feat(auth): allow BaseAccounts to be migrated to x/accounts (#21820)

Co-authored-by: Akhil Kumar P <36399231+akhilkumarpilli@users.noreply.github.com>
2024-09-23 23:22:01 +02:00 · 2024-09-23 23:22:01 +02:00 · ebbaa0e92e
commit ebbaa0e92e
parent 0202d71f70
18 changed files with 2229 additions and 149 deletions
--- a/UPGRADING.md
+++ b/UPGRADING.md
@ -946,6 +946,55 @@ To find out more please read the [signer field](https://github.com/cosmos/cosmos

 For ante handler construction via `ante.NewAnteHandler`, the field `ante.HandlerOptions.SignModeHandler` has been updated to `x/tx/signing/HandlerMap` from `x/auth/signing/SignModeHandler`. Callers typically fetch this value from `client.TxConfig.SignModeHandler()` (which is also changed) so this change should be transparent to most users.

+##### Account Migration Guide: x/auth to x/accounts
+
+Users can now migrate accounts from `x/auth` to `x/accounts` using the `auth.MsgMigrateAccount` message. Currently, this migration is only supported for `BaseAccount` due to security considerations.
+
+###### Migration Process
+
+The migration process allows an auth BaseAccount to migrate to any kind of x/accounts supported account type, here we will show how to migrate from a legacy x/auth `BaseAccount` to a `x/accounts` `BaseAccount`
+
+####### Migrating to x/accounts/defaults/base
+
+To migrate to the `BaseAccount` in `x/accounts`, follow these steps:
+
+1. Send a `basev1.MsgInit` message.
+2. This process allows you to:
+    - Switch to a new public key
+    - Reset your sequence number
+
+> **Important**: If you intend to keep the same public key, ensure you use your current sequence number.
+
+###### Example: x/auth.MsgMigrateAccount
+
+Here's an example of the `x/auth.MsgMigrateAccount` message structure:
+
+```json
+{
+  "signer": "cosmos1w43tr39v3lzvxz969e4ty9a74rq9nw7563tqvy",
+  "account_type": "base",
+  "account_init_msg": {
+    "@type": "/cosmos.accounts.defaults.base.v1.MsgInit",
+    "pub_key": {
+      "@type": "/cosmos.crypto.secp256k1.PubKey",
+      "key": "AkeoE1z32tlQyE7xpx3v+JE9XJL0trVQBFoDCn0pGl3w"
+    },
+    "init_sequence": "100"
+  }
+}
+```
+
+**Field Descriptions**
+
+- `signer`: The address of the account you want to migrate from.
+- `account_type`: The new account type you want to migrate to (depends on what's installed on the chain).
+- `account_init_msg`: The custom initialization message for the new account.
+    - `@type`: Specifies the type of account (in this case, x/accounts base account).
+    - `pub_key`: The public key for the account. You can migrate to a different public key if desired.
+    - `init_sequence`: The new sequence number for the account.
+
+> **Warning**: If you're keeping the same public key, make sure to use your current sequence number to prevent potential replay attacks.
+
 #### `x/capability`

 Capability has been moved to [IBC Go](https://github.com/cosmos/ibc-go). IBC v8 will contain the necessary changes to incorporate the new module location.
--- a/api/cosmos/accounts/defaults/base/v1/base.pulsar.go
+++ b/api/cosmos/accounts/defaults/base/v1/base.pulsar.go
@ -14,14 +14,16 @@ import (
 )

 var (
-	md_MsgInit         protoreflect.MessageDescriptor
-	fd_MsgInit_pub_key protoreflect.FieldDescriptor
+	md_MsgInit               protoreflect.MessageDescriptor
+	fd_MsgInit_pub_key       protoreflect.FieldDescriptor
+	fd_MsgInit_init_sequence protoreflect.FieldDescriptor
 )

 func init() {
 	file_cosmos_accounts_defaults_base_v1_base_proto_init()
 	md_MsgInit = File_cosmos_accounts_defaults_base_v1_base_proto.Messages().ByName("MsgInit")
 	fd_MsgInit_pub_key = md_MsgInit.Fields().ByName("pub_key")
+	fd_MsgInit_init_sequence = md_MsgInit.Fields().ByName("init_sequence")
 }

 var _ protoreflect.Message = (*fastReflection_MsgInit)(nil)
@ -95,6 +97,12 @@ func (x *fastReflection_MsgInit) Range(f func(protoreflect.FieldDescriptor, prot
 			return
 		}
 	}
+	if x.InitSequence != uint64(0) {
+		value := protoreflect.ValueOfUint64(x.InitSequence)
+		if !f(fd_MsgInit_init_sequence, value) {
+			return
+		}
+	}
 }

 // Has reports whether a field is populated.
@ -112,6 +120,8 @@ func (x *fastReflection_MsgInit) Has(fd protoreflect.FieldDescriptor) bool {
 	switch fd.FullName() {
 	case "cosmos.accounts.defaults.base.v1.MsgInit.pub_key":
 		return x.PubKey != nil
+	case "cosmos.accounts.defaults.base.v1.MsgInit.init_sequence":
+		return x.InitSequence != uint64(0)
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.accounts.defaults.base.v1.MsgInit"))
@ -130,6 +140,8 @@ func (x *fastReflection_MsgInit) Clear(fd protoreflect.FieldDescriptor) {
 	switch fd.FullName() {
 	case "cosmos.accounts.defaults.base.v1.MsgInit.pub_key":
 		x.PubKey = nil
+	case "cosmos.accounts.defaults.base.v1.MsgInit.init_sequence":
+		x.InitSequence = uint64(0)
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.accounts.defaults.base.v1.MsgInit"))
@ -149,6 +161,9 @@ func (x *fastReflection_MsgInit) Get(descriptor protoreflect.FieldDescriptor) pr
 	case "cosmos.accounts.defaults.base.v1.MsgInit.pub_key":
 		value := x.PubKey
 		return protoreflect.ValueOfMessage(value.ProtoReflect())
+	case "cosmos.accounts.defaults.base.v1.MsgInit.init_sequence":
+		value := x.InitSequence
+		return protoreflect.ValueOfUint64(value)
 	default:
 		if descriptor.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.accounts.defaults.base.v1.MsgInit"))
@ -171,6 +186,8 @@ func (x *fastReflection_MsgInit) Set(fd protoreflect.FieldDescriptor, value prot
 	switch fd.FullName() {
 	case "cosmos.accounts.defaults.base.v1.MsgInit.pub_key":
 		x.PubKey = value.Message().Interface().(*anypb.Any)
+	case "cosmos.accounts.defaults.base.v1.MsgInit.init_sequence":
+		x.InitSequence = value.Uint()
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.accounts.defaults.base.v1.MsgInit"))
@ -196,6 +213,8 @@ func (x *fastReflection_MsgInit) Mutable(fd protoreflect.FieldDescriptor) protor
 			x.PubKey = new(anypb.Any)
 		}
 		return protoreflect.ValueOfMessage(x.PubKey.ProtoReflect())
+	case "cosmos.accounts.defaults.base.v1.MsgInit.init_sequence":
+		panic(fmt.Errorf("field init_sequence of message cosmos.accounts.defaults.base.v1.MsgInit is not mutable"))
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.accounts.defaults.base.v1.MsgInit"))
@ -212,6 +231,8 @@ func (x *fastReflection_MsgInit) NewField(fd protoreflect.FieldDescriptor) proto
 	case "cosmos.accounts.defaults.base.v1.MsgInit.pub_key":
 		m := new(anypb.Any)
 		return protoreflect.ValueOfMessage(m.ProtoReflect())
+	case "cosmos.accounts.defaults.base.v1.MsgInit.init_sequence":
+		return protoreflect.ValueOfUint64(uint64(0))
 	default:
 		if fd.IsExtension() {
 			panic(fmt.Errorf("proto3 declared messages do not support extensions: cosmos.accounts.defaults.base.v1.MsgInit"))
@ -285,6 +306,9 @@ func (x *fastReflection_MsgInit) ProtoMethods() *protoiface.Methods {
 			l = options.Size(x.PubKey)
 			n += 1 + l + runtime.Sov(uint64(l))
 		}
+		if x.InitSequence != 0 {
+			n += 1 + runtime.Sov(uint64(x.InitSequence))
+		}
 		if x.unknownFields != nil {
 			n += len(x.unknownFields)
 		}
@ -314,6 +338,11 @@ func (x *fastReflection_MsgInit) ProtoMethods() *protoiface.Methods {
 			i -= len(x.unknownFields)
 			copy(dAtA[i:], x.unknownFields)
 		}
+		if x.InitSequence != 0 {
+			i = runtime.EncodeVarint(dAtA, i, uint64(x.InitSequence))
+			i--
+			dAtA[i] = 0x10
+		}
 		if x.PubKey != nil {
 			encoded, err := options.Marshal(x.PubKey)
 			if err != nil {
@ -413,6 +442,25 @@ func (x *fastReflection_MsgInit) ProtoMethods() *protoiface.Methods {
 					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, err
 				}
 				iNdEx = postIndex
+			case 2:
+				if wireType != 0 {
+					return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, fmt.Errorf("proto: wrong wireType = %d for field InitSequence", wireType)
+				}
+				x.InitSequence = 0
+				for shift := uint(0); ; shift += 7 {
+					if shift >= 64 {
+						return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, runtime.ErrIntOverflow
+					}
+					if iNdEx >= l {
+						return protoiface.UnmarshalOutput{NoUnkeyedLiterals: input.NoUnkeyedLiterals, Flags: input.Flags}, io.ErrUnexpectedEOF
+					}
+					b := dAtA[iNdEx]
+					iNdEx++
+					x.InitSequence |= uint64(b&0x7F) << shift
+					if b < 0x80 {
+						break
+					}
+				}
 			default:
 				iNdEx = preIndex
 				skippy, err := runtime.Skip(dAtA[iNdEx:])
@ -3167,6 +3215,9 @@ type MsgInit struct {

