diff --git a/proto/opinit/ophost/v1/tx.proto b/proto/opinit/ophost/v1/tx.proto
index 7546b1de..6e06180b 100644
--- a/proto/opinit/ophost/v1/tx.proto
+++ b/proto/opinit/ophost/v1/tx.proto
@@ -54,8 +54,8 @@ service Msg {
   // UpdateProposer defines a rpc handler method for MsgUpdateProposer.
   rpc UpdateProposer(MsgUpdateProposer) returns (MsgUpdateProposerResponse);
 
-  // UpdateChallenger defines a rpc handler method for MsgUpdateChallenger.
-  rpc UpdateChallenger(MsgUpdateChallenger) returns (MsgUpdateChallengerResponse);
+  // UpdateChallengers defines a rpc handler method for MsgUpdateChallengers.
+  rpc UpdateChallengers(MsgUpdateChallengers) returns (MsgUpdateChallengersResponse);
 
   // UpdateBatchInfo defines a rpc handler method for MsgUpdateBatchInfo.
   rpc UpdateBatchInfo(MsgUpdateBatchInfo) returns (MsgUpdateBatchInfoResponse);
@@ -220,21 +220,22 @@ message MsgUpdateProposerResponse {
 }
 
 // MsgUpdateChallenger is a message to change a challenger
-message MsgUpdateChallenger {
+message MsgUpdateChallengers {
   option (cosmos.msg.v1.signer) = "authority";
-  option (amino.name)           = "ophost/MsgUpdateChallenger";
+  option (amino.name)           = "ophost/MsgUpdateChallengers";
 
   // authority is the address that controls the module (defaults to x/gov unless overwritten)
-  // or the current challenger address.(supports a single challenger that can replace the existing challenger,
-  // excluding their own address)
+  // or the current challenger address.
+  //
+  // If the given authority is a challenger address, it has the ability to replace itself with another address.
   string authority = 1 [(gogoproto.moretags) = "yaml:\"authority\"", (cosmos_proto.scalar) = "cosmos.AddressString"];
   uint64 bridge_id = 2 [(gogoproto.moretags) = "yaml:\"bridge_id\""];
   repeated string new_challengers = 3
       [(gogoproto.moretags) = "yaml:\"new_challengers\"", (cosmos_proto.scalar) = "cosmos.AddressString"];
 }
 
-// MsgUpdateChallengerResponse returns a message handle result.
-message MsgUpdateChallengerResponse {
+// MsgUpdateChallengersResponse returns a message handle result.
+message MsgUpdateChallengersResponse {
   // last finalized output index
   uint64 output_index = 1;
   // last finalized l2 block number
@@ -268,8 +269,10 @@ message MsgUpdateMetadata {
   option (amino.name)           = "ophost/MsgUpdateMetadata";
 
   // authority is the address that controls the module (defaults to x/gov unless overwritten)
-  // or the current challenger address.(supports a single challenger that can replace the existing challenger,
-  // excluding their own address))
+  // or the current challenger address.
+  //
+  // If the given authority is a challenger address, it has the ability to replace oneself to another address or remove
+  // oneself.
   string authority = 1 [(gogoproto.moretags) = "yaml:\"authority\"", (cosmos_proto.scalar) = "cosmos.AddressString"];
   uint64 bridge_id = 2 [(gogoproto.moretags) = "yaml:\"bridge_id\""];
   bytes  metadata  = 3 [(gogoproto.moretags) = "yaml:\"metadata\""];
diff --git a/proto/opinit/ophost/v1/types.proto b/proto/opinit/ophost/v1/types.proto
index c1586ed2..a99edd63 100644
--- a/proto/opinit/ophost/v1/types.proto
+++ b/proto/opinit/ophost/v1/types.proto
@@ -84,6 +84,6 @@ message Output {
 
 // BatchInfoWithOutput defines the batch information with output.
 message BatchInfoWithOutput {
-  BatchInfo batchInfo = 1 [(gogoproto.nullable) = false, (amino.dont_omitempty) = true];
-  Output    output    = 2 [(gogoproto.nullable) = false, (amino.dont_omitempty) = true];
+  BatchInfo batch_info = 1 [(gogoproto.nullable) = false, (amino.dont_omitempty) = true];
+  Output    output     = 2 [(gogoproto.nullable) = false, (amino.dont_omitempty) = true];
 }
\ No newline at end of file
diff --git a/x/opchild/client/cli/tx.go b/x/opchild/client/cli/tx.go
index 866cae5e..723e02b0 100644
--- a/x/opchild/client/cli/tx.go
+++ b/x/opchild/client/cli/tx.go
@@ -261,7 +261,7 @@ func NewSetBridgeInfoCmd(ac address.Codec) *cobra.Command {
 			fmt.Sprintf(
 				`send a tx to set a bridge info with a config file as a json.
 				Example:
-				$ %s tx ophost set-bridge-info 1 init10d07y265gmmuvt4z0w9aw880jnsr700j55nka3 mahalo-2 07-tendermint-0 path/to/bridge-config.json
+				$ %s tx opchild set-bridge-info 1 init10d07y265gmmuvt4z0w9aw880jnsr700j55nka3 mahalo-2 07-tendermint-0 path/to/bridge-config.json
 				
 				Where bridge-config.json contains:
 				{
@@ -318,7 +318,7 @@ func NewSetBridgeInfoCmd(ac address.Codec) *cobra.Command {
 			}
 
 			bridgeConfig := ophosttypes.BridgeConfig{
-				Challengers:         []string{origConfig.Challenger},
+				Challengers:         origConfig.Challengers,
 				Proposer:            origConfig.Proposer,
 				SubmissionInterval:  submissionInterval,
 				FinalizationPeriod:  finalizationPeriod,
diff --git a/x/opchild/client/cli/tx_test.go b/x/opchild/client/cli/tx_test.go
index 94ebb511..15e56afb 100644
--- a/x/opchild/client/cli/tx_test.go
+++ b/x/opchild/client/cli/tx_test.go
@@ -421,7 +421,7 @@ func (s *CLITestSuite) TestNewSetBridgeInfo() {
 
 	invalidConfig.WriteString(`{}`)
 	validConfig.WriteString(`{
-        "challenger": "init1q6jhwnarkw2j5qqgx3qlu20k8nrdglft5ksr0g",
+        "challengers": ["init1q6jhwnarkw2j5qqgx3qlu20k8nrdglft5ksr0g"],
         "proposer": "init1k2svyvm60r8rhnzr9vemk5f6fksvm6tyeujp3c",
         "submission_interval": "100s",
         "finalization_period": "1000s",
diff --git a/x/ophost/client/cli/tx.go b/x/ophost/client/cli/tx.go
index 88cde72e..9020ccad 100644
--- a/x/ophost/client/cli/tx.go
+++ b/x/ophost/client/cli/tx.go
@@ -97,7 +97,7 @@ func NewCreateBridge(ac address.Codec) *cobra.Command {
 				
 				Where bridge-config.json contains:
 				{
-					"challenger": "bech32-address",
+					"challengers": ["bech32-address"],
 					"proposer": "bech32-addresss",
 					"submission_interval": "duration",
 					"finalization_period": "duration",
@@ -142,7 +142,7 @@ func NewCreateBridge(ac address.Codec) *cobra.Command {
 			}
 
 			config := types.BridgeConfig{
-				Challengers:         []string{origConfig.Challenger}, // Ensure Challenger is properly assigned
+				Challengers:         origConfig.Challengers, // Ensure Challenger is properly assigned
 				Proposer:            origConfig.Proposer,
 				SubmissionInterval:  submissionInterval,
 				FinalizationPeriod:  finalizationPeriod,
diff --git a/x/ophost/client/cli/tx_test.go b/x/ophost/client/cli/tx_test.go
index 4bedc4bd..992b210d 100644
--- a/x/ophost/client/cli/tx_test.go
+++ b/x/ophost/client/cli/tx_test.go
@@ -164,7 +164,7 @@ func (s *CLITestSuite) TestNewCreateBridge() {
 
 	invalidConfig.WriteString(`{}`)
 	validConfig.WriteString(`{
-        "challenger": "init1q6jhwnarkw2j5qqgx3qlu20k8nrdglft5ksr0g",
+        "challengers": ["init1q6jhwnarkw2j5qqgx3qlu20k8nrdglft5ksr0g"],
         "proposer": "init1k2svyvm60r8rhnzr9vemk5f6fksvm6tyeujp3c",
         "submission_interval": "100s",
         "finalization_period": "1000s",
diff --git a/x/ophost/client/cli/types.go b/x/ophost/client/cli/types.go
index e165c531..b6168f16 100644
--- a/x/ophost/client/cli/types.go
+++ b/x/ophost/client/cli/types.go
@@ -3,7 +3,7 @@ package cli
 // BridgeConfig defines the set of bridge config.
 // NOTE: it is a modified BridgeConfig from x/ophost/types/types.go to make unmarshal easier
 type BridgeCliConfig struct {
-	Challenger          string       `json:"challenger"`
+	Challengers         []string     `json:"challengers"`
 	Proposer            string       `json:"proposer"`
 	SubmissionInterval  string       `json:"submission_interval"`
 	FinalizationPeriod  string       `json:"finalization_period"`
diff --git a/x/ophost/keeper/msg_server.go b/x/ophost/keeper/msg_server.go
index f9816e7c..171e2cd6 100644
--- a/x/ophost/keeper/msg_server.go
+++ b/x/ophost/keeper/msg_server.go
@@ -184,15 +184,9 @@ func (ms MsgServer) DeleteOutput(ctx context.Context, req *types.MsgDeleteOutput
 	if err != nil {
 		return nil, err
 	}
-	permission := false
-	for _, c := range bridgeConfig.Challengers {
-		if c == challenger {
-			permission = true
-			break
-		}
-	}
+
 	// permission check
-	if !permission {
+	if !slices.Contains(bridgeConfig.Challengers, challenger) {
 		return nil, errors.ErrUnauthorized.Wrap("invalid challenger")
 	}
 
