
+	privRand, _, err := lm.getRandomnessPair(fpPk, chainID, height, passphrase)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get private randomness: %w", err)
+	}
+
+	privKey, err := lm.getEOTSPrivKey(fpPk, passphrase)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get EOTS private key: %w", err)
+	}
+
+	// Update metrics
+	lm.metrics.IncrementEotsFpTotalEotsSignCounter(hex.EncodeToString(fpPk))
+	lm.metrics.SetEotsFpLastEotsSignHeight(hex.EncodeToString(fpPk), float64(height))
+
+	return eots.Sign(privKey, privRand, msg)
+}
+
 func (lm *LocalEOTSManager) SignSchnorrSig(fpPk []byte, msg []byte, passphrase string) (*schnorr.Signature, error) {
 	privKey, err := lm.getEOTSPrivKey(fpPk, passphrase)
 	if err != nil {
diff --git a/eotsmanager/proto/eotsmanager.pb.go b/eotsmanager/proto/eotsmanager.pb.go
index eaf5ac07..d1fa3a55 100644
--- a/eotsmanager/proto/eotsmanager.pb.go
+++ b/eotsmanager/proto/eotsmanager.pb.go
@@ -760,7 +760,7 @@ var file_eotsmanager_proto_rawDesc = []byte{
 	0x0a, 0x70, 0x61, 0x73, 0x73, 0x70, 0x68, 0x72, 0x61, 0x73, 0x65, 0x22, 0x2a, 0x0a, 0x16, 0x53,
 	0x69, 0x67, 0x6e, 0x53, 0x63, 0x68, 0x6e, 0x6f, 0x72, 0x72, 0x53, 0x69, 0x67, 0x52, 0x65, 0x73,
 	0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x10, 0x0a, 0x03, 0x73, 0x69, 0x67, 0x18, 0x01, 0x20, 0x01,
-	0x28, 0x0c, 0x52, 0x03, 0x73, 0x69, 0x67, 0x32, 0xb7, 0x03, 0x0a, 0x0b, 0x45, 0x4f, 0x54, 0x53,
+	0x28, 0x0c, 0x52, 0x03, 0x73, 0x69, 0x67, 0x32, 0xfa, 0x03, 0x0a, 0x0b, 0x45, 0x4f, 0x54, 0x53,
 	0x4d, 0x61, 0x6e, 0x61, 0x67, 0x65, 0x72, 0x12, 0x2f, 0x0a, 0x04, 0x50, 0x69, 0x6e, 0x67, 0x12,
 	0x12, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x50, 0x69, 0x6e, 0x67, 0x52, 0x65, 0x71, 0x75,
 	0x65, 0x73, 0x74, 0x1a, 0x13, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x50, 0x69, 0x6e, 0x67,
@@ -783,16 +783,20 @@ var file_eotsmanager_proto_rawDesc = []byte{
 	0x53, 0x12, 0x16, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x53, 0x69, 0x67, 0x6e, 0x45, 0x4f,
 	0x54, 0x53, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x17, 0x2e, 0x70, 0x72, 0x6f, 0x74,
 	0x6f, 0x2e, 0x53, 0x69, 0x67, 0x6e, 0x45, 0x4f, 0x54, 0x53, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e,
-	0x73, 0x65, 0x12, 0x4d, 0x0a, 0x0e, 0x53, 0x69, 0x67, 0x6e, 0x53, 0x63, 0x68, 0x6e, 0x6f, 0x72,
-	0x72, 0x53, 0x69, 0x67, 0x12, 0x1c, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x53, 0x69, 0x67,
-	0x6e, 0x53, 0x63, 0x68, 0x6e, 0x6f, 0x72, 0x72, 0x53, 0x69, 0x67, 0x52, 0x65, 0x71, 0x75, 0x65,
-	0x73, 0x74, 0x1a, 0x1d, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x53, 0x69, 0x67, 0x6e, 0x53,
-	0x63, 0x68, 0x6e, 0x6f, 0x72, 0x72, 0x53, 0x69, 0x67, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73,
-	0x65, 0x42, 0x3f, 0x5a, 0x3d, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f,
-	0x62, 0x61, 0x62, 0x79, 0x6c, 0x6f, 0x6e, 0x6c, 0x61, 0x62, 0x73, 0x2d, 0x69, 0x6f, 0x2f, 0x66,
-	0x69, 0x6e, 0x61, 0x6c, 0x69, 0x74, 0x79, 0x2d, 0x70, 0x72, 0x6f, 0x76, 0x69, 0x64, 0x65, 0x72,
-	0x2f, 0x65, 0x6f, 0x74, 0x73, 0x6d, 0x61, 0x6e, 0x61, 0x67, 0x65, 0x72, 0x2f, 0x70, 0x72, 0x6f,
-	0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x73, 0x65, 0x12, 0x41, 0x0a, 0x0e, 0x55, 0x6e, 0x73, 0x61, 0x66, 0x65, 0x53, 0x69, 0x67, 0x6e,
+	0x45, 0x4f, 0x54, 0x53, 0x12, 0x16, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x53, 0x69, 0x67,