 	// pub_key defines a pubkey for the account arbitrary encapsulated.
 	PubKey *anypb.Any `protobuf:"bytes,1,opt,name=pub_key,json=pubKey,proto3" json:"pub_key,omitempty"`
+	// init_sequence defines the initial sequence of the account.
+	// Defaults to zero if not set.
+	InitSequence uint64 `protobuf:"varint,2,opt,name=init_sequence,json=initSequence,proto3" json:"init_sequence,omitempty"`
 }

 func (x *MsgInit) Reset() {
@ -3196,6 +3247,13 @@ func (x *MsgInit) GetPubKey() *anypb.Any {
 	return nil
 }

+func (x *MsgInit) GetInitSequence() uint64 {
+	if x != nil {
+		return x.InitSequence
+	}
+	return 0
+}
+
 // MsgInitResponse is the response returned after base account initialization.
 // This is empty.
 type MsgInitResponse struct {
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+	0x06, 0x70, 0x75, 0x62, 0x4b, 0x65, 0x79, 0x42, 0x90, 0x02, 0x0a, 0x24, 0x63, 0x6f, 0x6d, 0x2e,
+	0x63, 0x6f, 0x73, 0x6d, 0x6f, 0x73, 0x2e, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x73, 0x2e,
+	0x64, 0x65, 0x66, 0x61, 0x75, 0x6c, 0x74, 0x73, 0x2e, 0x62, 0x61, 0x73, 0x65, 0x2e, 0x76, 0x31,
+	0x42, 0x09, 0x42, 0x61, 0x73, 0x65, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x50, 0x01, 0x5a, 0x38, 0x63,
+	0x6f, 0x73, 0x6d, 0x6f, 0x73, 0x73, 0x64, 0x6b, 0x2e, 0x69, 0x6f, 0x2f, 0x61, 0x70, 0x69, 0x2f,
+	0x63, 0x6f, 0x73, 0x6d, 0x6f, 0x73, 0x2f, 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x73, 0x2f,
+	0x64, 0x65, 0x66, 0x61, 0x75, 0x6c, 0x74, 0x73, 0x2f, 0x62, 0x61, 0x73, 0x65, 0x2f, 0x76, 0x31,
+	0x3b, 0x62, 0x61, 0x73, 0x65, 0x76, 0x31, 0xa2, 0x02, 0x04, 0x43, 0x41, 0x44, 0x42, 0xaa, 0x02,
+	0x20, 0x43, 0x6f, 0x73, 0x6d, 0x6f, 0x73, 0x2e, 0x41, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x73,
+	0x2e, 0x44, 0x65, 0x66, 0x61, 0x75, 0x6c, 0x74, 0x73, 0x2e, 0x42, 0x61, 0x73, 0x65, 0x2e, 0x56,
+	0x31, 0xca, 0x02, 0x20, 0x43, 0x6f, 0x73, 0x6d, 0x6f, 0x73, 0x5c, 0x41, 0x63, 0x63, 0x6f, 0x75,
+	0x6e, 0x74, 0x73, 0x5c, 0x44, 0x65, 0x66, 0x61, 0x75, 0x6c, 0x74, 0x73, 0x5c, 0x42, 0x61, 0x73,
+	0x65, 0x5c, 0x56, 0x31, 0xe2, 0x02, 0x2c, 0x43, 0x6f, 0x73, 0x6d, 0x6f, 0x73, 0x5c, 0x41, 0x63,
+	0x63, 0x6f, 0x75, 0x6e, 0x74, 0x73, 0x5c, 0x44, 0x65, 0x66, 0x61, 0x75, 0x6c, 0x74, 0x73, 0x5c,
+	0x42, 0x61, 0x73, 0x65, 0x5c, 0x56, 0x31, 0x5c, 0x47, 0x50, 0x42, 0x4d, 0x65, 0x74, 0x61, 0x64,
+	0x61, 0x74, 0x61, 0xea, 0x02, 0x24, 0x43, 0x6f, 0x73, 0x6d, 0x6f, 0x73, 0x3a, 0x3a, 0x41, 0x63,
+	0x63, 0x6f, 0x75, 0x6e, 0x74, 0x73, 0x3a, 0x3a, 0x44, 0x65, 0x66, 0x61, 0x75, 0x6c, 0x74, 0x73,
+	0x3a, 0x3a, 0x42, 0x61, 0x73, 0x65, 0x3a, 0x3a, 0x56, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x33,
 }

 var (
--- a/api/cosmos/auth/v1beta1/accounts.pulsar.go
+++ b/api/cosmos/auth/v1beta1/accounts.pulsar.go
@ -937,7 +937,7 @@ type QueryLegacyAccountResponse struct {
 	// the type wrapped by the any does not need to comply with the
 	// sdk.AccountI interface.
 	Account *anypb.Any `protobuf:"bytes,1,opt,name=account,proto3" json:"account,omitempty"`
-	// info represents the account as a BaseAccount, this can return
+	// base represents the account as a BaseAccount, this can return
 	// nil if the account cannot be represented as a BaseAccount.
 	// This is used in the gRPC QueryAccountInfo method.
 	Base *BaseAccount `protobuf:"bytes,2,opt,name=base,proto3" json:"base,omitempty"`
--- a/api/cosmos/auth/v1beta1/tx.pulsar.go
+++ b/api/cosmos/auth/v1beta1/tx.pulsar.go
--- a/api/cosmos/auth/v1beta1/tx_grpc.pb.go
+++ b/api/cosmos/auth/v1beta1/tx_grpc.pb.go
@ -19,8 +19,9 @@ import (
 const _ = grpc.SupportPackageIsVersion9

 const (
-	Msg_UpdateParams_FullMethodName  = "/cosmos.auth.v1beta1.Msg/UpdateParams"
-	Msg_NonAtomicExec_FullMethodName = "/cosmos.auth.v1beta1.Msg/NonAtomicExec"
+	Msg_UpdateParams_FullMethodName   = "/cosmos.auth.v1beta1.Msg/UpdateParams"
+	Msg_NonAtomicExec_FullMethodName  = "/cosmos.auth.v1beta1.Msg/NonAtomicExec"
+	Msg_MigrateAccount_FullMethodName = "/cosmos.auth.v1beta1.Msg/MigrateAccount"
 )