@@ -436,7 +430,7 @@ func (ms MsgServer) UpdateProposer(ctx context.Context, req *types.MsgUpdateProp
 	}, nil
 }
 
-func (ms MsgServer) UpdateChallenger(ctx context.Context, req *types.MsgUpdateChallenger) (*types.MsgUpdateChallengerResponse, error) {
+func (ms MsgServer) UpdateChallengers(ctx context.Context, req *types.MsgUpdateChallengers) (*types.MsgUpdateChallengersResponse, error) {
 	if err := req.Validate(ms.authKeeper.AddressCodec()); err != nil {
 		return nil, err
 	}
@@ -447,23 +441,27 @@ func (ms MsgServer) UpdateChallenger(ctx context.Context, req *types.MsgUpdateCh
 		return nil, err
 	}
 
-	if len(req.NewChallengers) == 0 {
-		return nil, errors.ErrUnauthorized.Wrap("invalid new challengers, at least one new challenger is required")
-	}
+	// permission check
 	if req.Authority == ms.authority {
-		// gov can update multiple challengers
 		config.Challengers = req.NewChallengers
-
 	} else if idx := slices.Index(config.Challengers, req.Authority); idx >= 0 {
+		removedChallengers := []string{}
+		for _, challenger := range config.Challengers {
+			if found := slices.Contains(req.NewChallengers, challenger); !found {
+				removedChallengers = append(removedChallengers, challenger)
+			}
+		}
 
-		// replace byself
-		if len(req.NewChallengers) != 1 {
-			return nil, errors.ErrUnauthorized.Wrap("invalid new challengers, only one new challenger is allowed to replace the old one")
+		originChallengersLen := len(config.Challengers)
+		newChallengersLen := len(req.NewChallengers)
+		removedChallengersLen := len(removedChallengers)
+		if removedChallengersLen != 1 || removedChallengers[0] != req.Authority || originChallengersLen-newChallengersLen < 0 {
+			return nil, types.ErrInvalidChallengerUpdate.Wrap("a challenger can replace only oneself or remove oneself")
 		}
-		config.Challengers[idx] = req.NewChallengers[0]
 
+		config.Challengers = req.NewChallengers
 	} else {
-		return nil, govtypes.ErrInvalidSigner.Wrapf("invalid authority; expected %s or in %s, got %s", ms.authority, config.Challengers, req.Authority)
+		return nil, govtypes.ErrInvalidSigner.Wrapf("invalid authority; expected %s or one in [%s], but got %s", ms.authority, strings.Join(config.Challengers, ","), req.Authority)
 	}
 
 	if err := ms.Keeper.bridgeHook.BridgeChallengersUpdated(ctx, bridgeId, config); err != nil {
@@ -486,7 +484,7 @@ func (ms MsgServer) UpdateChallenger(ctx context.Context, req *types.MsgUpdateCh
 		sdk.NewAttribute(types.AttributeKeyFinalizedL2BlockNumber, strconv.FormatUint(finalizedOutput.L2BlockNumber, 10)),
 	))
 
-	return &types.MsgUpdateChallengerResponse{
+	return &types.MsgUpdateChallengersResponse{
 		OutputIndex:   finalizedOutputIndex,
 		L2BlockNumber: finalizedOutput.L2BlockNumber,
 	}, nil
diff --git a/x/ophost/keeper/msg_server_test.go b/x/ophost/keeper/msg_server_test.go
index d47d5cc1..4323a77b 100644
--- a/x/ophost/keeper/msg_server_test.go
+++ b/x/ophost/keeper/msg_server_test.go
@@ -2,7 +2,6 @@ package keeper_test
 
 import (
 	"encoding/hex"
-	"slices"
 	"testing"
 	"time"
 
@@ -283,13 +282,13 @@ func Test_UpdateProposal(t *testing.T) {
 	require.Error(t, err)
 }
 
-func Test_UpdateChallenger(t *testing.T) {
+func Test_UpdateChallengers(t *testing.T) {
 	ctx, input := createDefaultTestInput(t)
 	ms := keeper.NewMsgServerImpl(input.OPHostKeeper)
 
 	config := types.BridgeConfig{
 		Proposer:            addrsStr[0],
-		Challengers:         []string{addrsStr[1]},
+		Challengers:         []string{addrsStr[1], addrsStr[2], addrsStr[3]},
 		SubmissionInterval:  time.Second * 10,
 		FinalizationPeriod:  time.Second * 60,
 		SubmissionStartTime: time.Now().UTC(),
@@ -303,37 +302,69 @@ func Test_UpdateChallenger(t *testing.T) {
 	// gov signer
 	govAddr, err := input.AccountKeeper.AddressCodec().BytesToString(authtypes.NewModuleAddress("gov"))
 	require.NoError(t, err)
-	msg := types.NewMsgUpdateChallenger(govAddr, 1, []string{addrsStr[2], addrsStr[3]})
-	_, err = ms.UpdateChallenger(ctx, msg)
+	msg := types.NewMsgUpdateChallengers(govAddr, 1, []string{addrsStr[2], addrsStr[3]})
+	_, err = ms.UpdateChallengers(ctx, msg)
 	require.NoError(t, err)
 	_config, err := ms.GetBridgeConfig(ctx, 1)
 	require.NoError(t, err)
-	require.True(t, slices.Contains(_config.Challengers, addrsStr[2]))
-	require.True(t, slices.Contains(input.BridgeHook.challengers, addrsStr[2]))
+	require.Equal(t, []string{addrsStr[2], addrsStr[3]}, _config.Challengers)
+	require.Equal(t, input.BridgeHook.challengers, _config.Challengers)
+
 	// current challenger
-	msg = types.NewMsgUpdateChallenger(addrsStr[2], 1, []string{addrsStr[4]})
-	_, err = ms.UpdateChallenger(ctx, msg)
+
+	// case 1. replace oneself
+	msg = types.NewMsgUpdateChallengers(addrsStr[2], 1, []string{addrsStr[3], addrsStr[4]})
+	_, err = ms.UpdateChallengers(ctx, msg)
 	require.NoError(t, err)
 	_config, err = ms.GetBridgeConfig(ctx, 1)
 	require.NoError(t, err)
-	require.True(t, slices.Contains(_config.Challengers, addrsStr[4]))
-	require.True(t, slices.Contains(input.BridgeHook.challengers, addrsStr[4]))
+	require.Equal(t, []string{addrsStr[3], addrsStr[4]}, _config.Challengers)
+	require.Equal(t, input.BridgeHook.challengers, _config.Challengers)
+
+	// case 2. try to remove other challenger
+	msg = types.NewMsgUpdateChallengers(addrsStr[4], 1, []string{addrsStr[4]})
+	_, err = ms.UpdateChallengers(ctx, msg)
+	require.Error(t, err)
+
+	// case 2. try to replace other challenger
+	msg = types.NewMsgUpdateChallengers(addrsStr[4], 1, []string{addrsStr[2], addrsStr[4]})
+	_, err = ms.UpdateChallengers(ctx, msg)
+	require.Error(t, err)
+
+	// case 3. remove oneself
+	msg = types.NewMsgUpdateChallengers(addrsStr[3], 1, []string{addrsStr[4]})
+	_, err = ms.UpdateChallengers(ctx, msg)
+	require.NoError(t, err)
+	_config, err = ms.GetBridgeConfig(ctx, 1)
+	require.NoError(t, err)
+	require.Equal(t, []string{addrsStr[4]}, _config.Challengers)
+	require.Equal(t, input.BridgeHook.challengers, _config.Challengers)
+
+	// case 4. try to add more challenger
+	msg = types.NewMsgUpdateChallengers(addrsStr[4], 1, []string{addrsStr[3], addrsStr[4]})
+	_, err = ms.UpdateChallengers(ctx, msg)
+	require.Error(t, err)
+
+	// case 5. try to add more challenger with replace
+	msg = types.NewMsgUpdateChallengers(addrsStr[4], 1, []string{addrsStr[2], addrsStr[3]})
+	_, err = ms.UpdateChallengers(ctx, msg)
+	require.Error(t, err)
 
 	// invalid signer
 	invalidAddr, err := input.AccountKeeper.AddressCodec().BytesToString(authtypes.NewModuleAddress(types.ModuleName))
 	require.NoError(t, err)
-	msg = types.NewMsgUpdateChallenger(invalidAddr, 1, []string{addrsStr[1]})
+	msg = types.NewMsgUpdateChallengers(invalidAddr, 1, []string{addrsStr[1]})
 	require.NoError(t, err)
 
-	_, err = ms.UpdateChallenger(
+	_, err = ms.UpdateChallengers(
 		ctx,
 		msg,
 	)
 	require.Error(t, err)
 
