diff --git a/testutil/messages.go b/testutil/messages.go
new file mode 100644
index 00000000..2890fbd5
--- /dev/null
+++ b/testutil/messages.go
@@ -0,0 +1,17 @@
+package testutil
+
+import (
+	"github.com/tendermint/go-crypto"
+	"github.com/tendermint/tmsp/types"
+)
+
+//----------------------------------------
+
+// UTILITY
+func Validator(secret string, power uint64) *types.Validator {
+	privKey := crypto.GenPrivKeyEd25519FromSecret([]byte(secret))
+	return &types.Validator{
+		PubKey: privKey.PubKey().Bytes(),
+		Power:  power,
+	}
+}
diff --git a/types/types.pb.go b/types/types.pb.go
index 2571d7f8..8c8a370e 100644
--- a/types/types.pb.go
+++ b/types/types.pb.go
@@ -97,13 +97,13 @@ const (
 	// Reserved for governance, 200 ~ 299
 	CodeType_GovUnknownEntity      CodeType = 201
 	CodeType_GovUnknownGroup       CodeType = 202
-	CodeType_GovUnknownMember      CodeType = 203
-	CodeType_GovUnknownProposal    CodeType = 204
-	CodeType_GovDuplicateEntity    CodeType = 205
-	CodeType_GovDuplicateGroup     CodeType = 206
-	CodeType_GovDuplicateMember    CodeType = 207
-	CodeType_GovDuplicateProposal  CodeType = 208
-	CodeType_GovDuplicateVote      CodeType = 209
+	CodeType_GovUnknownProposal    CodeType = 203
+	CodeType_GovDuplicateGroup     CodeType = 204
+	CodeType_GovDuplicateMember    CodeType = 205
+	CodeType_GovDuplicateProposal  CodeType = 206
+	CodeType_GovDuplicateVote      CodeType = 207
+	CodeType_GovInvalidMember      CodeType = 208
+	CodeType_GovInvalidVote        CodeType = 209
 	CodeType_GovInvalidVotingPower CodeType = 210
 )
 
@@ -123,13 +123,13 @@ var CodeType_name = map[int32]string{
 	106: "BaseInsufficientFees",
 	201: "GovUnknownEntity",
 	202: "GovUnknownGroup",
-	203: "GovUnknownMember",
-	204: "GovUnknownProposal",
-	205: "GovDuplicateEntity",
-	206: "GovDuplicateGroup",
-	207: "GovDuplicateMember",
-	208: "GovDuplicateProposal",
-	209: "GovDuplicateVote",
+	203: "GovUnknownProposal",
+	204: "GovDuplicateGroup",
+	205: "GovDuplicateMember",
+	206: "GovDuplicateProposal",
+	207: "GovDuplicateVote",
+	208: "GovInvalidMember",
+	209: "GovInvalidVote",
 	210: "GovInvalidVotingPower",
 }
 var CodeType_value = map[string]int32{
@@ -148,13 +148,13 @@ var CodeType_value = map[string]int32{
 	"BaseInsufficientFees":  106,
 	"GovUnknownEntity":      201,
 	"GovUnknownGroup":       202,
-	"GovUnknownMember":      203,
-	"GovUnknownProposal":    204,
-	"GovDuplicateEntity":    205,
-	"GovDuplicateGroup":     206,
-	"GovDuplicateMember":    207,
-	"GovDuplicateProposal":  208,