+	0x6e, 0x45, 0x4f, 0x54, 0x53, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x17, 0x2e, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x53, 0x69, 0x67, 0x6e, 0x45, 0x4f, 0x54, 0x53, 0x52, 0x65, 0x73,
+	0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x4d, 0x0a, 0x0e, 0x53, 0x69, 0x67, 0x6e, 0x53, 0x63, 0x68,
+	0x6e, 0x6f, 0x72, 0x72, 0x53, 0x69, 0x67, 0x12, 0x1c, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e,
+	0x53, 0x69, 0x67, 0x6e, 0x53, 0x63, 0x68, 0x6e, 0x6f, 0x72, 0x72, 0x53, 0x69, 0x67, 0x52, 0x65,
+	0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x1d, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2e, 0x53, 0x69,
+	0x67, 0x6e, 0x53, 0x63, 0x68, 0x6e, 0x6f, 0x72, 0x72, 0x53, 0x69, 0x67, 0x52, 0x65, 0x73, 0x70,
+	0x6f, 0x6e, 0x73, 0x65, 0x42, 0x3f, 0x5a, 0x3d, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63,
+	0x6f, 0x6d, 0x2f, 0x62, 0x61, 0x62, 0x79, 0x6c, 0x6f, 0x6e, 0x6c, 0x61, 0x62, 0x73, 0x2d, 0x69,
+	0x6f, 0x2f, 0x66, 0x69, 0x6e, 0x61, 0x6c, 0x69, 0x74, 0x79, 0x2d, 0x70, 0x72, 0x6f, 0x76, 0x69,
+	0x64, 0x65, 0x72, 0x2f, 0x65, 0x6f, 0x74, 0x73, 0x6d, 0x61, 0x6e, 0x61, 0x67, 0x65, 0x72, 0x2f,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -828,15 +832,17 @@ var file_eotsmanager_proto_depIdxs = []int32{
 	4,  // 2: proto.EOTSManager.CreateRandomnessPairList:input_type -> proto.CreateRandomnessPairListRequest
 	6,  // 3: proto.EOTSManager.KeyRecord:input_type -> proto.KeyRecordRequest
 	8,  // 4: proto.EOTSManager.SignEOTS:input_type -> proto.SignEOTSRequest
-	10, // 5: proto.EOTSManager.SignSchnorrSig:input_type -> proto.SignSchnorrSigRequest
-	1,  // 6: proto.EOTSManager.Ping:output_type -> proto.PingResponse
-	3,  // 7: proto.EOTSManager.CreateKey:output_type -> proto.CreateKeyResponse
-	5,  // 8: proto.EOTSManager.CreateRandomnessPairList:output_type -> proto.CreateRandomnessPairListResponse
-	7,  // 9: proto.EOTSManager.KeyRecord:output_type -> proto.KeyRecordResponse
-	9,  // 10: proto.EOTSManager.SignEOTS:output_type -> proto.SignEOTSResponse
-	11, // 11: proto.EOTSManager.SignSchnorrSig:output_type -> proto.SignSchnorrSigResponse
-	6,  // [6:12] is the sub-list for method output_type
-	0,  // [0:6] is the sub-list for method input_type
+	8,  // 5: proto.EOTSManager.UnsafeSignEOTS:input_type -> proto.SignEOTSRequest
+	10, // 6: proto.EOTSManager.SignSchnorrSig:input_type -> proto.SignSchnorrSigRequest
+	1,  // 7: proto.EOTSManager.Ping:output_type -> proto.PingResponse
+	3,  // 8: proto.EOTSManager.CreateKey:output_type -> proto.CreateKeyResponse
+	5,  // 9: proto.EOTSManager.CreateRandomnessPairList:output_type -> proto.CreateRandomnessPairListResponse
+	7,  // 10: proto.EOTSManager.KeyRecord:output_type -> proto.KeyRecordResponse
+	9,  // 11: proto.EOTSManager.SignEOTS:output_type -> proto.SignEOTSResponse
+	9,  // 12: proto.EOTSManager.UnsafeSignEOTS:output_type -> proto.SignEOTSResponse
+	11, // 13: proto.EOTSManager.SignSchnorrSig:output_type -> proto.SignSchnorrSigResponse
+	7,  // [7:14] is the sub-list for method output_type
+	0,  // [0:7] is the sub-list for method input_type
 	0,  // [0:0] is the sub-list for extension type_name
 	0,  // [0:0] is the sub-list for extension extendee
 	0,  // [0:0] is the sub-list for field type_name
diff --git a/eotsmanager/proto/eotsmanager.proto b/eotsmanager/proto/eotsmanager.proto
index cc7efec0..ad32b192 100644
--- a/eotsmanager/proto/eotsmanager.proto
+++ b/eotsmanager/proto/eotsmanager.proto
@@ -23,6 +23,10 @@ service EOTSManager {
   rpc SignEOTS (SignEOTSRequest)
       returns (SignEOTSResponse);
 
