diff --git a/kava/client.go b/kava/client.go
index 4fc2100..3e44af0 100644
--- a/kava/client.go
+++ b/kava/client.go
@@ -26,6 +26,10 @@ import (
 	"time"
 
 	"github.com/coinbase/rosetta-sdk-go/types"
+	abci "github.com/cometbft/cometbft/abci/types"
+	ctypes "github.com/cometbft/cometbft/rpc/core/types"
+	tmrpctypes "github.com/cometbft/cometbft/rpc/jsonrpc/types"
+	tmtypes "github.com/cometbft/cometbft/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 	authante "github.com/cosmos/cosmos-sdk/x/auth/ante"
@@ -34,10 +38,6 @@ import (
 	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
 	kava "github.com/kava-labs/kava/app"
 	"github.com/kava-labs/kava/app/params"
-	abci "github.com/cometbft/cometbft/abci/types"
-	ctypes "github.com/cometbft/cometbft/rpc/core/types"
-	tmrpctypes "github.com/cometbft/cometbft/rpc/jsonrpc/types"
-	tmtypes "github.com/cometbft/cometbft/types"
 )
 
 var noBlockResultsForHeight = regexp.MustCompile(`could not find results for height #(\d+)`)
@@ -53,6 +53,12 @@ type Client struct {
 func NewClient(rpc RPCClient, balanceServiceFactory BalanceServiceFactory) (*Client, error) {
 	encodingConfig := kava.MakeEncodingConfig()
 
+	encodingConfig.InterfaceRegistry.RegisterInterface(
+		"ibc.lightclients.solomachine.v2.ClientState",
+		(*ClientStateI)(nil),
+		&ClientState{},
+	)
+
 	return &Client{
 		rpc:            rpc,
 		encodingConfig: encodingConfig,
diff --git a/kava/custom_files.go b/kava/custom_files.go
new file mode 100644
index 0000000..f9a829e
--- /dev/null
+++ b/kava/custom_files.go
@@ -0,0 +1,44 @@
+package kava
+
+import (
+	"github.com/cosmos/cosmos-sdk/codec/types"
+	"github.com/gogo/protobuf/proto"
+)
+
+type ClientStateI interface {
+	proto.Message
+}
+
+// ClientState defines a solo machine client that tracks the current consensus
+// state and if the client is frozen.
+type ClientState struct {
+	// latest sequence of the client state
+	Sequence uint64 `protobuf:"varint,1,opt,name=sequence,proto3" json:"sequence,omitempty"`
+	// frozen sequence of the solo machine
+	IsFrozen       bool            `protobuf:"varint,2,opt,name=is_frozen,json=isFrozen,proto3" json:"is_frozen,omitempty" yaml:"is_frozen"`
+	ConsensusState *ConsensusState `protobuf:"bytes,3,opt,name=consensus_state,json=consensusState,proto3" json:"consensus_state,omitempty" yaml:"consensus_state"`
+	// when set to true, will allow governance to update a solo machine client.
+	// The client will be unfrozen if it is frozen.
+	AllowUpdateAfterProposal bool `protobuf:"varint,4,opt,name=allow_update_after_proposal,json=allowUpdateAfterProposal,proto3" json:"allow_update_after_proposal,omitempty" yaml:"allow_update_after_proposal"`
+}
+
+func (m *ClientState) Reset()         { *m = ClientState{} }
+func (m *ClientState) String() string { return proto.CompactTextString(m) }
+func (*ClientState) ProtoMessage()    {}
+
+// ConsensusState defines a solo machine consensus state. The sequence of a
+// consensus state is contained in the "height" key used in storing the
+// consensus state.
+type ConsensusState struct {
+	// public key of the solo machine
+	PublicKey *types.Any `protobuf:"bytes,1,opt,name=public_key,json=publicKey,proto3" json:"public_key,omitempty" yaml:"public_key"`
+	// diversifier allows the same public key to be re-used across different solo
+	// machine clients (potentially on different chains) without being considered
+	// misbehaviour.
+	Diversifier string `protobuf:"bytes,2,opt,name=diversifier,proto3" json:"diversifier,omitempty"`
+	Timestamp   uint64 `protobuf:"varint,3,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+}
+
+func (m *ConsensusState) Reset()         { *m = ConsensusState{} }
+func (m *ConsensusState) String() string { return proto.CompactTextString(m) }
+func (*ConsensusState) ProtoMessage()    {}