-	"GovDuplicateVote":      209,
+	"GovUnknownProposal":    203,
+	"GovDuplicateGroup":     204,
+	"GovDuplicateMember":    205,
+	"GovDuplicateProposal":  206,
+	"GovDuplicateVote":      207,
+	"GovInvalidMember":      208,
+	"GovInvalidVote":        209,
 	"GovInvalidVotingPower": 210,
 }
 
@@ -224,46 +224,46 @@ func init() {
 }
 
 var fileDescriptor0 = []byte{
-	// 649 bytes of a gzipped FileDescriptorProto
+	// 652 bytes of a gzipped FileDescriptorProto
 	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xa4, 0x54, 0xcb, 0x52, 0xdb, 0x4a,
-	0x10, 0xbd, 0x63, 0xcb, 0xc6, 0x6e, 0xf3, 0x18, 0xcf, 0xb5, 0x2f, 0xba, 0x77, 0x45, 0x71, 0xab,
-	0x52, 0x14, 0x0b, 0x92, 0x22, 0xab, 0x2c, 0xc1, 0x31, 0x94, 0x8b, 0xe2, 0x11, 0x05, 0xd8, 0x0b,
-	0xa9, 0x6d, 0x29, 0x16, 0x33, 0x8a, 0x34, 0x02, 0x9c, 0x75, 0xbe, 0x26, 0x3f, 0x90, 0x2f, 0xc8,
-	0x22, 0xef, 0xc7, 0x17, 0xa5, 0x47, 0x92, 0x8d, 0x09, 0x8b, 0x2c, 0xb2, 0x71, 0xcd, 0x39, 0xdd,
-	0xd3, 0xe7, 0x9c, 0xd6, 0x94, 0xa1, 0xad, 0x27, 0x31, 0xa6, 0x0f, 0xf3, 0xdf, 0xad, 0x38, 0x51,
-	0x5a, 0x89, 0x5a, 0x0e, 0xd6, 0xdf, 0x32, 0x58, 0x70, 0xf0, 0x65, 0x86, 0xa9, 0x16, 0x0f, 0xc0,
-	0x32, 0xa4, 0xcd, 0xd6, 0xd8, 0xc6, 0xf2, 0xb6, 0xd8, 0x2a, 0xda, 0x0f, 0x31, 0x4d, 0xdd, 0x11,
-	0x9e, 0x12, 0x70, 0xf2, 0xba, 0x10, 0x60, 0xf9, 0xae, 0x76, 0xed, 0x0a, 0xf5, 0x2d, 0x3a, 0xf9,
-	0x59, 0x70, 0xa8, 0x8e, 0x71, 0x62, 0x57, 0x89, 0x6a, 0x3a, 0xe6, 0x28, 0x3a, 0x50, 0xbb, 0x72,
-	0xa3, 0x0c, 0x6d, 0x2b, 0xe7, 0x0a, 0x20, 0x1e, 0x01, 0xd0, 0x21, 0xa4, 0x3b, 0x2a, 0x49, 0xed,
-	0xda, 0x5a, 0x75, 0xa3, 0xb5, 0xcd, 0x4b, 0xa5, 0xf3, 0x69, 0xc1, 0x99, 0xeb, 0x11, 0xff, 0x40,
-	0x3d, 0xc0, 0x70, 0x14, 0x68, 0xbb, 0x4e, 0x83, 0x2c, 0xa7, 0x44, 0xeb, 0xef, 0x18, 0x34, 0x1c,
-	0x4c, 0x63, 0x25, 0x53, 0xfc, 0x23, 0xeb, 0xff, 0x83, 0xe5, 0x29, 0x1f, 0x73, 0xef, 0xcb, 0xdb,
-	0x2b, 0xe5, 0xdd, 0x1e, 0x51, 0xc5, 0x45, 0x53, 0x34, 0x69, 0x30, 0x49, 0x54, 0x32, 0x4d, 0x93,
-	0x03, 0x93, 0x3a, 0x52, 0x23, 0x8a, 0x91, 0xa7, 0xa6, 0xe3, 0x2f, 0xf9, 0xea, 0xbf, 0xcf, 0xb7,
-	0xfe, 0x04, 0x9a, 0xb3, 0x82, 0x09, 0x1b, 0x67, 0x17, 0x07, 0xb4, 0x49, 0x96, 0x3b, 0x2c, 0x91,
-	0x91, 0x8f, 0xd5, 0x35, 0x26, 0xb9, 0x71, 0xcb, 0x29, 0xc0, 0xe6, 0x1b, 0x06, 0xad, 0xb9, 0x8c,
-	0x62, 0x05, 0x5a, 0x47, 0x59, 0x14, 0x95, 0x14, 0xff, 0x4b, 0x34, 0xc0, 0xea, 0x7b, 0x81, 0xe2,
-	0x4c, 0x34, 0xa1, 0xb6, 0x17, 0x65, 0x69, 0xc0, 0x2b, 0x86, 0x1c, 0xc8, 0xa1, 0xe2, 0x55, 0xb1,
-	0x04, 0xcd, 0xe7, 0xa8, 0x8f, 0x63, 0x1d, 0x2a, 0xc9, 0x2d, 0x03, 0xfb, 0x37, 0x1e, 0x16, 0xb0,