+  // UnsafeSignEOTS used only for testing purpose. Use SignEOTS for real operations
+  rpc UnsafeSignEOTS (SignEOTSRequest)
+      returns (SignEOTSResponse);
+
   // SignSchnorrSig signs a Schnorr sig with the EOTS private key
   rpc SignSchnorrSig (SignSchnorrSigRequest)
       returns (SignSchnorrSigResponse);
diff --git a/eotsmanager/proto/eotsmanager_grpc.pb.go b/eotsmanager/proto/eotsmanager_grpc.pb.go
index 0a8814ad..3028009f 100644
--- a/eotsmanager/proto/eotsmanager_grpc.pb.go
+++ b/eotsmanager/proto/eotsmanager_grpc.pb.go
@@ -24,6 +24,7 @@ const (
 	EOTSManager_CreateRandomnessPairList_FullMethodName = "/proto.EOTSManager/CreateRandomnessPairList"
 	EOTSManager_KeyRecord_FullMethodName                = "/proto.EOTSManager/KeyRecord"
 	EOTSManager_SignEOTS_FullMethodName                 = "/proto.EOTSManager/SignEOTS"
+	EOTSManager_UnsafeSignEOTS_FullMethodName           = "/proto.EOTSManager/UnsafeSignEOTS"
 	EOTSManager_SignSchnorrSig_FullMethodName           = "/proto.EOTSManager/SignSchnorrSig"
 )
 