 	// invalid case
-	msg = types.NewMsgUpdateChallenger(govAddr, 1, []string{})
-	_, err = ms.UpdateChallenger(ctx, msg)
+	msg = types.NewMsgUpdateChallengers(govAddr, 1, []string{})
+	_, err = ms.UpdateChallengers(ctx, msg)
 	require.Error(t, err)
 }
 
diff --git a/x/ophost/types/bridge_config.go b/x/ophost/types/bridge_config.go
index 31aa8a43..1744c00a 100644
--- a/x/ophost/types/bridge_config.go
+++ b/x/ophost/types/bridge_config.go
@@ -10,11 +10,17 @@ import (
 )
 
 func (config BridgeConfig) Validate(ac address.Codec) error {
-	var err error
+	challengerDupMap := make(map[string]bool, len(config.Challengers))
 	for _, challenger := range config.Challengers {
-		if _, err = ac.StringToBytes(challenger); err != nil {
+		if _, err := ac.StringToBytes(challenger); err != nil {
 			return err
 		}
+
+		if _, ok := challengerDupMap[challenger]; ok {
+			return errors.Wrapf(sdkerrors.ErrInvalidRequest, "challengers must be unique")
+		}
+
+		challengerDupMap[challenger] = true
 	}
 
 	if _, err := ac.StringToBytes(config.Proposer); err != nil {
diff --git a/x/ophost/types/codec.go b/x/ophost/types/codec.go
index 542c4bf6..ce6b612c 100644
--- a/x/ophost/types/codec.go
+++ b/x/ophost/types/codec.go
@@ -18,7 +18,7 @@ func RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {
 	legacy.RegisterAminoMsg(cdc, &MsgInitiateTokenDeposit{}, "ophost/MsgInitiateTokenDeposit")
 	legacy.RegisterAminoMsg(cdc, &MsgFinalizeTokenWithdrawal{}, "ophost/MsgFinalizeTokenWithdrawal")
 	legacy.RegisterAminoMsg(cdc, &MsgUpdateProposer{}, "ophost/MsgUpdateProposer")
-	legacy.RegisterAminoMsg(cdc, &MsgUpdateChallenger{}, "ophost/MsgUpdateChallenger")
+	legacy.RegisterAminoMsg(cdc, &MsgUpdateChallengers{}, "ophost/MsgUpdateChallengers")
 	legacy.RegisterAminoMsg(cdc, &MsgUpdateBatchInfo{}, "ophost/MsgUpdateBatchInfo")
 	legacy.RegisterAminoMsg(cdc, &MsgUpdateParams{}, "ophost/MsgUpdateParams")
 
@@ -36,7 +36,7 @@ func RegisterInterfaces(registry codectypes.InterfaceRegistry) {
 		&MsgInitiateTokenDeposit{},
 		&MsgFinalizeTokenWithdrawal{},
 		&MsgUpdateProposer{},
-		&MsgUpdateChallenger{},
+		&MsgUpdateChallengers{},
 		&MsgUpdateBatchInfo{},
 		&MsgUpdateParams{},
 	)
diff --git a/x/ophost/types/error.go b/x/ophost/types/error.go
index 2025420b..08ed3c6b 100644
--- a/x/ophost/types/error.go
+++ b/x/ophost/types/error.go
@@ -19,4 +19,5 @@ var (
 	ErrEmptyBatchInfo             = errorsmod.Register(ModuleName, 12, "empty batch info")
 	ErrInvalidBridgeMetadata      = errorsmod.Register(ModuleName, 13, "invalid bridge metadata")
 	ErrInvalidBatchInfo           = errorsmod.Register(ModuleName, 14, "invalid batch info")
+	ErrInvalidChallengerUpdate    = errorsmod.Register(ModuleName, 15, "invalid challenger update")
 )
diff --git a/x/ophost/types/genesis.go b/x/ophost/types/genesis.go
index 39b3df55..b8a8a14a 100644
--- a/x/ophost/types/genesis.go
+++ b/x/ophost/types/genesis.go
@@ -72,6 +72,7 @@ func ValidateGenesis(data *GenesisState, ac address.Codec) error {
 		if len(bridge.BatchInfos) == 0 {
 			return ErrEmptyBatchInfo
 		}
+
 		// last batchinfo should be same with bridgeconfig batchinfo
 		if bridge.BatchInfos[len(bridge.BatchInfos)-1].BatchInfo != bridge.BridgeConfig.BatchInfo ||
 			!bridge.BatchInfos[0].Output.IsEmpty() {
diff --git a/x/ophost/types/hook/bridge_hook.go b/x/ophost/types/hook/bridge_hook.go
index 9c3470a0..e87a59f1 100644
--- a/x/ophost/types/hook/bridge_hook.go
+++ b/x/ophost/types/hook/bridge_hook.go
@@ -26,7 +26,7 @@ type ChannelKeeper interface {
 
 type PermKeeper interface {
 	HasPermission(ctx context.Context, portID, channelID string, relayer sdk.AccAddress) (bool, error)
-	SetPermissionedRelayers(ctx context.Context, portID, channelID string, relayer []sdk.AccAddress) error
+	SetPermissionedRelayers(ctx context.Context, portID, channelID string, relayers []sdk.AccAddress) error
 }
 
 func NewBridgeHook(channelKeeper ChannelKeeper, permKeeper PermKeeper, ac address.Codec) BridgeHook {
@@ -43,12 +43,20 @@ func (h BridgeHook) BridgeCreated(
 		return nil
 	}
 
+	// TODO (reviewer): This is a temporary solution to allow only one challenger on bridge creation.
 	if len(bridgeConfig.Challengers) != 1 {
-		return errors.New("only one challenger is allowed on bridge creation")
+		return errors.New("bridge must have exactly one challenger on creation")
+	}
+
+	challengers := make([]sdk.AccAddress, len(bridgeConfig.Challengers))
+	for i, challenger := range bridgeConfig.Challengers {
+		challengerAddr, err := h.ac.StringToBytes(challenger)
+		if err != nil {
+			return err
+		}
+
+		challengers[i] = challengerAddr
 	}
-	challengers := make([]sdk.AccAddress, 1)
-	challengerStr, _ := h.ac.StringToBytes(bridgeConfig.Challengers[0])
-	challengers[0] = challengerStr
 
 	sdkCtx := sdk.UnwrapSDKContext(ctx)
 	for _, permChannel := range metadata.PermChannels {
@@ -58,6 +66,8 @@ func (h BridgeHook) BridgeCreated(
 		} else if seq != 1 {
 			return channeltypes.ErrChannelExists.Wrap("cannot register permissioned relayer for the channel in use")
 		}
+
+		// register challengers as channel relayer
 		if err := h.IBCPermKeeper.SetPermissionedRelayers(sdkCtx, portID, channelID, challengers); err != nil {
 			return err
 		}
@@ -76,22 +86,23 @@ func (h BridgeHook) BridgeChallengersUpdated(
 		return nil
 	}
 
-	var challengers []sdk.AccAddress
-	for _, challenger := range bridgeConfig.Challengers {
-		challenger, err := h.ac.StringToBytes(challenger)
+	challengers := make([]sdk.AccAddress, len(bridgeConfig.Challengers))
+	for i, challenger := range bridgeConfig.Challengers {
+		challengerAddr, err := h.ac.StringToBytes(challenger)
 		if err != nil {
 			return err
 		}
-		challengers = append(challengers, challenger)
+
+		challengers[i] = challengerAddr
 	}
+
 	sdkCtx := sdk.UnwrapSDKContext(ctx)
 	for _, permChannel := range metadata.PermChannels {
 		portID, channelID := permChannel.PortID, permChannel.ChannelID
-		// register challenger as channel relayer
+		// register challengers as channel relayers
 		if err := h.IBCPermKeeper.SetPermissionedRelayers(sdkCtx, portID, channelID, challengers); err != nil {
 			return err
 		}
-
 	}
 
 	return nil
@@ -124,36 +135,45 @@ func (h BridgeHook) BridgeMetadataUpdated(
 		return nil
 	}
 
-	var challengers []sdk.AccAddress
-	for _, challenger := range bridgeConfig.Challengers {
-		challenger, err := h.ac.StringToBytes(challenger)
+	challengers := make([]sdk.AccAddress, len(bridgeConfig.Challengers))
+	for i, challenger := range bridgeConfig.Challengers {
+		challengerAddr, err := h.ac.StringToBytes(challenger)
 		if err != nil {
 			return err
 		}
-		challengers = append(challengers, challenger)
+
+		challengers[i] = challengerAddr
 	}
 
 	sdkCtx := sdk.UnwrapSDKContext(ctx)
 	for _, permChannel := range metadata.PermChannels {
 		portID, channelID := permChannel.PortID, permChannel.ChannelID
+
+		hasPermission := true
+
+		// check if the challengers are already registered as a permissioned relayers
 		for _, challenger := range challengers {
-			// check if the relayer is already registered as a permissioned relayer
-			if hasPermission, err := h.IBCPermKeeper.HasPermission(ctx, portID, channelID, challenger); err != nil {
+			if hasPerm, err := h.IBCPermKeeper.HasPermission(ctx, portID, channelID, challenger); err != nil {
 				return err
-			} else if hasPermission {
-				continue
+			} else if !hasPerm {
+				hasPermission = false
+				break
 			}
+		}
 
-			if seq, ok := h.IBCChannelKeeper.GetNextSequenceSend(sdkCtx, portID, channelID); !ok {
-				return channeltypes.ErrChannelNotFound.Wrap("failed to register permissioned relayer")
-			} else if seq != 1 {
-				return channeltypes.ErrChannelExists.Wrap("cannot register permissioned relayer for the channel in use")
-			}
+		if hasPermission {
+			continue
+		}
 
-			// register challenger as channel relayer
-			if err := h.IBCPermKeeper.SetPermissionedRelayers(sdkCtx, portID, channelID, challengers); err != nil {
-				return err
-			}
+		if seq, ok := h.IBCChannelKeeper.GetNextSequenceSend(sdkCtx, portID, channelID); !ok {
+			return channeltypes.ErrChannelNotFound.Wrap("failed to register permissioned relayer")
+		} else if seq != 1 {
+			return channeltypes.ErrChannelExists.Wrap("cannot register permissioned relayer for the channel in use")
+		}
+
+		// register challengers as channel relayers
+		if err := h.IBCPermKeeper.SetPermissionedRelayers(sdkCtx, portID, channelID, challengers); err != nil {
+			return err
 		}
 	}
 
diff --git a/x/ophost/types/tx.go b/x/ophost/types/tx.go
index 6ca4efa5..b91c401c 100644
--- a/x/ophost/types/tx.go
+++ b/x/ophost/types/tx.go
@@ -13,7 +13,7 @@ var (
 	_ sdk.Msg = &MsgFinalizeTokenWithdrawal{}
 	_ sdk.Msg = &MsgInitiateTokenDeposit{}
 	_ sdk.Msg = &MsgUpdateProposer{}
-	_ sdk.Msg = &MsgUpdateChallenger{}
+	_ sdk.Msg = &MsgUpdateChallengers{}
 	_ sdk.Msg = &MsgUpdateBatchInfo{}
 	_ sdk.Msg = &MsgUpdateMetadata{}
 	_ sdk.Msg = &MsgUpdateParams{}
@@ -303,23 +303,23 @@ func (msg MsgUpdateProposer) Validate(accAddressCodec address.Codec) error {
 	return nil
 }
 