 // MsgClient is the client API for Msg service.
@ -34,6 +35,8 @@ type MsgClient interface {
 	UpdateParams(ctx context.Context, in *MsgUpdateParams, opts ...grpc.CallOption) (*MsgUpdateParamsResponse, error)
 	// NonAtomicExec allows users to submit multiple messages for non-atomic execution.
 	NonAtomicExec(ctx context.Context, in *MsgNonAtomicExec, opts ...grpc.CallOption) (*MsgNonAtomicExecResponse, error)
+	// MigrateAccount migrates the account to x/accounts.
+	MigrateAccount(ctx context.Context, in *MsgMigrateAccount, opts ...grpc.CallOption) (*MsgMigrateAccountResponse, error)
 }

 type msgClient struct {
@ -64,6 +67,16 @@ func (c *msgClient) NonAtomicExec(ctx context.Context, in *MsgNonAtomicExec, opt
 	return out, nil
 }

+func (c *msgClient) MigrateAccount(ctx context.Context, in *MsgMigrateAccount, opts ...grpc.CallOption) (*MsgMigrateAccountResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(MsgMigrateAccountResponse)
+	err := c.cc.Invoke(ctx, Msg_MigrateAccount_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // MsgServer is the server API for Msg service.
 // All implementations must embed UnimplementedMsgServer
 // for forward compatibility.
@ -75,6 +88,8 @@ type MsgServer interface {
 	UpdateParams(context.Context, *MsgUpdateParams) (*MsgUpdateParamsResponse, error)
 	// NonAtomicExec allows users to submit multiple messages for non-atomic execution.
 	NonAtomicExec(context.Context, *MsgNonAtomicExec) (*MsgNonAtomicExecResponse, error)
+	// MigrateAccount migrates the account to x/accounts.
+	MigrateAccount(context.Context, *MsgMigrateAccount) (*MsgMigrateAccountResponse, error)
 	mustEmbedUnimplementedMsgServer()
 }

@ -91,6 +106,9 @@ func (UnimplementedMsgServer) UpdateParams(context.Context, *MsgUpdateParams) (*
 func (UnimplementedMsgServer) NonAtomicExec(context.Context, *MsgNonAtomicExec) (*MsgNonAtomicExecResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method NonAtomicExec not implemented")
 }
+func (UnimplementedMsgServer) MigrateAccount(context.Context, *MsgMigrateAccount) (*MsgMigrateAccountResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method MigrateAccount not implemented")
+}
 func (UnimplementedMsgServer) mustEmbedUnimplementedMsgServer() {}
 func (UnimplementedMsgServer) testEmbeddedByValue()             {}

@ -148,6 +166,24 @@ func _Msg_NonAtomicExec_Handler(srv interface{}, ctx context.Context, dec func(i
 	return interceptor(ctx, in, info, handler)
 }

+func _Msg_MigrateAccount_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(MsgMigrateAccount)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MsgServer).MigrateAccount(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Msg_MigrateAccount_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MsgServer).MigrateAccount(ctx, req.(*MsgMigrateAccount))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // Msg_ServiceDesc is the grpc.ServiceDesc for Msg service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@ -163,6 +199,10 @@ var Msg_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "NonAtomicExec",
 			Handler:    _Msg_NonAtomicExec_Handler,
 		},
+		{
+			MethodName: "MigrateAccount",
+			Handler:    _Msg_MigrateAccount_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "cosmos/auth/v1beta1/tx.proto",
--- a/proto/cosmos/auth/v1beta1/accounts.proto
+++ b/proto/cosmos/auth/v1beta1/accounts.proto
@ -20,7 +20,7 @@ message QueryLegacyAccountResponse {
  // the type wrapped by the any does not need to comply with the
  // sdk.AccountI interface.
  google.protobuf.Any account = 1;
-  // info represents the account as a BaseAccount, this can return
+  // base represents the account as a BaseAccount, this can return
  // nil if the account cannot be represented as a BaseAccount.
  // This is used in the gRPC QueryAccountInfo method.
  BaseAccount base = 2;
--- a/proto/cosmos/auth/v1beta1/tx.proto
+++ b/proto/cosmos/auth/v1beta1/tx.proto
@ -22,6 +22,9 @@ service Msg {

  // NonAtomicExec allows users to submit multiple messages for non-atomic execution.
  rpc NonAtomicExec(MsgNonAtomicExec) returns (MsgNonAtomicExecResponse);
+
+  // MigrateAccount migrates the account to x/accounts.
+  rpc MigrateAccount(MsgMigrateAccount) returns (MsgMigrateAccountResponse);
 }

 // MsgUpdateParams is the Msg/UpdateParams request type.
@ -64,3 +67,22 @@ message NonAtomicExecResult {
 message MsgNonAtomicExecResponse {
  repeated NonAtomicExecResult results = 1;
 }
+
+// MsgMigrateAccount defines a message which allows users to migrate from BaseAccount
+// to other x/accounts types.
+message MsgMigrateAccount {
+  option (amino.name)           = "cosmos-sdk/x/auth/MsgMigrateAccount";
+  option (cosmos.msg.v1.signer) = "signer";
+
+  string              signer           = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
+  string              account_type     = 2;
+  google.protobuf.Any account_init_msg = 3;
+}
+
+// MsgMigrateAccountResponse defines the response given when migrating to
+// an x/accounts account.
+message MsgMigrateAccountResponse {
+  // init_response defines the response returned by the x/account account
+  // initialization.
+  google.protobuf.Any init_response = 1;
+}
--- a/tests/integration/auth/keeper/migrate_x_accounts_test.go
+++ b/tests/integration/auth/keeper/migrate_x_accounts_test.go
@ -0,0 +1,100 @@
+package keeper_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	basev1 "cosmossdk.io/x/accounts/defaults/base/v1"
+
+	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
+	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
+	authkeeper "github.com/cosmos/cosmos-sdk/x/auth/keeper"
+	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
+)
+
+func TestMigrateToAccounts(t *testing.T) {
+	f := initFixture(t, nil)
+
+	// create a module account
+	modAcc := &authtypes.ModuleAccount{
+		BaseAccount: &authtypes.BaseAccount{
+			Address:       f.mustAddr([]byte("cookies")),
+			PubKey:        nil,
+			AccountNumber: 0,
+			Sequence:      0,
+		},
+		Name:        "cookies",
+		Permissions: nil,
+	}
+	updatedMod := f.authKeeper.NewAccount(f.ctx, modAcc)
+	f.authKeeper.SetAccount(f.ctx, updatedMod)
+
+	// create account
+	msgSrv := authkeeper.NewMsgServerImpl(f.authKeeper)
+	privKey := secp256k1.GenPrivKey()
+	addr := sdk.AccAddress(privKey.PubKey().Address())
+
+	acc := f.authKeeper.NewAccountWithAddress(f.ctx, addr)
+	require.NoError(t, acc.SetPubKey(privKey.PubKey()))
+	f.authKeeper.SetAccount(f.ctx, acc)
+
+	t.Run("account does not exist", func(t *testing.T) {
+		resp, err := msgSrv.MigrateAccount(f.ctx, &authtypes.MsgMigrateAccount{
+			Signer:         f.mustAddr([]byte("notexist")),
+			AccountType:    "base",
+			AccountInitMsg: nil,
+		})
+		require.Nil(t, resp)
+		require.ErrorIs(t, err, sdkerrors.ErrUnknownAddress)
+	})
+
+	t.Run("invalid account type", func(t *testing.T) {
+		resp, err := msgSrv.MigrateAccount(f.ctx, &authtypes.MsgMigrateAccount{
+			Signer:         f.mustAddr(updatedMod.GetAddress()),
+			AccountType:    "base",
+			AccountInitMsg: nil,
+		})
+		require.Nil(t, resp)
+		require.ErrorContains(t, err, "only BaseAccount can be migrated")
+	})
+
+	t.Run("success", func(t *testing.T) {
+		pk, err := codectypes.NewAnyWithValue(privKey.PubKey())
+		require.NoError(t, err)
+
+		migrateMsg := &basev1.MsgInit{
+			PubKey:       pk,
+			InitSequence: 100,
+		}
+
+		initMsgAny, err := codectypes.NewAnyWithValue(migrateMsg)
+		require.NoError(t, err)
+
+		resp, err := msgSrv.MigrateAccount(f.ctx, &authtypes.MsgMigrateAccount{
+			Signer:         f.mustAddr(addr),
+			AccountType:    "base",
+			AccountInitMsg: initMsgAny,
+		})
+		require.NoError(t, err)
+
+		// check response semantics.
+		require.Equal(t, resp.InitResponse.TypeUrl, "/cosmos.accounts.defaults.base.v1.MsgInitResponse")
+		require.NotNil(t, resp.InitResponse.Value)
+
+		// check the account was removed from x/auth and added to x/accounts
+		require.Nil(t, f.authKeeper.GetAccount(f.ctx, addr))
+		require.True(t, f.accountsKeeper.IsAccountsModuleAccount(f.ctx, addr))
+
+		// check the init information is correctly propagated.
+		seq, err := f.accountsKeeper.Query(f.ctx, addr, &basev1.QuerySequence{})
+		require.NoError(t, err)
+		require.Equal(t, migrateMsg.InitSequence, seq.(*basev1.QuerySequenceResponse).Sequence)
+
+		pkResp, err := f.accountsKeeper.Query(f.ctx, addr, &basev1.QueryPubKey{})
+		require.NoError(t, err)
+		require.Equal(t, migrateMsg.PubKey, pkResp.(*basev1.QueryPubKeyResponse).PubKey)
+	})
+}
--- a/x/accounts/defaults/base/account.go
+++ b/x/accounts/defaults/base/account.go
@ -70,6 +70,12 @@ type Account struct {
 }