@@ -40,6 +41,8 @@ type EOTSManagerClient interface {
 	KeyRecord(ctx context.Context, in *KeyRecordRequest, opts ...grpc.CallOption) (*KeyRecordResponse, error)
 	// SignEOTS signs an EOTS with the EOTS private key and the relevant randomness
 	SignEOTS(ctx context.Context, in *SignEOTSRequest, opts ...grpc.CallOption) (*SignEOTSResponse, error)
+	// UnsafeSignEOTS used only for testing purpose. Use SignEOTS for real operations
+	UnsafeSignEOTS(ctx context.Context, in *SignEOTSRequest, opts ...grpc.CallOption) (*SignEOTSResponse, error)
 	// SignSchnorrSig signs a Schnorr sig with the EOTS private key
 	SignSchnorrSig(ctx context.Context, in *SignSchnorrSigRequest, opts ...grpc.CallOption) (*SignSchnorrSigResponse, error)
 }
@@ -97,6 +100,15 @@ func (c *eOTSManagerClient) SignEOTS(ctx context.Context, in *SignEOTSRequest, o
 	return out, nil
 }
 
+func (c *eOTSManagerClient) UnsafeSignEOTS(ctx context.Context, in *SignEOTSRequest, opts ...grpc.CallOption) (*SignEOTSResponse, error) {
+	out := new(SignEOTSResponse)
+	err := c.cc.Invoke(ctx, EOTSManager_UnsafeSignEOTS_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *eOTSManagerClient) SignSchnorrSig(ctx context.Context, in *SignSchnorrSigRequest, opts ...grpc.CallOption) (*SignSchnorrSigResponse, error) {
 	out := new(SignSchnorrSigResponse)
 	err := c.cc.Invoke(ctx, EOTSManager_SignSchnorrSig_FullMethodName, in, out, opts...)
@@ -119,6 +131,8 @@ type EOTSManagerServer interface {
 	KeyRecord(context.Context, *KeyRecordRequest) (*KeyRecordResponse, error)
 	// SignEOTS signs an EOTS with the EOTS private key and the relevant randomness
 	SignEOTS(context.Context, *SignEOTSRequest) (*SignEOTSResponse, error)
+	// UnsafeSignEOTS used only for testing purpose. Use SignEOTS for real operations
+	UnsafeSignEOTS(context.Context, *SignEOTSRequest) (*SignEOTSResponse, error)
 	// SignSchnorrSig signs a Schnorr sig with the EOTS private key
 	SignSchnorrSig(context.Context, *SignSchnorrSigRequest) (*SignSchnorrSigResponse, error)
 	mustEmbedUnimplementedEOTSManagerServer()
@@ -143,6 +157,9 @@ func (UnimplementedEOTSManagerServer) KeyRecord(context.Context, *KeyRecordReque
 func (UnimplementedEOTSManagerServer) SignEOTS(context.Context, *SignEOTSRequest) (*SignEOTSResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method SignEOTS not implemented")
 }
+func (UnimplementedEOTSManagerServer) UnsafeSignEOTS(context.Context, *SignEOTSRequest) (*SignEOTSResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method UnsafeSignEOTS not implemented")
+}
 func (UnimplementedEOTSManagerServer) SignSchnorrSig(context.Context, *SignSchnorrSigRequest) (*SignSchnorrSigResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method SignSchnorrSig not implemented")
 }
@@ -249,6 +266,24 @@ func _EOTSManager_SignEOTS_Handler(srv interface{}, ctx context.Context, dec fun
 	return interceptor(ctx, in, info, handler)
 }
 
+func _EOTSManager_UnsafeSignEOTS_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(SignEOTSRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(EOTSManagerServer).UnsafeSignEOTS(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: EOTSManager_UnsafeSignEOTS_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(EOTSManagerServer).UnsafeSignEOTS(ctx, req.(*SignEOTSRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _EOTSManager_SignSchnorrSig_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(SignSchnorrSigRequest)
 	if err := dec(in); err != nil {
@@ -294,6 +329,10 @@ var EOTSManager_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "SignEOTS",
 			Handler:    _EOTSManager_SignEOTS_Handler,
 		},
+		{
+			MethodName: "UnsafeSignEOTS",
+			Handler:    _EOTSManager_UnsafeSignEOTS_Handler,
+		},
 		{
 			MethodName: "SignSchnorrSig",
 			Handler:    _EOTSManager_SignSchnorrSig_Handler,
diff --git a/eotsmanager/service/rpcserver.go b/eotsmanager/service/rpcserver.go
index e13f44b5..7827bbee 100644
--- a/eotsmanager/service/rpcserver.go
+++ b/eotsmanager/service/rpcserver.go
@@ -98,6 +98,19 @@ func (r *rpcServer) SignEOTS(_ context.Context, req *proto.SignEOTSRequest) (
 	return &proto.SignEOTSResponse{Sig: sigBytes[:]}, nil
 }
 