-/* MsgUpdateChallenger */
+/* MsgUpdateChallengers */
 
-// NewMsgUpdateChallenger creates a new MsgUpdateChallenger instance.
-func NewMsgUpdateChallenger(
+// NewMsgUpdateChallengers creates a new MsgUpdateChallengers instance.
+func NewMsgUpdateChallengers(
 	authority string,
 	bridgeId uint64,
 	newChallengers []string,
-) *MsgUpdateChallenger {
-	return &MsgUpdateChallenger{
+) *MsgUpdateChallengers {
+	return &MsgUpdateChallengers{
 		Authority:      authority,
 		BridgeId:       bridgeId,
 		NewChallengers: newChallengers,
 	}
 }
 
-// Validate performs basic MsgUpdateChallenger message validation.
-func (msg MsgUpdateChallenger) Validate(accAddressCodec address.Codec) error {
+// Validate performs basic MsgUpdateChallengers message validation.
+func (msg MsgUpdateChallengers) Validate(accAddressCodec address.Codec) error {
 	if _, err := accAddressCodec.StringToBytes(msg.Authority); err != nil {
 		return err
 	}
@@ -327,11 +327,23 @@ func (msg MsgUpdateChallenger) Validate(accAddressCodec address.Codec) error {
 	if msg.BridgeId == 0 {
 		return ErrInvalidBridgeId
 	}
+
+	dupCheckMap := make(map[string]bool)
 	for _, challenger := range msg.NewChallengers {
 		_, err := accAddressCodec.StringToBytes(challenger)
 		if err != nil {
 			return err
 		}
+
+		if _, found := dupCheckMap[challenger]; found {
+			return ErrInvalidChallengerUpdate.Wrap("duplicate challenger")
+		}
+
+		dupCheckMap[challenger] = true
+	}
+
+	if len(msg.NewChallengers) == 0 {
+		return ErrInvalidChallengerUpdate.Wrap("at least one new challenger is required")
 	}
 
 	return nil
diff --git a/x/ophost/types/tx.pb.go b/x/ophost/types/tx.pb.go
index 3fa2fee2..9df0390d 100644
--- a/x/ophost/types/tx.pb.go
+++ b/x/ophost/types/tx.pb.go
@@ -595,27 +595,28 @@ func (m *MsgUpdateProposerResponse) XXX_DiscardUnknown() {
 var xxx_messageInfo_MsgUpdateProposerResponse proto.InternalMessageInfo
 
 // MsgUpdateChallenger is a message to change a challenger
-type MsgUpdateChallenger struct {
+type MsgUpdateChallengers struct {
 	// authority is the address that controls the module (defaults to x/gov unless overwritten)
-	// or the current challenger address.(supports a single challenger that can replace the existing challenger,
-	// excluding their own address)
+	// or the current challenger address.
+	//
+	// If the given authority is a challenger address, it has the ability to replace itself with another address.
 	Authority      string   `protobuf:"bytes,1,opt,name=authority,proto3" json:"authority,omitempty" yaml:"authority"`
 	BridgeId       uint64   `protobuf:"varint,2,opt,name=bridge_id,json=bridgeId,proto3" json:"bridge_id,omitempty" yaml:"bridge_id"`
 	NewChallengers []string `protobuf:"bytes,3,rep,name=new_challengers,json=newChallengers,proto3" json:"new_challengers,omitempty" yaml:"new_challengers"`
 }
 
-func (m *MsgUpdateChallenger) Reset()         { *m = MsgUpdateChallenger{} }
-func (m *MsgUpdateChallenger) String() string { return proto.CompactTextString(m) }
-func (*MsgUpdateChallenger) ProtoMessage()    {}
-func (*MsgUpdateChallenger) Descriptor() ([]byte, []int) {
+func (m *MsgUpdateChallengers) Reset()         { *m = MsgUpdateChallengers{} }
+func (m *MsgUpdateChallengers) String() string { return proto.CompactTextString(m) }
+func (*MsgUpdateChallengers) ProtoMessage()    {}
+func (*MsgUpdateChallengers) Descriptor() ([]byte, []int) {
 	return fileDescriptor_d16af6eaf4088d05, []int{14}
 }
-func (m *MsgUpdateChallenger) XXX_Unmarshal(b []byte) error {
+func (m *MsgUpdateChallengers) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
 }
-func (m *MsgUpdateChallenger) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+func (m *MsgUpdateChallengers) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
 	if deterministic {
-		return xxx_messageInfo_MsgUpdateChallenger.Marshal(b, m, deterministic)
+		return xxx_messageInfo_MsgUpdateChallengers.Marshal(b, m, deterministic)
 	} else {
 		b = b[:cap(b)]
 		n, err := m.MarshalToSizedBuffer(b)
@@ -625,38 +626,38 @@ func (m *MsgUpdateChallenger) XXX_Marshal(b []byte, deterministic bool) ([]byte,
 		return b[:n], nil
 	}
 }
-func (m *MsgUpdateChallenger) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_MsgUpdateChallenger.Merge(m, src)
+func (m *MsgUpdateChallengers) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MsgUpdateChallengers.Merge(m, src)
 }
-func (m *MsgUpdateChallenger) XXX_Size() int {
+func (m *MsgUpdateChallengers) XXX_Size() int {
 	return m.Size()
 }
-func (m *MsgUpdateChallenger) XXX_DiscardUnknown() {
-	xxx_messageInfo_MsgUpdateChallenger.DiscardUnknown(m)
+func (m *MsgUpdateChallengers) XXX_DiscardUnknown() {
+	xxx_messageInfo_MsgUpdateChallengers.DiscardUnknown(m)
 }
 
-var xxx_messageInfo_MsgUpdateChallenger proto.InternalMessageInfo
+var xxx_messageInfo_MsgUpdateChallengers proto.InternalMessageInfo
 
-// MsgUpdateChallengerResponse returns a message handle result.
-type MsgUpdateChallengerResponse struct {
+// MsgUpdateChallengersResponse returns a message handle result.
+type MsgUpdateChallengersResponse struct {
 	// last finalized output index
 	OutputIndex uint64 `protobuf:"varint,1,opt,name=output_index,json=outputIndex,proto3" json:"output_index,omitempty"`
 	// last finalized l2 block number
 	L2BlockNumber uint64 `protobuf:"varint,2,opt,name=l2_block_number,json=l2BlockNumber,proto3" json:"l2_block_number,omitempty"`
 }
 
-func (m *MsgUpdateChallengerResponse) Reset()         { *m = MsgUpdateChallengerResponse{} }
-func (m *MsgUpdateChallengerResponse) String() string { return proto.CompactTextString(m) }
-func (*MsgUpdateChallengerResponse) ProtoMessage()    {}
-func (*MsgUpdateChallengerResponse) Descriptor() ([]byte, []int) {
+func (m *MsgUpdateChallengersResponse) Reset()         { *m = MsgUpdateChallengersResponse{} }
+func (m *MsgUpdateChallengersResponse) String() string { return proto.CompactTextString(m) }
+func (*MsgUpdateChallengersResponse) ProtoMessage()    {}
+func (*MsgUpdateChallengersResponse) Descriptor() ([]byte, []int) {
 	return fileDescriptor_d16af6eaf4088d05, []int{15}
 }
-func (m *MsgUpdateChallengerResponse) XXX_Unmarshal(b []byte) error {
+func (m *MsgUpdateChallengersResponse) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
 }
-func (m *MsgUpdateChallengerResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+func (m *MsgUpdateChallengersResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
 	if deterministic {
-		return xxx_messageInfo_MsgUpdateChallengerResponse.Marshal(b, m, deterministic)
+		return xxx_messageInfo_MsgUpdateChallengersResponse.Marshal(b, m, deterministic)
 	} else {
 		b = b[:cap(b)]
 		n, err := m.MarshalToSizedBuffer(b)
@@ -666,17 +667,17 @@ func (m *MsgUpdateChallengerResponse) XXX_Marshal(b []byte, deterministic bool)
 		return b[:n], nil
 	}
 }
-func (m *MsgUpdateChallengerResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_MsgUpdateChallengerResponse.Merge(m, src)
+func (m *MsgUpdateChallengersResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MsgUpdateChallengersResponse.Merge(m, src)
 }
-func (m *MsgUpdateChallengerResponse) XXX_Size() int {
+func (m *MsgUpdateChallengersResponse) XXX_Size() int {
 	return m.Size()
 }
-func (m *MsgUpdateChallengerResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_MsgUpdateChallengerResponse.DiscardUnknown(m)
+func (m *MsgUpdateChallengersResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_MsgUpdateChallengersResponse.DiscardUnknown(m)
 }
 
-var xxx_messageInfo_MsgUpdateChallengerResponse proto.InternalMessageInfo
+var xxx_messageInfo_MsgUpdateChallengersResponse proto.InternalMessageInfo
 