 func (a Account) Init(ctx context.Context, msg *v1.MsgInit) (*v1.MsgInitResponse, error) {
+	if msg.InitSequence != 0 {
+		err := a.Sequence.Set(ctx, msg.InitSequence)
+		if err != nil {
+			return nil, err
+		}
+	}
 	return &v1.MsgInitResponse{}, a.savePubKey(ctx, msg.PubKey)
 }

@ -258,6 +264,18 @@ func (a Account) QuerySequence(ctx context.Context, _ *v1.QuerySequence) (*v1.Qu
 	return &v1.QuerySequenceResponse{Sequence: seq}, nil
 }

+func (a Account) QueryPubKey(ctx context.Context, _ *v1.QueryPubKey) (*v1.QueryPubKeyResponse, error) {
+	pubKey, err := a.loadPubKey(ctx)
+	if err != nil {
+		return nil, err
+	}
+	anyPubKey, err := codectypes.NewAnyWithValue(pubKey)
+	if err != nil {
+		return nil, err
+	}
+	return &v1.QueryPubKeyResponse{PubKey: anyPubKey}, nil
+}
+
 func (a Account) AuthRetroCompatibility(ctx context.Context, _ *authtypes.QueryLegacyAccount) (*authtypes.QueryLegacyAccountResponse, error) {
 	addr, err := a.addrCodec.BytesToString(accountstd.Whoami(ctx))
 	if err != nil {
@ -311,5 +329,6 @@ func (a Account) RegisterExecuteHandlers(builder *accountstd.ExecuteBuilder) {

 func (a Account) RegisterQueryHandlers(builder *accountstd.QueryBuilder) {
 	accountstd.RegisterQueryHandler(builder, a.QuerySequence)
+	accountstd.RegisterQueryHandler(builder, a.QueryPubKey)
 	accountstd.RegisterQueryHandler(builder, a.AuthRetroCompatibility)
 }
--- a/x/accounts/defaults/base/v1/base.pb.go
+++ b/x/accounts/defaults/base/v1/base.pb.go
@ -27,6 +27,9 @@ const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
 type MsgInit struct {
 	// pub_key defines a pubkey for the account arbitrary encapsulated.
 	PubKey *any.Any `protobuf:"bytes,1,opt,name=pub_key,json=pubKey,proto3" json:"pub_key,omitempty"`
+	// init_sequence defines the initial sequence of the account.
+	// Defaults to zero if not set.
+	InitSequence uint64 `protobuf:"varint,2,opt,name=init_sequence,json=initSequence,proto3" json:"init_sequence,omitempty"`
 }

 func (m *MsgInit) Reset()         { *m = MsgInit{} }
@ -69,6 +72,13 @@ func (m *MsgInit) GetPubKey() *any.Any {
 	return nil
 }

+func (m *MsgInit) GetInitSequence() uint64 {
+	if m != nil {
+		return m.InitSequence
+	}
+	return 0
+}
+
 // MsgInitResponse is the response returned after base account initialization.
 // This is empty.
 type MsgInitResponse struct {
@ -372,26 +382,28 @@ func init() {
 }