+// UnsafeSignEOTS only used for testing purposes. Doesn't offer slashing protection!
+func (r *rpcServer) UnsafeSignEOTS(_ context.Context, req *proto.SignEOTSRequest) (
+	*proto.SignEOTSResponse, error) {
+	sig, err := r.em.UnsafeSignEOTS(req.Uid, req.ChainId, req.Msg, req.Height, req.Passphrase)
+	if err != nil {
+		return nil, err
+	}
+
+	sigBytes := sig.Bytes()
+
+	return &proto.SignEOTSResponse{Sig: sigBytes[:]}, nil
+}
+
 // SignSchnorrSig signs a Schnorr sig with the EOTS private key
 func (r *rpcServer) SignSchnorrSig(_ context.Context, req *proto.SignSchnorrSigRequest) (
 	*proto.SignSchnorrSigResponse, error) {
diff --git a/finality-provider/cmd/fpd/daemon/daemon_commands.go b/finality-provider/cmd/fpd/daemon/daemon_commands.go
index 3708d045..a943c824 100644
--- a/finality-provider/cmd/fpd/daemon/daemon_commands.go
+++ b/finality-provider/cmd/fpd/daemon/daemon_commands.go
@@ -359,6 +359,8 @@ func CommandAddFinalitySig() *cobra.Command {
 	}
 	cmd.Flags().String(fpdDaemonAddressFlag, defaultFpdDaemonAddress, "The RPC server address of fpd")
 	cmd.Flags().String(appHashFlag, defaultAppHashStr, "The last commit hash of the chain block")
+	cmd.Flags().Bool(checkDoubleSignFlag, true, "If 'true', uses anti-slashing protection when doing EOTS sign")
+
 	return cmd
 }
 
@@ -383,6 +385,11 @@ func runCommandAddFinalitySig(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("failed to read flag %s: %w", appHashFlag, err)
 	}
 
+	checkDoubleSign, err := flags.GetBool(checkDoubleSignFlag)
+	if err != nil {
+		return fmt.Errorf("failed to read flag %s: %w", checkDoubleSignFlag, err)
+	}
+
 	client, cleanUp, err := dc.NewFinalityProviderServiceGRpcClient(daemonAddress)
 	if err != nil {
 		return err
@@ -398,7 +405,7 @@ func runCommandAddFinalitySig(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	res, err := client.AddFinalitySignature(context.Background(), fpPk.MarshalHex(), blkHeight, appHash)
+	res, err := client.AddFinalitySignature(context.Background(), fpPk.MarshalHex(), blkHeight, appHash, checkDoubleSign)
 	if err != nil {
 		return err
 	}
diff --git a/finality-provider/cmd/fpd/daemon/flags.go b/finality-provider/cmd/fpd/daemon/flags.go
index d0f6b6f6..e20a2fe3 100644
--- a/finality-provider/cmd/fpd/daemon/flags.go
+++ b/finality-provider/cmd/fpd/daemon/flags.go
@@ -11,6 +11,7 @@ const (
 	hdPathFlag           = "hd-path"
 	chainIDFlag          = "chain-id"
 	signedFlag           = "signed"
+	checkDoubleSignFlag  = "check-double-sign"
 
 	// flags for description
 	monikerFlag         = "moniker"
diff --git a/finality-provider/proto/finality_providers.pb.go b/finality-provider/proto/finality_providers.pb.go
index fa9de0f6..2a1bb8e5 100644
--- a/finality-provider/proto/finality_providers.pb.go
+++ b/finality-provider/proto/finality_providers.pb.go
@@ -349,6 +349,8 @@ type AddFinalitySignatureRequest struct {
 	Height uint64 `protobuf:"varint,2,opt,name=height,proto3" json:"height,omitempty"`
 	// app_hash is the AppHash of the chain block
 	AppHash []byte `protobuf:"bytes,3,opt,name=app_hash,json=appHash,proto3" json:"app_hash,omitempty"`
+	// check_double_sign use double sign protection when doing EOTS sign
+	CheckDoubleSign bool `protobuf:"varint,4,opt,name=check_double_sign,json=checkDoubleSign,proto3" json:"check_double_sign,omitempty"`
 }
 
 func (x *AddFinalitySignatureRequest) Reset() {
@@ -404,6 +406,13 @@ func (x *AddFinalitySignatureRequest) GetAppHash() []byte {
 	return nil
 }
 