 // MsgUpdateBatchInfo is a message to change a batch info
 type MsgUpdateBatchInfo struct {
@@ -764,8 +765,10 @@ var xxx_messageInfo_MsgUpdateBatchInfoResponse proto.InternalMessageInfo
 // MsgUpdateMetadata is a message to change metadata
 type MsgUpdateMetadata struct {
 	// authority is the address that controls the module (defaults to x/gov unless overwritten)
-	// or the current challenger address.(supports a single challenger that can replace the existing challenger,
-	// excluding their own address))
+	// or the current challenger address.
+	//
+	// If the given authority is a challenger address, it has the ability to replace oneself to another address or remove
+	// oneself.
 	Authority string `protobuf:"bytes,1,opt,name=authority,proto3" json:"authority,omitempty" yaml:"authority"`
 	BridgeId  uint64 `protobuf:"varint,2,opt,name=bridge_id,json=bridgeId,proto3" json:"bridge_id,omitempty" yaml:"bridge_id"`
 	Metadata  []byte `protobuf:"bytes,3,opt,name=metadata,proto3" json:"metadata,omitempty" yaml:"metadata"`
@@ -939,8 +942,8 @@ func init() {
 	proto.RegisterType((*MsgFinalizeTokenWithdrawalResponse)(nil), "opinit.ophost.v1.MsgFinalizeTokenWithdrawalResponse")
 	proto.RegisterType((*MsgUpdateProposer)(nil), "opinit.ophost.v1.MsgUpdateProposer")
 	proto.RegisterType((*MsgUpdateProposerResponse)(nil), "opinit.ophost.v1.MsgUpdateProposerResponse")
-	proto.RegisterType((*MsgUpdateChallenger)(nil), "opinit.ophost.v1.MsgUpdateChallenger")
-	proto.RegisterType((*MsgUpdateChallengerResponse)(nil), "opinit.ophost.v1.MsgUpdateChallengerResponse")
+	proto.RegisterType((*MsgUpdateChallengers)(nil), "opinit.ophost.v1.MsgUpdateChallengers")
+	proto.RegisterType((*MsgUpdateChallengersResponse)(nil), "opinit.ophost.v1.MsgUpdateChallengersResponse")
 	proto.RegisterType((*MsgUpdateBatchInfo)(nil), "opinit.ophost.v1.MsgUpdateBatchInfo")
 	proto.RegisterType((*MsgUpdateBatchInfoResponse)(nil), "opinit.ophost.v1.MsgUpdateBatchInfoResponse")
 	proto.RegisterType((*MsgUpdateMetadata)(nil), "opinit.ophost.v1.MsgUpdateMetadata")
@@ -952,108 +955,108 @@ func init() {
 func init() { proto.RegisterFile("opinit/ophost/v1/tx.proto", fileDescriptor_d16af6eaf4088d05) }
 
 var fileDescriptor_d16af6eaf4088d05 = []byte{
-	// 1607 bytes of a gzipped FileDescriptorProto
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+	0xc3, 0xe8, 0x6b, 0xaf, 0xc7, 0x44, 0xdd, 0x8f, 0x3d, 0xf9, 0x86, 0xbb, 0x1f, 0x85, 0x8c, 0x70,
+	0x7f, 0xd8, 0xdb, 0x49, 0xa3, 0x60, 0x7e, 0xe8, 0xbb, 0x69, 0xf8, 0x16, 0xc3, 0xa0, 0xfa, 0xc6,
+	0xb1, 0xa1, 0xea, 0xd4, 0x4f, 0xc0, 0xe2, 0xa8, 0x0b, 0xff, 0xfa, 0xd0, 0xdd, 0x46, 0xa0, 0xf5,
+	0xeb, 0x6f, 0x82, 0x56, 0xc7, 0xd7, 0xc0, 0x74, 0xe2, 0x62, 0xf5, 0x97, 0xa1, 0xfb, 0xc4, 0x41,
+	0xfa, 0x95, 0x63, 0x80, 0xd4, 0x19, 0x0f, 0xc1, 0xdc, 0xe0, 0xf5, 0xe1, 0xd2, 0x11, 0x3b, 0x44,
+	0x70, 0x7a, 0xf1, 0x78, 0x38, 0x75, 0x18, 0x02, 0x33, 0xc9, 0xd9, 0x78, 0xf1, 0x88, 0x2d, 0x14,
+	0x4a, 0x5f, 0x3f, 0x0e, 0x6a, 0x90, 0x37, 0xd5, 0xee, 0x8f, 0xe2, 0x2d, 0x00, 0x1d, 0xc9, 0xdb,
+	0x40, 0x1b, 0x7d, 0x00, 0xa6, 0x62, 0x7d, 0x6f, 0xe5, 0x28, 0xd2, 0x39, 0x64, 0x44, 0xb9, 0x0f,
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+	0xa4, 0x9f, 0x3d, 0x2f, 0xa4, 0x7f, 0x7a, 0x5e, 0x48, 0x7f, 0xf9, 0xa2, 0x90, 0x7a, 0xf6, 0xa2,
+	0x90, 0xfa, 0xf1, 0x45, 0x21, 0xf5, 0xc1, 0xba, 0xe3, 0xd2, 0x66, 0xb7, 0x56, 0xac, 0xe3, 0x76,
+	0xc9, 0xe5, 0x65, 0x7c, 0xb5, 0x65, 0xd7, 0x48, 0xe9, 0xfe, 0x0e, 0xff, 0xcd, 0xf4, 0x51, 0xf0,
+	0xab, 0x29, 0xff, 0xc9, 0xb4, 0x36, 0xc1, 0x7f, 0x33, 0xbd, 0xf6, 0x47, 0x00, 0x00, 0x00, 0xff,
+	0xff, 0xe0, 0xb1, 0xfd, 0x21, 0xfd, 0x15, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -1082,8 +1085,8 @@ type MsgClient interface {
 	FinalizeTokenWithdrawal(ctx context.Context, in *MsgFinalizeTokenWithdrawal, opts ...grpc.CallOption) (*MsgFinalizeTokenWithdrawalResponse, error)
 	// UpdateProposer defines a rpc handler method for MsgUpdateProposer.
 	UpdateProposer(ctx context.Context, in *MsgUpdateProposer, opts ...grpc.CallOption) (*MsgUpdateProposerResponse, error)
-	// UpdateChallenger defines a rpc handler method for MsgUpdateChallenger.
-	UpdateChallenger(ctx context.Context, in *MsgUpdateChallenger, opts ...grpc.CallOption) (*MsgUpdateChallengerResponse, error)
+	// UpdateChallengers defines a rpc handler method for MsgUpdateChallengers.
+	UpdateChallengers(ctx context.Context, in *MsgUpdateChallengers, opts ...grpc.CallOption) (*MsgUpdateChallengersResponse, error)
 	// UpdateBatchInfo defines a rpc handler method for MsgUpdateBatchInfo.
 	UpdateBatchInfo(ctx context.Context, in *MsgUpdateBatchInfo, opts ...grpc.CallOption) (*MsgUpdateBatchInfoResponse, error)
 	// UpdateMetadata defines a rpc handler method for MsgUpdateMetadata.
@@ -1164,9 +1167,9 @@ func (c *msgClient) UpdateProposer(ctx context.Context, in *MsgUpdateProposer, o
 	return out, nil
 }
 
-func (c *msgClient) UpdateChallenger(ctx context.Context, in *MsgUpdateChallenger, opts ...grpc.CallOption) (*MsgUpdateChallengerResponse, error) {
-	out := new(MsgUpdateChallengerResponse)
-	err := c.cc.Invoke(ctx, "/opinit.ophost.v1.Msg/UpdateChallenger", in, out, opts...)
+func (c *msgClient) UpdateChallengers(ctx context.Context, in *MsgUpdateChallengers, opts ...grpc.CallOption) (*MsgUpdateChallengersResponse, error) {
+	out := new(MsgUpdateChallengersResponse)
+	err := c.cc.Invoke(ctx, "/opinit.ophost.v1.Msg/UpdateChallengers", in, out, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -1216,8 +1219,8 @@ type MsgServer interface {
 	FinalizeTokenWithdrawal(context.Context, *MsgFinalizeTokenWithdrawal) (*MsgFinalizeTokenWithdrawalResponse, error)
 	// UpdateProposer defines a rpc handler method for MsgUpdateProposer.
 	UpdateProposer(context.Context, *MsgUpdateProposer) (*MsgUpdateProposerResponse, error)
-	// UpdateChallenger defines a rpc handler method for MsgUpdateChallenger.
-	UpdateChallenger(context.Context, *MsgUpdateChallenger) (*MsgUpdateChallengerResponse, error)
+	// UpdateChallengers defines a rpc handler method for MsgUpdateChallengers.
+	UpdateChallengers(context.Context, *MsgUpdateChallengers) (*MsgUpdateChallengersResponse, error)
 	// UpdateBatchInfo defines a rpc handler method for MsgUpdateBatchInfo.
 	UpdateBatchInfo(context.Context, *MsgUpdateBatchInfo) (*MsgUpdateBatchInfoResponse, error)
 	// UpdateMetadata defines a rpc handler method for MsgUpdateMetadata.
@@ -1252,8 +1255,8 @@ func (*UnimplementedMsgServer) FinalizeTokenWithdrawal(ctx context.Context, req
 func (*UnimplementedMsgServer) UpdateProposer(ctx context.Context, req *MsgUpdateProposer) (*MsgUpdateProposerResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method UpdateProposer not implemented")
 }
-func (*UnimplementedMsgServer) UpdateChallenger(ctx context.Context, req *MsgUpdateChallenger) (*MsgUpdateChallengerResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method UpdateChallenger not implemented")
+func (*UnimplementedMsgServer) UpdateChallengers(ctx context.Context, req *MsgUpdateChallengers) (*MsgUpdateChallengersResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method UpdateChallengers not implemented")
 }
 func (*UnimplementedMsgServer) UpdateBatchInfo(ctx context.Context, req *MsgUpdateBatchInfo) (*MsgUpdateBatchInfoResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method UpdateBatchInfo not implemented")
@@ -1395,20 +1398,20 @@ func _Msg_UpdateProposer_Handler(srv interface{}, ctx context.Context, dec func(
 	return interceptor(ctx, in, info, handler)
 }
 