 var fileDescriptor_7c860870b5ed6dc2 = []byte{
-	// 303 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x91, 0xcf, 0x4a, 0xc3, 0x40,
-	0x10, 0xc6, 0x1b, 0x90, 0x56, 0xa7, 0x94, 0x62, 0xb4, 0xa8, 0x3d, 0x2c, 0x65, 0x4f, 0x05, 0x71,
-	0x97, 0x5a, 0x0f, 0x5e, 0x2d, 0x7a, 0x10, 0x29, 0x68, 0x7a, 0xf3, 0x52, 0x92, 0x74, 0x1a, 0x4a,
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-	0x17, 0xa9, 0xb8, 0xeb, 0xfb, 0x52, 0x8b, 0x48, 0xf1, 0x19, 0xce, 0x5d, 0xbd, 0x8a, 0x14, 0xf7,
-	0x5c, 0x85, 0x7c, 0x33, 0x30, 0x2f, 0x0b, 0xd7, 0x32, 0x92, 0x76, 0x2f, 0x87, 0x59, 0x09, 0xb3,
-	0x12, 0x66, 0x06, 0xda, 0x0c, 0xba, 0x67, 0x81, 0x94, 0xc1, 0x0a, 0xb9, 0xe1, 0x3d, 0x3d, 0xe7,
-	0xae, 0x48, 0x72, 0x99, 0x5e, 0x43, 0x63, 0xac, 0x82, 0x7b, 0xb1, 0x88, 0xec, 0x0b, 0x68, 0x84,
-	0xda, 0x9b, 0x2e, 0x31, 0x39, 0xb5, 0x7a, 0x56, 0xbf, 0x79, 0x79, 0xcc, 0x72, 0x8f, 0x95, 0x1e,
-	0xbb, 0x11, 0x89, 0x53, 0x0f, 0xb5, 0xf7, 0x80, 0x09, 0x3d, 0x84, 0x76, 0x61, 0x3a, 0xa8, 0x42,
-	0x29, 0x14, 0xd2, 0x3b, 0x68, 0x8d, 0x55, 0x30, 0x89, 0xdd, 0xf0, 0xd1, 0x30, 0xf6, 0x15, 0x34,
-	0x05, 0xc6, 0xd3, 0xbf, 0xc4, 0x1e, 0x08, 0x8c, 0x73, 0x8b, 0x9e, 0x40, 0x67, 0x27, 0xa6, 0xca,
-	0x6f, 0x43, 0xeb, 0x49, 0xe3, 0x3a, 0x99, 0xe0, 0xab, 0x46, 0xe1, 0x23, 0x1d, 0x42, 0x67, 0x67,
-	0x51, 0x92, 0x76, 0x17, 0xf6, 0x55, 0xb1, 0x33, 0x57, 0xf7, 0x9c, 0x6a, 0xa6, 0x2d, 0x68, 0x1a,
-	0xa9, 0xb8, 0x76, 0x0b, 0x47, 0x3f, 0xc6, 0x2a, 0xe1, 0x7f, 0xbf, 0x31, 0x1a, 0x7d, 0xa4, 0xc4,
-	0xda, 0xa6, 0xc4, 0xfa, 0x4a, 0x89, 0xf5, 0x9e, 0x91, 0xda, 0x36, 0x23, 0xb5, 0xcf, 0x8c, 0xd4,
-	0x9e, 0xfb, 0x79, 0x3d, 0x6a, 0xb6, 0x64, 0x0b, 0xc9, 0xdf, 0x7e, 0xef, 0xd4, 0xab, 0x9b, 0xe4,
-	0xe1, 0x77, 0x00, 0x00, 0x00, 0xff, 0xff, 0x8f, 0xe1, 0xb2, 0xd8, 0xfe, 0x01, 0x00, 0x00,
+	// 323 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x91, 0xc1, 0x4a, 0xf3, 0x40,
+	0x10, 0xc7, 0xbb, 0x1f, 0x1f, 0xad, 0x4e, 0x0d, 0xc5, 0x68, 0xb1, 0xf6, 0x10, 0x4a, 0xbc, 0x14,
+	0xc4, 0x5d, 0x6a, 0x7d, 0x01, 0x8b, 0x1e, 0x44, 0x0a, 0xda, 0xde, 0x04, 0x29, 0x49, 0x3a, 0x0d,
+	0xa1, 0x75, 0x37, 0x76, 0xb3, 0xad, 0x79, 0x0b, 0x1f, 0xcb, 0x63, 0x8f, 0x1e, 0xa5, 0x7d, 0x11,
+	0x71, 0x37, 0x09, 0xf6, 0x20, 0xe8, 0x69, 0x99, 0xe1, 0xf7, 0xff, 0xcd, 0xb0, 0x03, 0xa7, 0x81,
+	0x90, 0x4f, 0x42, 0x32, 0x2f, 0x08, 0x84, 0xe2, 0x89, 0x64, 0x63, 0x9c, 0x78, 0x6a, 0x96, 0x48,
+	0xe6, 0x7b, 0x12, 0xd9, 0xa2, 0xa3, 0x5f, 0x1a, 0xcf, 0x45, 0x22, 0xec, 0x96, 0x81, 0x69, 0x0e,
+	0xd3, 0x1c, 0xa6, 0x1a, 0x5a, 0x74, 0x9a, 0xc7, 0xa1, 0x10, 0xe1, 0x0c, 0x99, 0xe6, 0x7d, 0x35,
+	0x61, 0x1e, 0x4f, 0x4d, 0xd8, 0x7d, 0x84, 0x4a, 0x5f, 0x86, 0x37, 0x3c, 0x4a, 0xec, 0x33, 0xa8,
+	0xc4, 0xca, 0x1f, 0x4d, 0x31, 0x6d, 0x90, 0x16, 0x69, 0x57, 0xcf, 0x0f, 0xa9, 0xc9, 0xd1, 0x3c,
+	0x47, 0x2f, 0x79, 0x3a, 0x28, 0xc7, 0xca, 0xbf, 0xc5, 0xd4, 0x3e, 0x01, 0x2b, 0xe2, 0x51, 0x32,
+	0x92, 0xf8, 0xac, 0x90, 0x07, 0xd8, 0xf8, 0xd7, 0x22, 0xed, 0xff, 0x83, 0xbd, 0xaf, 0xe6, 0x30,
+	0xeb, 0xb9, 0xfb, 0x50, 0xcb, 0xf4, 0x03, 0x94, 0xb1, 0xe0, 0x12, 0xdd, 0x6b, 0xb0, 0xfa, 0x32,
+	0x1c, 0x2e, 0xbd, 0xf8, 0xce, 0x88, 0x2e, 0xa0, 0xca, 0x71, 0x39, 0xfa, 0xcd, 0xec, 0x5d, 0x8e,
+	0x4b, 0x93, 0x72, 0x8f, 0xa0, 0xbe, 0xa5, 0x29, 0xfc, 0x35, 0xb0, 0xee, 0x15, 0xce, 0xd3, 0x62,
+	0x87, 0x2e, 0xd4, 0xb7, 0x1a, 0x39, 0x69, 0x37, 0x61, 0xa7, 0x58, 0x9e, 0xe8, 0xe5, 0x8b, 0xda,
+	0xb5, 0xa0, 0xaa, 0x43, 0xd9, 0xb4, 0x2b, 0x38, 0xf8, 0x56, 0x16, 0x86, 0xbf, 0x7d, 0x59, 0xaf,
+	0xf7, 0xb6, 0x76, 0xc8, 0x6a, 0xed, 0x90, 0x8f, 0xb5, 0x43, 0x5e, 0x37, 0x4e, 0x69, 0xb5, 0x71,
+	0x4a, 0xef, 0x1b, 0xa7, 0xf4, 0xd0, 0x36, 0x37, 0x94, 0xe3, 0x29, 0x8d, 0x04, 0x7b, 0xf9, 0xf9,
+	0xf0, 0x7e, 0x59, 0x9b, 0xbb, 0x9f, 0x01, 0x00, 0x00, 0xff, 0xff, 0x30, 0xaf, 0x2e, 0x20, 0x23,
+	0x02, 0x00, 0x00,
 }

 func (m *MsgInit) Marshal() (dAtA []byte, err error) {
@ -414,6 +426,11 @@ func (m *MsgInit) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.InitSequence != 0 {
+		i = encodeVarintBase(dAtA, i, uint64(m.InitSequence))
+		i--
+		dAtA[i] = 0x10
+	}
 	if m.PubKey != nil {
 		{
 			size, err := m.PubKey.MarshalToSizedBuffer(dAtA[:i])
@ -640,6 +657,9 @@ func (m *MsgInit) Size() (n int) {
 		l = m.PubKey.Size()
 		n += 1 + l + sovBase(uint64(l))
 	}
+	if m.InitSequence != 0 {
+		n += 1 + sovBase(uint64(m.InitSequence))
+	}
 	return n
 }

@ -788,6 +808,25 @@ func (m *MsgInit) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 2:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field InitSequence", wireType)
+			}
+			m.InitSequence = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowBase
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.InitSequence |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
 		default:
 			iNdEx = preIndex
 			skippy, err := skipBase(dAtA[iNdEx:])
--- a/x/accounts/proto/cosmos/accounts/defaults/base/v1/base.proto
+++ b/x/accounts/proto/cosmos/accounts/defaults/base/v1/base.proto
@ -10,6 +10,9 @@ import "google/protobuf/any.proto";
 message MsgInit {
  // pub_key defines a pubkey for the account arbitrary encapsulated.
  google.protobuf.Any pub_key = 1;
+  // init_sequence defines the initial sequence of the account.
+  // Defaults to zero if not set.
+  uint64 init_sequence = 2;
 }

 // MsgInitResponse is the response returned after base account initialization.
--- a/x/auth/CHANGELOG.md
+++ b/x/auth/CHANGELOG.md
@ -61,7 +61,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * [#19093](https://github.com/cosmos/cosmos-sdk/pull/19093) SetPubKeyDecorator was merged into SigVerification, gas consumption is almost halved for a simple tx.
 * [#19535](https://github.com/cosmos/cosmos-sdk/pull/19535) Remove vesting account creation when the chain is running. The accounts module is required for creating [#vesting accounts](../accounts/defaults/lockup/README.md) on a running chain. 
 * [#21688](https://github.com/cosmos/cosmos-sdk/pull/21688) Allow x/accounts to be queriable from the `AccountInfo` and `Account` gRPC endpoints
-
+* [#21820](https://github.com/cosmos/cosmos-sdk/pull/21820) Allow x/auth `BaseAccount` to migrate to a `x/accounts` via the new `MsgMigrateAccount`. 
 ### Bug Fixes