+func (x *AddFinalitySignatureRequest) GetCheckDoubleSign() bool {
+	if x != nil {
+		return x.CheckDoubleSign
+	}
+	return false
+}
+
 type AddFinalitySignatureResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1406,198 +1415,201 @@ var file_finality_providers_proto_rawDesc = []byte{
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+	0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/finality-provider/proto/finality_providers.proto b/finality-provider/proto/finality_providers.proto
index 3ec97fe4..10c617a5 100644
--- a/finality-provider/proto/finality_providers.proto
+++ b/finality-provider/proto/finality_providers.proto
@@ -81,6 +81,8 @@ message AddFinalitySignatureRequest {
     uint64 height = 2;
     // app_hash is the AppHash of the chain block
     bytes app_hash = 3;
+    // check_double_sign use double sign protection when doing EOTS sign
+    bool check_double_sign = 4;
 }
 
 message AddFinalitySignatureResponse {
diff --git a/finality-provider/service/client/rpcclient.go b/finality-provider/service/client/rpcclient.go
index 894f5923..b40bc3fa 100644
--- a/finality-provider/service/client/rpcclient.go
+++ b/finality-provider/service/client/rpcclient.go
@@ -74,11 +74,18 @@ func (c *FinalityProviderServiceGRpcClient) CreateFinalityProvider(
 	return res, nil
 }
 
-func (c *FinalityProviderServiceGRpcClient) AddFinalitySignature(ctx context.Context, fpPk string, height uint64, appHash []byte) (*proto.AddFinalitySignatureResponse, error) {
+func (c *FinalityProviderServiceGRpcClient) AddFinalitySignature(
+	ctx context.Context,
+	fpPk string,
+	height uint64,
+	appHash []byte,
+	checkDoubleSign bool,
+) (*proto.AddFinalitySignatureResponse, error) {
 	req := &proto.AddFinalitySignatureRequest{
-		BtcPk:   fpPk,
-		Height:  height,
-		AppHash: appHash,
+		BtcPk:           fpPk,
+		Height:          height,
+		AppHash:         appHash,
+		CheckDoubleSign: checkDoubleSign,
 	}
 
 	res, err := c.client.AddFinalitySignature(ctx, req)
diff --git a/finality-provider/service/fp_instance.go b/finality-provider/service/fp_instance.go
index 45fee92e..1c688f4a 100644
--- a/finality-provider/service/fp_instance.go
+++ b/finality-provider/service/fp_instance.go
@@ -681,7 +681,9 @@ func (fp *FinalityProviderInstance) SubmitBatchFinalitySignatures(blocks []*type
 // TestSubmitFinalitySignatureAndExtractPrivKey is exposed for presentation/testing purpose to allow manual sending finality signature
 // this API is the same as SubmitBatchFinalitySignatures except that we don't constraint the voting height and update status
 // Note: this should not be used in the submission loop
-func (fp *FinalityProviderInstance) TestSubmitFinalitySignatureAndExtractPrivKey(b *types.BlockInfo) (*types.TxResponse, *btcec.PrivateKey, error) {
+func (fp *FinalityProviderInstance) TestSubmitFinalitySignatureAndExtractPrivKey(
+	b *types.BlockInfo, useSafeEOTSFunc bool,
+) (*types.TxResponse, *btcec.PrivateKey, error) {
 	// get public randomness
 	prList, err := fp.getPubRandList(b.Height, 1)
 	if err != nil {
@@ -695,8 +697,22 @@ func (fp *FinalityProviderInstance) TestSubmitFinalitySignatureAndExtractPrivKey
 		return nil, nil, fmt.Errorf("failed to get public randomness inclusion proof: %w", err)
 	}
 