-func _Msg_UpdateChallenger_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(MsgUpdateChallenger)
+func _Msg_UpdateChallengers_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(MsgUpdateChallengers)
 	if err := dec(in); err != nil {
 		return nil, err
 	}
 	if interceptor == nil {
-		return srv.(MsgServer).UpdateChallenger(ctx, in)
+		return srv.(MsgServer).UpdateChallengers(ctx, in)
 	}
 	info := &grpc.UnaryServerInfo{
 		Server:     srv,
-		FullMethod: "/opinit.ophost.v1.Msg/UpdateChallenger",
+		FullMethod: "/opinit.ophost.v1.Msg/UpdateChallengers",
 	}
 	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(MsgServer).UpdateChallenger(ctx, req.(*MsgUpdateChallenger))
+		return srv.(MsgServer).UpdateChallengers(ctx, req.(*MsgUpdateChallengers))
 	}
 	return interceptor(ctx, in, info, handler)
 }
@@ -1500,8 +1503,8 @@ var _Msg_serviceDesc = grpc.ServiceDesc{
 			Handler:    _Msg_UpdateProposer_Handler,
 		},
 		{
-			MethodName: "UpdateChallenger",
-			Handler:    _Msg_UpdateChallenger_Handler,
+			MethodName: "UpdateChallengers",
+			Handler:    _Msg_UpdateChallengers_Handler,
 		},
 		{
 			MethodName: "UpdateBatchInfo",
@@ -2075,7 +2078,7 @@ func (m *MsgUpdateProposerResponse) MarshalToSizedBuffer(dAtA []byte) (int, erro
 	return len(dAtA) - i, nil
 }
 
-func (m *MsgUpdateChallenger) Marshal() (dAtA []byte, err error) {
+func (m *MsgUpdateChallengers) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
 	n, err := m.MarshalToSizedBuffer(dAtA[:size])
@@ -2085,12 +2088,12 @@ func (m *MsgUpdateChallenger) Marshal() (dAtA []byte, err error) {
 	return dAtA[:n], nil
 }
 
-func (m *MsgUpdateChallenger) MarshalTo(dAtA []byte) (int, error) {
+func (m *MsgUpdateChallengers) MarshalTo(dAtA []byte) (int, error) {
 	size := m.Size()
 	return m.MarshalToSizedBuffer(dAtA[:size])
 }
 
-func (m *MsgUpdateChallenger) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+func (m *MsgUpdateChallengers) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	i := len(dAtA)
 	_ = i
 	var l int
@@ -2119,7 +2122,7 @@ func (m *MsgUpdateChallenger) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
-func (m *MsgUpdateChallengerResponse) Marshal() (dAtA []byte, err error) {
+func (m *MsgUpdateChallengersResponse) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
 	n, err := m.MarshalToSizedBuffer(dAtA[:size])
@@ -2129,12 +2132,12 @@ func (m *MsgUpdateChallengerResponse) Marshal() (dAtA []byte, err error) {
 	return dAtA[:n], nil
 }
 
-func (m *MsgUpdateChallengerResponse) MarshalTo(dAtA []byte) (int, error) {
+func (m *MsgUpdateChallengersResponse) MarshalTo(dAtA []byte) (int, error) {
 	size := m.Size()
 	return m.MarshalToSizedBuffer(dAtA[:size])
 }
 
-func (m *MsgUpdateChallengerResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+func (m *MsgUpdateChallengersResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	i := len(dAtA)
 	_ = i
 	var l int
@@ -2632,7 +2635,7 @@ func (m *MsgUpdateProposerResponse) Size() (n int) {
 	return n
 }
 
-func (m *MsgUpdateChallenger) Size() (n int) {
+func (m *MsgUpdateChallengers) Size() (n int) {
 	if m == nil {
 		return 0
 	}
@@ -2654,7 +2657,7 @@ func (m *MsgUpdateChallenger) Size() (n int) {
 	return n
 }
 
-func (m *MsgUpdateChallengerResponse) Size() (n int) {
+func (m *MsgUpdateChallengersResponse) Size() (n int) {
 	if m == nil {
 		return 0
 	}
@@ -4443,7 +4446,7 @@ func (m *MsgUpdateProposerResponse) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
-func (m *MsgUpdateChallenger) Unmarshal(dAtA []byte) error {
+func (m *MsgUpdateChallengers) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
 	for iNdEx < l {
@@ -4466,10 +4469,10 @@ func (m *MsgUpdateChallenger) Unmarshal(dAtA []byte) error {
 		fieldNum := int32(wire >> 3)
 		wireType := int(wire & 0x7)
 		if wireType == 4 {
-			return fmt.Errorf("proto: MsgUpdateChallenger: wiretype end group for non-group")
+			return fmt.Errorf("proto: MsgUpdateChallengers: wiretype end group for non-group")
 		}
 		if fieldNum <= 0 {
-			return fmt.Errorf("proto: MsgUpdateChallenger: illegal tag %d (wire type %d)", fieldNum, wire)
+			return fmt.Errorf("proto: MsgUpdateChallengers: illegal tag %d (wire type %d)", fieldNum, wire)
 		}
 		switch fieldNum {
 		case 1:
@@ -4576,7 +4579,7 @@ func (m *MsgUpdateChallenger) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
-func (m *MsgUpdateChallengerResponse) Unmarshal(dAtA []byte) error {
+func (m *MsgUpdateChallengersResponse) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
 	for iNdEx < l {
@@ -4599,10 +4602,10 @@ func (m *MsgUpdateChallengerResponse) Unmarshal(dAtA []byte) error {
 		fieldNum := int32(wire >> 3)
 		wireType := int(wire & 0x7)
 		if wireType == 4 {
-			return fmt.Errorf("proto: MsgUpdateChallengerResponse: wiretype end group for non-group")
+			return fmt.Errorf("proto: MsgUpdateChallengersResponse: wiretype end group for non-group")
 		}
 		if fieldNum <= 0 {
-			return fmt.Errorf("proto: MsgUpdateChallengerResponse: illegal tag %d (wire type %d)", fieldNum, wire)
+			return fmt.Errorf("proto: MsgUpdateChallengersResponse: illegal tag %d (wire type %d)", fieldNum, wire)
 		}
 		switch fieldNum {
 		case 1:
diff --git a/x/ophost/types/types.pb.go b/x/ophost/types/types.pb.go
index be64fe13..b8baf0c3 100644
--- a/x/ophost/types/types.pb.go
+++ b/x/ophost/types/types.pb.go
@@ -249,7 +249,7 @@ var xxx_messageInfo_Output proto.InternalMessageInfo
 
 // BatchInfoWithOutput defines the batch information with output.
 type BatchInfoWithOutput struct {
-	BatchInfo BatchInfo `protobuf:"bytes,1,opt,name=batchInfo,proto3" json:"batchInfo"`
+	BatchInfo BatchInfo `protobuf:"bytes,1,opt,name=batch_info,json=batchInfo,proto3" json:"batch_info"`
 	Output    Output    `protobuf:"bytes,2,opt,name=output,proto3" json:"output"`
 }
 
@@ -299,55 +299,55 @@ func init() { proto.RegisterFile("opinit/ophost/v1/types.proto", fileDescriptor_
 