 * [#19148](https://github.com/cosmos/cosmos-sdk/pull/19148) Checks the consumed gas for verifying a multisig pubKey signature during simulation.
--- a/x/auth/keeper/msg_server.go
+++ b/x/auth/keeper/msg_server.go
@ -4,7 +4,14 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"reflect"
+	"strings"

+	gogoproto "github.com/cosmos/gogoproto/proto"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+
+	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 	"github.com/cosmos/cosmos-sdk/x/auth/types"
 )
@ -68,3 +75,61 @@ func (ms msgServer) UpdateParams(ctx context.Context, msg *types.MsgUpdateParams

 	return &types.MsgUpdateParamsResponse{}, nil
 }
+
+func (ms msgServer) MigrateAccount(ctx context.Context, msg *types.MsgMigrateAccount) (*types.MsgMigrateAccountResponse, error) {
+	signer, err := ms.ak.AddressCodec().StringToBytes(msg.Signer)
+	if err != nil {
+		return nil, sdkerrors.ErrInvalidAddress.Wrapf("invalid signer address: %s", err)
+	}
+
+	acc := ms.ak.GetAccount(ctx, signer)
+	if acc == nil {
+		return nil, sdkerrors.ErrUnknownAddress.Wrapf("account %s does not exist", signer)
+	}
+
+	// check if account type is valid or not
+	_, isBaseAccount := (acc).(*types.BaseAccount)
+	if !isBaseAccount {
+		return nil, status.Error(codes.InvalidArgument, "only BaseAccount can be migrated")
+	}
+
+	// unwrap any msg
+	initMsg, err := unpackAnyRaw(msg.AccountInitMsg)
+	if err != nil {
+		return nil, err
+	}
+
+	initResp, err := ms.ak.AccountsModKeeper.MigrateLegacyAccount(ctx, signer, acc.GetAccountNumber(), msg.AccountType, initMsg)
+	if err != nil {
+		return nil, err
+	}
+
+	// account is then removed from state
+	ms.ak.RemoveAccount(ctx, acc)
+
+	initRespAny, err := codectypes.NewAnyWithValue(initResp)
+	if err != nil {
+		return nil, err
+	}
+
+	return &types.MsgMigrateAccountResponse{InitResponse: initRespAny}, nil
+}
+
+func unpackAnyRaw(m *codectypes.Any) (gogoproto.Message, error) {
+	if m == nil {
+		return nil, fmt.Errorf("cannot unpack nil any")
+	}
+	split := strings.Split(m.TypeUrl, "/")
+	name := split[len(split)-1]
+	typ := gogoproto.MessageType(name)
+	if typ == nil {
+		return nil, fmt.Errorf("no message type found for %s", name)
+	}
+	concreteMsg := reflect.New(typ.Elem()).Interface().(gogoproto.Message)
+	err := gogoproto.Unmarshal(m.Value, concreteMsg)
+	if err != nil {
+		return nil, err
+	}
+
+	return concreteMsg, nil
+}
--- a/x/auth/testutil/expected_keepers_mocks.go
+++ b/x/auth/testutil/expected_keepers_mocks.go
@ -134,6 +134,21 @@ func (mr *MockAccountsModKeeperMockRecorder) IsAccountsModuleAccount(ctx, accoun
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "IsAccountsModuleAccount", reflect.TypeOf((*MockAccountsModKeeper)(nil).IsAccountsModuleAccount), ctx, accountAddr)
 }

+// MigrateLegacyAccount mocks base method.
+func (m *MockAccountsModKeeper) MigrateLegacyAccount(ctx context.Context, addr []byte, accNum uint64, accType string, msg transaction.Msg) (transaction.Msg, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "MigrateLegacyAccount", ctx, addr, accNum, accType, msg)
+	ret0, _ := ret[0].(transaction.Msg)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// MigrateLegacyAccount indicates an expected call of MigrateLegacyAccount.
+func (mr *MockAccountsModKeeperMockRecorder) MigrateLegacyAccount(ctx, addr, accNum, accType, msg interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "MigrateLegacyAccount", reflect.TypeOf((*MockAccountsModKeeper)(nil).MigrateLegacyAccount), ctx, addr, accNum, accType, msg)
+}
+
 // NextAccountNumber mocks base method.
 func (m *MockAccountsModKeeper) NextAccountNumber(ctx context.Context) (uint64, error) {
 	m.ctrl.T.Helper()
--- a/x/auth/types/accounts.pb.go
+++ b/x/auth/types/accounts.pb.go
@ -70,7 +70,7 @@ type QueryLegacyAccountResponse struct {
 	// the type wrapped by the any does not need to comply with the
 	// sdk.AccountI interface.
 	Account *any.Any `protobuf:"bytes,1,opt,name=account,proto3" json:"account,omitempty"`
-	// info represents the account as a BaseAccount, this can return
+	// base represents the account as a BaseAccount, this can return
 	// nil if the account cannot be represented as a BaseAccount.
 	// This is used in the gRPC QueryAccountInfo method.
 	Base *BaseAccount `protobuf:"bytes,2,opt,name=base,proto3" json:"base,omitempty"`
--- a/x/auth/types/codec.go
+++ b/x/auth/types/codec.go
@ -59,5 +59,6 @@ func RegisterInterfaces(registrar registry.InterfaceRegistrar) {
 	registrar.RegisterImplementations((*coretransaction.Msg)(nil),
 		&MsgUpdateParams{},
 		&MsgNonAtomicExec{},
+		&MsgMigrateAccount{},
 	)
 }
--- a/x/auth/types/expected_keepers.go
+++ b/x/auth/types/expected_keepers.go
@ -31,4 +31,13 @@ type AccountsModKeeper interface {
 	// InitAccountNumberSeqUnsafe is use to set accounts module account number with value
 	// of auth module current account number
 	InitAccountNumberSeqUnsafe(ctx context.Context, currentAccNum uint64) error
+
+	// MigrateLegacyAccount migrates the given account to an x/accounts' account.
+	MigrateLegacyAccount(
+		ctx context.Context,
+		addr []byte, // The current address of the account
+		accNum uint64, // The current account number
+		accType string, // The account type to migrate to
+		msg transaction.Msg, // The init msg of the account type we're migrating to
+	) (transaction.Msg, error)
 }
--- a/x/auth/types/tx.pb.go
+++ b/x/auth/types/tx.pb.go
@ -279,53 +279,172 @@ func (m *MsgNonAtomicExecResponse) GetResults() []*NonAtomicExecResult {
 	return nil
 }