+	eotsSignerFunc := func(b *types.BlockInfo) (*bbntypes.SchnorrEOTSSig, error) {
+		msgToSign := getMsgToSignForVote(b.Height, b.Hash)
+		sig, err := fp.em.UnsafeSignEOTS(fp.btcPk.MustMarshal(), fp.GetChainID(), msgToSign, b.Height, fp.passphrase)
+		if err != nil {
+			return nil, fmt.Errorf("failed to sign EOTS: %w", err)
+		}
+
+		return bbntypes.NewSchnorrEOTSSigFromModNScalar(sig), nil
+	}
+
+	if useSafeEOTSFunc {
+		eotsSignerFunc = fp.signFinalitySig
+	}
+
 	// sign block
-	eotsSig, err := fp.signFinalitySig(b)
+	eotsSig, err := eotsSignerFunc(b)
 	if err != nil {
 		return nil, nil, err
 	}
diff --git a/finality-provider/service/rpcserver.go b/finality-provider/service/rpcserver.go
index 9cb68c1a..e86544af 100644
--- a/finality-provider/service/rpcserver.go
+++ b/finality-provider/service/rpcserver.go
@@ -156,7 +156,7 @@ func (r *rpcServer) AddFinalitySignature(_ context.Context, req *proto.AddFinali
 			Hash:   req.AppHash,
 		}
 
-		txRes, privKey, err := fpi.TestSubmitFinalitySignatureAndExtractPrivKey(b)
+		txRes, privKey, err := fpi.TestSubmitFinalitySignatureAndExtractPrivKey(b, req.CheckDoubleSign)
 		if err != nil {
 			return nil, err
 		}
diff --git a/itest/e2e_test.go b/itest/e2e_test.go
index 364dff18..e35e1b8a 100644
--- a/itest/e2e_test.go
+++ b/itest/e2e_test.go
@@ -1,6 +1,3 @@
-//go:build e2e
-// +build e2e
-
 package e2etest
 
 import (
@@ -85,7 +82,7 @@ func TestDoubleSigning(t *testing.T) {
 	finalizedBlocks := tm.WaitForNFinalizedBlocks(t, 1)
 
 	// test duplicate vote which should be ignored
-	res, extractedKey, err := fpIns.TestSubmitFinalitySignatureAndExtractPrivKey(finalizedBlocks[0])
+	res, extractedKey, err := fpIns.TestSubmitFinalitySignatureAndExtractPrivKey(finalizedBlocks[0], false)
 	require.NoError(t, err)
 	require.Nil(t, extractedKey)
 	require.Empty(t, res)
@@ -98,14 +95,17 @@ func TestDoubleSigning(t *testing.T) {
 		Height: finalizedBlocks[0].Height,
 		Hash:   datagen.GenRandomByteArray(r, 32),
 	}
-	_, _, err = fpIns.TestSubmitFinalitySignatureAndExtractPrivKey(b)
+
+	// confirm we have double sign protection
+	_, _, err = fpIns.TestSubmitFinalitySignatureAndExtractPrivKey(b, true)
 	require.Error(t, err)
+	require.Contains(t, err.Error(), "double sign")
 
-	// todo(lazar): implement UnsafeSignEOTS, containing logic without double sign protection
-	//require.NoError(t, err)
-	//require.NotNil(t, extractedKey)
-	//localKey := tm.GetFpPrivKey(t, fpIns.GetBtcPkBIP340().MustMarshal())
-	//require.True(t, localKey.Key.Equals(&extractedKey.Key) || localKey.Key.Negate().Equals(&extractedKey.Key))
+	_, extractedKey, err = fpIns.TestSubmitFinalitySignatureAndExtractPrivKey(b, false)
+	require.NoError(t, err)
+	require.NotNil(t, extractedKey)
+	localKey := tm.GetFpPrivKey(t, fpIns.GetBtcPkBIP340().MustMarshal())
+	require.True(t, localKey.Key.Equals(&extractedKey.Key) || localKey.Key.Negate().Equals(&extractedKey.Key))
 
 	t.Logf("the equivocation attack is successful")
 }