 var fileDescriptor_29cadbd84ee898dd = []byte{
 	// 776 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x54, 0x4d, 0x4f, 0xeb, 0x46,
-	0x14, 0x8d, 0x79, 0xbc, 0x3c, 0x32, 0x21, 0x7a, 0xaf, 0x86, 0x4a, 0x4e, 0x4a, 0xed, 0x28, 0x8b,
-	0x2a, 0x42, 0x60, 0xcb, 0x69, 0xbb, 0xa1, 0x8b, 0x0a, 0x43, 0x2b, 0xb1, 0x28, 0x44, 0x06, 0xa9,
-	0x52, 0xa5, 0x2a, 0x1a, 0xc7, 0x13, 0x67, 0x84, 0xed, 0xb1, 0x66, 0x26, 0x51, 0xa1, 0xff, 0xa0,
-	0x2b, 0x96, 0x2c, 0xe9, 0x0e, 0x75, 0xc5, 0xa2, 0xab, 0xfe, 0x02, 0x96, 0xa8, 0xab, 0xae, 0xa0,
-	0x0d, 0x0b, 0xaa, 0xfe, 0x8a, 0x6a, 0x3e, 0x12, 0x22, 0x40, 0x55, 0xdb, 0x4d, 0xe2, 0xb9, 0xf7,
-	0xdc, 0x7b, 0xce, 0x9c, 0x7b, 0x35, 0x60, 0x8d, 0x14, 0x38, 0xc7, 0xdc, 0x23, 0xc5, 0x90, 0x30,
-	0xee, 0x8d, 0x7d, 0x8f, 0x9f, 0x14, 0x88, 0xb9, 0x05, 0x25, 0x9c, 0x98, 0xef, 0x54, 0xd6, 0x55,
-	0x59, 0x77, 0xec, 0x37, 0xde, 0x83, 0x19, 0xce, 0x89, 0x27, 0x7f, 0x15, 0xa8, 0x61, 0xf7, 0x09,
-	0xcb, 0x08, 0xf3, 0x22, 0xc8, 0x90, 0x37, 0xf6, 0x23, 0xc4, 0xa1, 0xef, 0xf5, 0x09, 0xce, 0x75,
-	0xbe, 0xae, 0xf2, 0x3d, 0x79, 0xf2, 0xd4, 0x41, 0xa7, 0x56, 0x13, 0x92, 0x10, 0x15, 0x17, 0x5f,
-	0x3a, 0xea, 0x24, 0x84, 0x24, 0x29, 0xf2, 0xe4, 0x29, 0x1a, 0x0d, 0x3c, 0x8e, 0x33, 0xc4, 0x38,
-	0xcc, 0x8a, 0x29, 0xe3, 0x53, 0x40, 0x3c, 0xa2, 0x90, 0x63, 0xa2, 0x19, 0x5b, 0x3f, 0x1a, 0xa0,
-	0xdc, 0x85, 0x14, 0x66, 0xcc, 0xfc, 0x1e, 0xbc, 0xa3, 0x28, 0xc1, 0x8c, 0x2b, 0x40, 0x6f, 0x80,
-	0x90, 0x65, 0x34, 0x5f, 0xb5, 0xab, 0x9d, 0xba, 0xab, 0xa5, 0x08, 0xdd, 0xae, 0xd6, 0xed, 0xee,
-	0x10, 0x9c, 0x07, 0x9f, 0x5e, 0xdf, 0x3a, 0xa5, 0x9f, 0xee, 0x9c, 0x76, 0x82, 0xf9, 0x70, 0x14,
-	0xb9, 0x7d, 0x92, 0x69, 0xdd, 0xfa, 0x6f, 0x93, 0xc5, 0xc7, 0xda, 0x28, 0x51, 0xc0, 0x2e, 0x1f,
-	0xae, 0xd6, 0x8d, 0xf0, 0xed, 0x3c, 0xd3, 0x97, 0x08, 0x6d, 0x35, 0xce, 0x2f, 0x9c, 0xd2, 0x9f,
-	0x17, 0x8e, 0xf1, 0xc3, 0xc3, 0xd5, 0x7a, 0x4d, 0x5b, 0xac, 0x84, 0xb5, 0x7e, 0x59, 0x04, 0xcb,
-	0x01, 0xc5, 0x71, 0x82, 0x76, 0x48, 0x3e, 0xc0, 0x89, 0xb9, 0x05, 0xaa, 0xfd, 0x21, 0x4c, 0x53,
-	0x94, 0x27, 0x88, 0x32, 0x29, 0xb2, 0x12, 0x58, 0xbf, 0xfe, 0xbc, 0xb9, 0xaa, 0x75, 0x6e, 0xc7,
-	0x31, 0x45, 0x8c, 0x1d, 0x72, 0x8a, 0xf3, 0x24, 0x9c, 0x07, 0x9b, 0x9f, 0x80, 0xa5, 0x82, 0x92,
-	0x82, 0x30, 0x44, 0xad, 0x85, 0xa6, 0xf1, 0x8f, 0x85, 0x33, 0xa4, 0xf9, 0x05, 0x00, 0x11, 0xe4,
-	0xfd, 0x61, 0x0f, 0xe7, 0x03, 0x62, 0xbd, 0x6a, 0x1a, 0xed, 0x6a, 0xe7, 0x03, 0xf7, 0xe9, 0xc8,
-	0xdd, 0x40, 0x60, 0xf6, 0xf2, 0x01, 0x09, 0x2a, 0xc2, 0x17, 0x75, 0xd7, 0x4a, 0x34, 0x8d, 0x9a,
-	0xa7, 0x60, 0x85, 0x8d, 0xa2, 0x0c, 0x33, 0x26, 0x0c, 0xc6, 0x39, 0x47, 0x74, 0x0c, 0x53, 0x6b,
-	0x51, 0xf6, 0xab, 0xbb, 0x6a, 0x56, 0xee, 0x74, 0x56, 0xee, 0xae, 0x9e, 0x55, 0xe0, 0x8a, 0x6e,
-	0x7f, 0xdd, 0x3a, 0x1f, 0xbe, 0x50, 0xbd, 0x41, 0x32, 0xcc, 0x51, 0x56, 0xf0, 0x93, 0xf3, 0x3b,
-	0xc7, 0x50, 0x94, 0xe6, 0x23, 0x6e, 0x4f, 0xc3, 0x04, 0xf7, 0x00, 0xe7, 0x30, 0xc5, 0xa7, 0x6a,
-	0xbc, 0x05, 0xa2, 0x98, 0xc4, 0xd6, 0xeb, 0x7f, 0xcd, 0xfd, 0x42, 0xf5, 0x8b, 0xdc, 0xf3, 0xb8,
-	0xae, 0x84, 0x99, 0xdf, 0x82, 0xf7, 0xe7, 0x94, 0x33, 0x0e, 0x29, 0xef, 0x89, 0x4d, 0xb5, 0xca,
-	0x92, 0xbd, 0xf1, 0x8c, 0xfd, 0x68, 0xba, 0xc6, 0x41, 0x4d, 0xd0, 0x9f, 0xcd, 0xba, 0xcf, 0xf9,
-	0x77, 0x28, 0xda, 0x08, 0xa0, 0xd9, 0x00, 0x4b, 0x19, 0xe2, 0x30, 0x86, 0x1c, 0x5a, 0x6f, 0x9a,
-	0x46, 0x7b, 0x39, 0x9c, 0x9d, 0x5b, 0x9f, 0x83, 0xca, 0x6c, 0x2a, 0xe6, 0x1a, 0xa8, 0xc8, 0x7a,
-	0xce, 0x11, 0xb5, 0x0c, 0x31, 0xfd, 0xf0, 0x31, 0x60, 0xae, 0x82, 0xd7, 0xfd, 0x21, 0xc4, 0xb9,
-	0xda, 0x8b, 0x50, 0x1d, 0x5a, 0xdb, 0xa0, 0x72, 0x44, 0x8e, 0x51, 0xde, 0x85, 0x98, 0x9a, 0x75,
-	0xb0, 0x94, 0xfa, 0xbd, 0x18, 0xe5, 0x24, 0xd3, 0xf5, 0x6f, 0x52, 0x7f, 0x57, 0x1c, 0x65, 0xaa,
-	0xa3, 0x53, 0x0b, 0x3a, 0xd5, 0x91, 0xa9, 0xd6, 0x85, 0x01, 0xca, 0x07, 0x23, 0x5e, 0x8c, 0xb8,
-	0xe9, 0x80, 0x2a, 0x91, 0x5f, 0x3d, 0x4a, 0x08, 0x97, 0x3d, 0x96, 0x43, 0xa0, 0x42, 0x21, 0x21,
-	0xdc, 0xfc, 0x0a, 0xd4, 0x52, 0xbf, 0x17, 0xa5, 0xa4, 0x7f, 0xac, 0x2c, 0x5a, 0xf8, 0xaf, 0x16,
-	0x55, 0x53, 0x3f, 0x10, 0xe5, 0xd2, 0x9a, 0x8f, 0xc0, 0xdb, 0xb4, 0xa3, 0xdb, 0xe5, 0xa3, 0x2c,
-	0x42, 0x54, 0x6e, 0xef, 0x62, 0x58, 0x4b, 0x3b, 0x12, 0xb5, 0x2f, 0x83, 0xad, 0x73, 0x03, 0xac,
-	0xcc, 0x7c, 0xfa, 0x1a, 0xf3, 0xa1, 0xd6, 0xbb, 0x0b, 0x1e, 0xd7, 0x57, 0xaa, 0xfd, 0x5f, 0x7b,
-	0xff, 0x19, 0x28, 0xab, 0x2b, 0xea, 0xdb, 0x58, 0xcf, 0x5b, 0x28, 0xbe, 0xf9, 0x7a, 0x5d, 0x12,
-	0xec, 0x5f, 0xff, 0x61, 0x97, 0x2e, 0x27, 0xb6, 0x71, 0x3d, 0xb1, 0x8d, 0x9b, 0x89, 0x6d, 0xfc,
-	0x3e, 0xb1, 0x8d, 0xb3, 0x7b, 0xbb, 0x74, 0x73, 0x6f, 0x97, 0x7e, 0xbb, 0xb7, 0x4b, 0xdf, 0x6c,
-	0xcc, 0x3d, 0x3e, 0xa2, 0x2d, 0x86, 0x9b, 0x29, 0x8c, 0x98, 0x77, 0xd0, 0x95, 0x0f, 0xf6, 0x77,
-	0xd3, 0x27, 0x5b, 0x3e, 0x43, 0x51, 0x59, 0x5a, 0xf8, 0xf1, 0xdf, 0x01, 0x00, 0x00, 0xff, 0xff,