+// MsgMigrateAccount defines a message which allows users to migrate from BaseAccount
+// to other x/accounts types.
+type MsgMigrateAccount struct {
+	Signer         string   `protobuf:"bytes,1,opt,name=signer,proto3" json:"signer,omitempty"`
+	AccountType    string   `protobuf:"bytes,2,opt,name=account_type,json=accountType,proto3" json:"account_type,omitempty"`
+	AccountInitMsg *any.Any `protobuf:"bytes,3,opt,name=account_init_msg,json=accountInitMsg,proto3" json:"account_init_msg,omitempty"`
+}
+
+func (m *MsgMigrateAccount) Reset()         { *m = MsgMigrateAccount{} }
+func (m *MsgMigrateAccount) String() string { return proto.CompactTextString(m) }
+func (*MsgMigrateAccount) ProtoMessage()    {}
+func (*MsgMigrateAccount) Descriptor() ([]byte, []int) {
+	return fileDescriptor_c2d62bd9c4c212e5, []int{5}
+}
+func (m *MsgMigrateAccount) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *MsgMigrateAccount) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_MsgMigrateAccount.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *MsgMigrateAccount) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MsgMigrateAccount.Merge(m, src)
+}
+func (m *MsgMigrateAccount) XXX_Size() int {
+	return m.Size()
+}
+func (m *MsgMigrateAccount) XXX_DiscardUnknown() {
+	xxx_messageInfo_MsgMigrateAccount.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MsgMigrateAccount proto.InternalMessageInfo
+
+func (m *MsgMigrateAccount) GetSigner() string {
+	if m != nil {
+		return m.Signer
+	}
+	return ""
+}
+
+func (m *MsgMigrateAccount) GetAccountType() string {
+	if m != nil {
+		return m.AccountType
+	}
+	return ""
+}
+
+func (m *MsgMigrateAccount) GetAccountInitMsg() *any.Any {
+	if m != nil {
+		return m.AccountInitMsg
+	}
+	return nil
+}
+
+// MsgMigrateAccountResponse defines the response given when migrating to
+// an x/accounts account.
+type MsgMigrateAccountResponse struct {
+	// init_response defines the response returned by the x/account account
+	// initialization.
+	InitResponse *any.Any `protobuf:"bytes,1,opt,name=init_response,json=initResponse,proto3" json:"init_response,omitempty"`
+}
+
+func (m *MsgMigrateAccountResponse) Reset()         { *m = MsgMigrateAccountResponse{} }
+func (m *MsgMigrateAccountResponse) String() string { return proto.CompactTextString(m) }
+func (*MsgMigrateAccountResponse) ProtoMessage()    {}
+func (*MsgMigrateAccountResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_c2d62bd9c4c212e5, []int{6}
+}
+func (m *MsgMigrateAccountResponse) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *MsgMigrateAccountResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_MsgMigrateAccountResponse.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *MsgMigrateAccountResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MsgMigrateAccountResponse.Merge(m, src)
+}
+func (m *MsgMigrateAccountResponse) XXX_Size() int {
+	return m.Size()
+}
+func (m *MsgMigrateAccountResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_MsgMigrateAccountResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MsgMigrateAccountResponse proto.InternalMessageInfo
+
+func (m *MsgMigrateAccountResponse) GetInitResponse() *any.Any {
+	if m != nil {
+		return m.InitResponse
+	}
+	return nil
+}
+
 func init() {
 	proto.RegisterType((*MsgUpdateParams)(nil), "cosmos.auth.v1beta1.MsgUpdateParams")
 	proto.RegisterType((*MsgUpdateParamsResponse)(nil), "cosmos.auth.v1beta1.MsgUpdateParamsResponse")
 	proto.RegisterType((*MsgNonAtomicExec)(nil), "cosmos.auth.v1beta1.MsgNonAtomicExec")
 	proto.RegisterType((*NonAtomicExecResult)(nil), "cosmos.auth.v1beta1.NonAtomicExecResult")
 	proto.RegisterType((*MsgNonAtomicExecResponse)(nil), "cosmos.auth.v1beta1.MsgNonAtomicExecResponse")
+	proto.RegisterType((*MsgMigrateAccount)(nil), "cosmos.auth.v1beta1.MsgMigrateAccount")
+	proto.RegisterType((*MsgMigrateAccountResponse)(nil), "cosmos.auth.v1beta1.MsgMigrateAccountResponse")
 }

 func init() { proto.RegisterFile("cosmos/auth/v1beta1/tx.proto", fileDescriptor_c2d62bd9c4c212e5) }

 var fileDescriptor_c2d62bd9c4c212e5 = []byte{
-	// 548 bytes of a gzipped FileDescriptorProto
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-	0x5e, 0x04, 0x00, 0x00,
+	// 667 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x54, 0xcb, 0x6e, 0xd3, 0x40,
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+	0xc6, 0x7d, 0x20, 0x10, 0x59, 0x54, 0x4a, 0x50, 0x85, 0x58, 0x18, 0x21, 0x43, 0x59, 0xb0, 0xa0,
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+	0x02, 0xcb, 0x2e, 0xfa, 0x11, 0x55, 0x57, 0x55, 0x17, 0x88, 0x0d, 0x08, 0xb5, 0x8b, 0xfe, 0x06,
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+	0x63, 0x70, 0xdd, 0x23, 0x2c, 0x20, 0xcc, 0x72, 0x3b, 0x7c, 0xdb, 0xda, 0x5d, 0x69, 0x21, 0xee,
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+	0xde, 0x5a, 0x9d, 0xb7, 0x96, 0x1b, 0x76, 0xd3, 0x50, 0x52, 0x65, 0x2b, 0xc9, 0x91, 0x25, 0x93,
+	0xd0, 0xac, 0x6c, 0x1f, 0x30, 0x6c, 0xed, 0xae, 0xc4, 0x7f, 0x32, 0x30, 0xe3, 0x06, 0x7e, 0x48,
+	0x2c, 0xf1, 0x2b, 0x8f, 0x8c, 0x3c, 0xaa, 0x82, 0x99, 0x88, 0x9b, 0x27, 0x0a, 0x98, 0xb2, 0x19,
+	0xde, 0x8c, 0xda, 0x2e, 0x47, 0xcf, 0x5d, 0xea, 0x06, 0x4c, 0x7d, 0x00, 0x8a, 0x31, 0x82, 0x50,
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+	0x49, 0x4a, 0x8d, 0xb5, 0xdf, 0x2d, 0x2c, 0xc3, 0xfb, 0x0f, 0x3f, 0x9e, 0xef, 0x2f, 0x5d, 0xb6,
+	0xf8, 0x74, 0xbe, 0xbf, 0xb4, 0x78, 0x89, 0xb0, 0xf6, 0x12, 0x5d, 0x3d, 0x02, 0x4c, 0x08, 0x66,
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+	0x5a, 0x5a, 0xad, 0xc0, 0x64, 0xb8, 0x30, 0x1d, 0x2e, 0x6c, 0x84, 0xdd, 0xe6, 0xfc, 0xd1, 0x41,
+	0x4d, 0xce, 0x0f, 0xb6, 0x5c, 0x86, 0x2e, 0x6c, 0xb1, 0x19, 0x76, 0x44, 0x7a, 0xbd, 0x14, 0x6b,
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+	0xa5, 0x44, 0x72, 0x73, 0x92, 0x17, 0xb5, 0x0a, 0x46, 0x28, 0x62, 0x91, 0xb4, 0x3f, 0x97, 0x80,
+	0x23, 0x10, 0xe6, 0x1b, 0xa0, 0xf5, 0x0a, 0x4e, 0x2d, 0x52, 0x9b, 0xe0, 0x1a, 0x15, 0x5d, 0x98,
+	0xa6, 0x08, 0x25, 0xd5, 0xdc, 0x39, 0xe6, 0xd0, 0x72, 0xd2, 0x44, 0xf3, 0x87, 0x02, 0x66, 0x6c,
+	0x86, 0x6d, 0x1f, 0x53, 0x97, 0xa3, 0x86, 0xe7, 0x91, 0x4e, 0xc8, 0xff, 0xc3, 0xd2, 0x45, 0x30,
+	0xee, 0x26, 0xc9, 0x5b, 0xbc, 0x1b, 0x21, 0xa1, 0xac, 0xe8, 0x94, 0xe4, 0xd9, 0xcb, 0x6e, 0x84,
+	0xd4, 0x75, 0x30, 0x9d, 0x42, 0xfc, 0xd0, 0xe7, 0x5b, 0x01, 0xc3, 0xda, 0xf0, 0x5f, 0x0c, 0x98,
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+	0xfd, 0xca, 0x2a, 0x31, 0x5f, 0x81, 0xb9, 0x2b, 0x87, 0x17, 0x06, 0x3e, 0x02, 0x13, 0x82, 0x09,
+	0x95, 0x07, 0x42, 0x6d, 0x3f, 0x3a, 0xe3, 0x31, 0x34, 0x4d, 0x5d, 0xfd, 0x36, 0x04, 0x86, 0x6d,
+	0x86, 0xd5, 0xf7, 0x60, 0x3c, 0x73, 0x25, 0x6f, 0xe5, 0x8e, 0xa0, 0x67, 0xc9, 0xf5, 0x7b, 0x83,
+	0xa0, 0xd2, 0x5e, 0x66, 0xf9, 0xe8, 0xea, 0x55, 0x50, 0x11, 0x98, 0xc8, 0x5e, 0x83, 0xdb, 0xfd,
+	0x6a, 0x66, 0x60, 0x7a, 0x6d, 0x20, 0xd8, 0x85, 0x45, 0xdb, 0x60, 0xb2, 0x67, 0x37, 0xee, 0xf4,
+	0x2b, 0x90, 0xc5, 0xe9, 0x70, 0x30, 0x5c, 0xda, 0x49, 0x1f, 0xfd, 0x10, 0x7f, 0x63, 0x9a, 0x8f,
+	0x0f, 0x4f, 0x0d, 0xe5, 0xf8, 0xd4, 0x50, 0x7e, 0x9d, 0x1a, 0xca, 0xe7, 0x33, 0xa3, 0x70, 0x7c,
+	0x66, 0x14, 0xbe, 0x9f, 0x19, 0x85, 0xd7, 0x77, 0xb1, 0xcf, 0xb7, 0x3b, 0x2d, 0xe8, 0x91, 0x40,
+	0x7e, 0x66, 0xad, 0xab, 0x1b, 0x10, 0x2f, 0x1f, 0x6b, 0x8d, 0x89, 0xc9, 0xad, 0xfd, 0x0e, 0x00,
+	0x00, 0xff, 0xff, 0xc2, 0x24, 0xb6, 0x0e, 0x00, 0x06, 0x00, 0x00,
 }