-	0xc4, 0x84, 0x37, 0x28, 0xd0, 0x05, 0x00, 0x00,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x54, 0x4f, 0x6f, 0xe3, 0x44,
+	0x14, 0xcf, 0x74, 0xbb, 0xd9, 0x66, 0xd2, 0x68, 0x17, 0x6f, 0x91, 0x9c, 0xb0, 0xd8, 0x51, 0x0e,
+	0x28, 0x5a, 0x6d, 0x6d, 0x39, 0xc0, 0x65, 0x39, 0xa0, 0xf5, 0x2e, 0x48, 0x7b, 0xa0, 0x8d, 0xdc,
+	0x4a, 0x48, 0x48, 0x28, 0x1a, 0xc7, 0x13, 0x67, 0x54, 0xdb, 0x63, 0xcd, 0x4c, 0x22, 0x5a, 0xbe,
+	0x01, 0xa7, 0x1e, 0xcb, 0xad, 0xdc, 0x2a, 0x4e, 0x3d, 0x70, 0xe2, 0x13, 0xf4, 0x58, 0x71, 0xe2,
+	0xd4, 0x42, 0x7a, 0x28, 0xe2, 0x53, 0xa0, 0xf9, 0x93, 0x34, 0xb4, 0x15, 0x02, 0x2e, 0x89, 0xdf,
+	0x7b, 0xbf, 0xf7, 0x7e, 0x6f, 0x7e, 0xef, 0xe9, 0xc1, 0x67, 0xb4, 0x24, 0x05, 0x11, 0x3e, 0x2d,
+	0xc7, 0x94, 0x0b, 0x7f, 0x1a, 0xf8, 0x62, 0xbf, 0xc4, 0xdc, 0x2b, 0x19, 0x15, 0xd4, 0x7a, 0xa2,
+	0xa3, 0x9e, 0x8e, 0x7a, 0xd3, 0xa0, 0xf5, 0x0e, 0xca, 0x49, 0x41, 0x7d, 0xf5, 0xab, 0x41, 0x2d,
+	0x67, 0x48, 0x79, 0x4e, 0xb9, 0x1f, 0x23, 0x8e, 0xfd, 0x69, 0x10, 0x63, 0x81, 0x02, 0x7f, 0x48,
+	0x49, 0x61, 0xe2, 0x4d, 0x1d, 0x1f, 0x28, 0xcb, 0xd7, 0x86, 0x09, 0x6d, 0xa4, 0x34, 0xa5, 0xda,
+	0x2f, 0xbf, 0x8c, 0xd7, 0x4d, 0x29, 0x4d, 0x33, 0xec, 0x2b, 0x2b, 0x9e, 0x8c, 0x7c, 0x41, 0x72,
+	0xcc, 0x05, 0xca, 0xcb, 0x39, 0xe3, 0x6d, 0x40, 0x32, 0x61, 0x48, 0x10, 0x6a, 0x18, 0x3b, 0x3f,
+	0x00, 0x58, 0xed, 0x23, 0x86, 0x72, 0x6e, 0x7d, 0x0b, 0x9f, 0x30, 0x9c, 0x12, 0x2e, 0x34, 0x60,
+	0x30, 0xc2, 0xd8, 0x06, 0xed, 0x07, 0xdd, 0x7a, 0xaf, 0xe9, 0x99, 0x56, 0x64, 0xdf, 0x9e, 0xe9,
+	0xdb, 0x7b, 0x4d, 0x49, 0x11, 0x7e, 0x7c, 0x76, 0xe1, 0x56, 0x7e, 0xbc, 0x74, 0xbb, 0x29, 0x11,
+	0xe3, 0x49, 0xec, 0x0d, 0x69, 0x6e, 0xfa, 0x36, 0x7f, 0x9b, 0x3c, 0xd9, 0x33, 0x42, 0xc9, 0x04,
+	0x7e, 0x72, 0x7d, 0xfa, 0x1c, 0x44, 0x8f, 0x97, 0x99, 0x3e, 0xc7, 0xf8, 0x65, 0xeb, 0xe8, 0xd8,
+	0xad, 0xfc, 0x71, 0xec, 0x82, 0xef, 0xae, 0x4f, 0x9f, 0x37, 0x8c, 0xc4, 0xba, 0xb1, 0xce, 0xcf,
+	0xab, 0x70, 0x3d, 0x64, 0x24, 0x49, 0xf1, 0x6b, 0x5a, 0x8c, 0x48, 0x6a, 0xbd, 0x84, 0xf5, 0xe1,
+	0x18, 0x65, 0x19, 0x2e, 0x52, 0xcc, 0xb8, 0x6a, 0xb2, 0x16, 0xda, 0xbf, 0xfc, 0xb4, 0xb9, 0x61,
+	0xfa, 0x7c, 0x95, 0x24, 0x0c, 0x73, 0xbe, 0x23, 0x18, 0x29, 0xd2, 0x68, 0x19, 0x6c, 0x7d, 0x04,
+	0xd7, 0x4a, 0x46, 0x4b, 0xca, 0x31, 0xb3, 0x57, 0xda, 0xe0, 0x1f, 0x13, 0x17, 0x48, 0xeb, 0x33,
+	0x08, 0x63, 0x24, 0x86, 0xe3, 0x01, 0x29, 0x46, 0xd4, 0x7e, 0xd0, 0x06, 0xdd, 0x7a, 0xef, 0x3d,
+	0xef, 0xf6, 0xc8, 0xbd, 0x50, 0x62, 0xde, 0x16, 0x23, 0x1a, 0xd6, 0xa4, 0x2e, 0xfa, 0xad, 0xb5,
+	0x78, 0xee, 0xb5, 0x0e, 0xe0, 0x53, 0x3e, 0x89, 0x73, 0xc2, 0xb9, 0x14, 0x98, 0x14, 0x02, 0xb3,
+	0x29, 0xca, 0xec, 0x55, 0x55, 0xaf, 0xe9, 0xe9, 0x59, 0x79, 0xf3, 0x59, 0x79, 0x6f, 0xcc, 0xac,
+	0x42, 0x4f, 0x56, 0xfb, 0xf3, 0xc2, 0x7d, 0xff, 0x9e, 0xec, 0x17, 0x34, 0x27, 0x02, 0xe7, 0xa5,
+	0xd8, 0x3f, 0xba, 0x74, 0x81, 0xa6, 0xb4, 0x6e, 0x70, 0x6f, 0x0d, 0x4c, 0x72, 0x8f, 0x48, 0x81,
+	0x32, 0x72, 0xa0, 0xc7, 0x5b, 0x62, 0x46, 0x68, 0x62, 0x3f, 0xfc, 0xd7, 0xdc, 0xf7, 0x64, 0xdf,
+	0xcb, 0xbd, 0x8c, 0xeb, 0x2b, 0x98, 0xf5, 0x35, 0x7c, 0x77, 0xa9, 0x73, 0x2e, 0x10, 0x13, 0x03,
+	0xb9, 0xa9, 0x76, 0x55, 0xb1, 0xb7, 0xee, 0xb0, 0xef, 0xce, 0xd7, 0x38, 0x6c, 0x48, 0xfa, 0xc3,
+	0x45, 0xf5, 0x25, 0xfd, 0x76, 0x64, 0x19, 0x09, 0xb4, 0x5a, 0x70, 0x2d, 0xc7, 0x02, 0x25, 0x48,
+	0x20, 0xfb, 0x51, 0x1b, 0x74, 0xd7, 0xa3, 0x85, 0xdd, 0xf9, 0x14, 0xd6, 0x16, 0x53, 0xb1, 0x9e,
+	0xc1, 0x9a, 0xca, 0x17, 0x02, 0x33, 0x1b, 0xc8, 0xe9, 0x47, 0x37, 0x0e, 0x6b, 0x03, 0x3e, 0x1c,
+	0x8e, 0x11, 0x29, 0xf4, 0x5e, 0x44, 0xda, 0xe8, 0xbc, 0x82, 0xb5, 0x5d, 0xba, 0x87, 0x8b, 0x3e,
+	0x22, 0xcc, 0x6a, 0xc2, 0xb5, 0x2c, 0x18, 0x24, 0xb8, 0xa0, 0xb9, 0xc9, 0x7f, 0x94, 0x05, 0x6f,
+	0xa4, 0xa9, 0x42, 0x3d, 0x13, 0x5a, 0x31, 0xa1, 0x9e, 0x0a, 0x75, 0x8e, 0x01, 0xac, 0x6e, 0x4f,
+	0x44, 0x39, 0x11, 0x96, 0x0b, 0xeb, 0x54, 0x7d, 0x0d, 0x18, 0xa5, 0x42, 0xd5, 0x58, 0x8f, 0xa0,
+	0x76, 0x45, 0x94, 0x0a, 0xeb, 0x0b, 0xd8, 0xc8, 0x82, 0x41, 0x9c, 0xd1, 0xe1, 0x9e, 0x96, 0x68,
+	0xe5, 0xbf, 0x4a, 0x54, 0xcf, 0x82, 0x50, 0xa6, 0x2b, 0x69, 0x3e, 0x80, 0x8f, 0xb3, 0x9e, 0x29,
+	0x57, 0x4c, 0xf2, 0x18, 0x33, 0xb5, 0xbd, 0xab, 0x51, 0x23, 0xeb, 0x29, 0xd4, 0x96, 0x72, 0x76,
+	0xbe, 0x07, 0xf0, 0xe9, 0x42, 0xa7, 0x2f, 0x89, 0x18, 0x9b, 0x7e, 0xff, 0xbe, 0xf8, 0xe0, 0xff,
+	0x2e, 0xfe, 0x27, 0xb0, 0xaa, 0xdf, 0x68, 0x9e, 0x63, 0xdf, 0x2d, 0xa1, 0x09, 0x97, 0xf3, 0x4d,
+	0x4a, 0xb8, 0x75, 0xf6, 0xbb, 0x53, 0x39, 0x99, 0x39, 0xe0, 0x6c, 0xe6, 0x80, 0xf3, 0x99, 0x03,
+	0x7e, 0x9b, 0x39, 0xe0, 0xf0, 0xca, 0xa9, 0x9c, 0x5f, 0x39, 0x95, 0x5f, 0xaf, 0x9c, 0xca, 0x57,
+	0x2f, 0x96, 0xae, 0x8f, 0x2c, 0x4b, 0xd0, 0x66, 0x86, 0x62, 0xee, 0x6f, 0xf7, 0xd5, 0xc5, 0xfe,
+	0x66, 0x7e, 0xb3, 0xd5, 0x1d, 0x8a, 0xab, 0x4a, 0xc3, 0x0f, 0xff, 0x0a, 0x00, 0x00, 0xff, 0xff,
+	0x97, 0x27, 0x99, 0xda, 0xd1, 0x05, 0x00, 0x00,
 }
 
 func (this *Params) Equal(that interface{}) bool {