 // Reference imports to suppress errors if they are not otherwise used.
@ -345,6 +464,8 @@ type MsgClient interface {
 	UpdateParams(ctx context.Context, in *MsgUpdateParams, opts ...grpc.CallOption) (*MsgUpdateParamsResponse, error)
 	// NonAtomicExec allows users to submit multiple messages for non-atomic execution.
 	NonAtomicExec(ctx context.Context, in *MsgNonAtomicExec, opts ...grpc.CallOption) (*MsgNonAtomicExecResponse, error)
+	// MigrateAccount migrates the account to x/accounts.
+	MigrateAccount(ctx context.Context, in *MsgMigrateAccount, opts ...grpc.CallOption) (*MsgMigrateAccountResponse, error)
 }

 type msgClient struct {
@ -373,6 +494,15 @@ func (c *msgClient) NonAtomicExec(ctx context.Context, in *MsgNonAtomicExec, opt
 	return out, nil
 }

+func (c *msgClient) MigrateAccount(ctx context.Context, in *MsgMigrateAccount, opts ...grpc.CallOption) (*MsgMigrateAccountResponse, error) {
+	out := new(MsgMigrateAccountResponse)
+	err := c.cc.Invoke(ctx, "/cosmos.auth.v1beta1.Msg/MigrateAccount", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // MsgServer is the server API for Msg service.
 type MsgServer interface {
 	// UpdateParams defines a (governance) operation for updating the x/auth module
@ -380,6 +510,8 @@ type MsgServer interface {
 	UpdateParams(context.Context, *MsgUpdateParams) (*MsgUpdateParamsResponse, error)
 	// NonAtomicExec allows users to submit multiple messages for non-atomic execution.
 	NonAtomicExec(context.Context, *MsgNonAtomicExec) (*MsgNonAtomicExecResponse, error)
+	// MigrateAccount migrates the account to x/accounts.
+	MigrateAccount(context.Context, *MsgMigrateAccount) (*MsgMigrateAccountResponse, error)
 }

 // UnimplementedMsgServer can be embedded to have forward compatible implementations.
@ -392,6 +524,9 @@ func (*UnimplementedMsgServer) UpdateParams(ctx context.Context, req *MsgUpdateP
 func (*UnimplementedMsgServer) NonAtomicExec(ctx context.Context, req *MsgNonAtomicExec) (*MsgNonAtomicExecResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method NonAtomicExec not implemented")
 }
+func (*UnimplementedMsgServer) MigrateAccount(ctx context.Context, req *MsgMigrateAccount) (*MsgMigrateAccountResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method MigrateAccount not implemented")
+}

 func RegisterMsgServer(s grpc1.Server, srv MsgServer) {
 	s.RegisterService(&_Msg_serviceDesc, srv)
@ -433,6 +568,24 @@ func _Msg_NonAtomicExec_Handler(srv interface{}, ctx context.Context, dec func(i
 	return interceptor(ctx, in, info, handler)
 }

+func _Msg_MigrateAccount_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(MsgMigrateAccount)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MsgServer).MigrateAccount(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/cosmos.auth.v1beta1.Msg/MigrateAccount",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MsgServer).MigrateAccount(ctx, req.(*MsgMigrateAccount))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var Msg_serviceDesc = _Msg_serviceDesc
 var _Msg_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "cosmos.auth.v1beta1.Msg",
@ -446,6 +599,10 @@ var _Msg_serviceDesc = grpc.ServiceDesc{
 			MethodName: "NonAtomicExec",
 			Handler:    _Msg_NonAtomicExec_Handler,
 		},
+		{
+			MethodName: "MigrateAccount",
+			Handler:    _Msg_MigrateAccount_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "cosmos/auth/v1beta1/tx.proto",
@ -637,6 +794,90 @@ func (m *MsgNonAtomicExecResponse) MarshalToSizedBuffer(dAtA []byte) (int, error
 	return len(dAtA) - i, nil
 }

+func (m *MsgMigrateAccount) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *MsgMigrateAccount) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *MsgMigrateAccount) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.AccountInitMsg != nil {
+		{
+			size, err := m.AccountInitMsg.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintTx(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x1a
+	}
+	if len(m.AccountType) > 0 {
+		i -= len(m.AccountType)
+		copy(dAtA[i:], m.AccountType)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.AccountType)))
+		i--
+		dAtA[i] = 0x12
+	}
+	if len(m.Signer) > 0 {
+		i -= len(m.Signer)
+		copy(dAtA[i:], m.Signer)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.Signer)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *MsgMigrateAccountResponse) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *MsgMigrateAccountResponse) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *MsgMigrateAccountResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.InitResponse != nil {
+		{
+			size, err := m.InitResponse.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintTx(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
 func encodeVarintTx(dAtA []byte, offset int, v uint64) int {
 	offset -= sovTx(v)
 	base := offset
@ -723,6 +964,40 @@ func (m *MsgNonAtomicExecResponse) Size() (n int) {
 	return n
 }

+func (m *MsgMigrateAccount) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.Signer)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
+	l = len(m.AccountType)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
+	if m.AccountInitMsg != nil {
+		l = m.AccountInitMsg.Size()
+		n += 1 + l + sovTx(uint64(l))
+	}
+	return n
+}
+
+func (m *MsgMigrateAccountResponse) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.InitResponse != nil {
+		l = m.InitResponse.Size()
+		n += 1 + l + sovTx(uint64(l))
+	}
+	return n
+}
+
 func sovTx(x uint64) (n int) {
 	return (math_bits.Len64(x|1) + 6) / 7
 }
@ -1212,6 +1487,242 @@ func (m *MsgNonAtomicExecResponse) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *MsgMigrateAccount) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowTx
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: MsgMigrateAccount: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: MsgMigrateAccount: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Signer", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Signer = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field AccountType", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.AccountType = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field AccountInitMsg", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.AccountInitMsg == nil {
+				m.AccountInitMsg = &any.Any{}
+			}
+			if err := m.AccountInitMsg.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTx(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthTx
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *MsgMigrateAccountResponse) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowTx
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: MsgMigrateAccountResponse: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: MsgMigrateAccountResponse: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field InitResponse", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.InitResponse == nil {
+				m.InitResponse = &any.Any{}
+			}
+			if err := m.InitResponse.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTx(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthTx
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func skipTx(dAtA []byte) (n int, err error) {
 	l := len(dAtA)
 	iNdEx := 0