-	0x26, 0x16, 0xa1, 0xb1, 0x13, 0xc7, 0x28, 0xfd, 0xd3, 0x1b, 0xde, 0x16, 0x2d, 0x58, 0xe8, 0x05,
-	0xe8, 0x8d, 0x09, 0xd0, 0x16, 0xa1, 0xde, 0x53, 0x97, 0x97, 0xa1, 0xe6, 0x7f, 0x9b, 0xc9, 0xcf,
-	0x32, 0x4c, 0x26, 0xbc, 0x63, 0x06, 0x0c, 0x64, 0xa8, 0x7b, 0x81, 0x1b, 0x4a, 0xde, 0x35, 0x03,
-	0xfa, 0xd2, 0xdf, 0x8d, 0x94, 0x37, 0xe6, 0xab, 0x9b, 0xaf, 0x2d, 0x68, 0x4c, 0x97, 0x2a, 0xea,
-	0x50, 0x39, 0x3e, 0x20, 0x83, 0x6d, 0x58, 0x1a, 0x48, 0x8d, 0x89, 0x74, 0xa3, 0xbe, 0xd9, 0x28,
-	0x39, 0x25, 0xaa, 0x2f, 0x69, 0xe7, 0xa1, 0x1c, 0x15, 0x54, 0xc5, 0x0c, 0xda, 0x75, 0xfd, 0x23,
-	0x25, 0x3d, 0x24, 0xd7, 0x1c, 0x16, 0xcf, 0xa4, 0x9b, 0xe9, 0x40, 0x25, 0xe1, 0x2b, 0xf4, 0xc9,
-	0x78, 0x17, 0xda, 0x03, 0x99, 0x66, 0xc3, 0x61, 0xe8, 0x85, 0x28, 0xf5, 0x5e, 0x26, 0xfd, 0x94,
-	0x02, 0x08, 0x58, 0x3e, 0x93, 0x63, 0xa9, 0xae, 0x65, 0xf9, 0xc2, 0x79, 0xdd, 0xb4, 0xee, 0xba,
-	0x29, 0xde, 0x55, 0x40, 0x33, 0xd3, 0xd0, 0x33, 0x95, 0x21, 0x7d, 0x09, 0x61, 0x98, 0x72, 0xc0,
-	0x8e, 0xe7, 0xa9, 0x4c, 0x6a, 0x3e, 0xa2, 0x2f, 0xc1, 0x0b, 0x7e, 0xce, 0x41, 0x20, 0xfe, 0x85,
-	0xae, 0x61, 0xef, 0xbb, 0x08, 0x85, 0x0d, 0x9d, 0x7b, 0x25, 0xc4, 0x94, 0xbf, 0x20, 0x2f, 0x7c,
-	0x5f, 0x5d, 0x95, 0x0a, 0x7d, 0xa9, 0x43, 0x3d, 0xe1, 0xef, 0x19, 0x29, 0xac, 0xdc, 0xd2, 0xfb,
-	0x89, 0xca, 0x62, 0xfe, 0x81, 0xdd, 0x6d, 0x3e, 0xc4, 0xcb, 0x0b, 0x4c, 0xf8, 0x47, 0x26, 0x56,
-	0x41, 0xdc, 0xd2, 0x27, 0x89, 0x8a, 0x55, 0xea, 0x46, 0xfc, 0xd3, 0xb4, 0xf0, 0x34, 0x8b, 0xa3,
-	0xd0, 0x73, 0x35, 0x96, 0xe3, 0x3f, 0x33, 0x0a, 0xd6, 0x9e, 0x2f, 0x14, 0x02, 0x5f, 0xee, 0x5d,
-	0x28, 0x25, 0xbe, 0x32, 0xca, 0xd6, 0x99, 0x2f, 0xcc, 0x44, 0xbe, 0x4d, 0x4d, 0xcd, 0x4a, 0xe7,
-	0x4a, 0x23, 0xff, 0xce, 0xc4, 0x7f, 0xd0, 0x25, 0x7a, 0x20, 0xf3, 0x57, 0x4e, 0x24, 0x2d, 0xfa,
-	0xc4, 0x3c, 0x58, 0xfe, 0x83, 0x5d, 0xd4, 0xf3, 0xbf, 0x9f, 0xc7, 0x3f, 0x03, 0x00, 0x00, 0xff,
-	0xff, 0x7f, 0x32, 0xc0, 0xd9, 0x93, 0x04, 0x00, 0x00,
+	0x10, 0xbd, 0x63, 0xcb, 0xc6, 0x6e, 0x83, 0x19, 0x0f, 0xf6, 0xc5, 0xf7, 0xae, 0x28, 0x52, 0x95,
+	0xa2, 0x58, 0x90, 0x14, 0x59, 0x65, 0x09, 0x8e, 0xa1, 0x5c, 0x14, 0x8f, 0x28, 0xc0, 0x5e, 0x48,
+	0x6d, 0x4b, 0xb1, 0x98, 0x51, 0xa4, 0x11, 0xe0, 0xac, 0xf2, 0x3d, 0xf9, 0x81, 0x7c, 0x41, 0x16,
+	0x79, 0x3f, 0xbe, 0x28, 0x3d, 0x92, 0x6c, 0x4c, 0x58, 0x64, 0x91, 0x8d, 0x6b, 0xce, 0xe9, 0xe9,
+	0xd3, 0xe7, 0xb4, 0xa6, 0x0c, 0x2d, 0x3d, 0x89, 0x30, 0x79, 0x94, 0xfd, 0x6e, 0x45, 0xb1, 0xd2,
+	0x4a, 0x54, 0x32, 0xb0, 0xfe, 0x8e, 0xc1, 0x82, 0x8d, 0xaf, 0x52, 0x4c, 0xb4, 0x78, 0x08, 0x96,
+	0x21, 0xbb, 0x6c, 0x8d, 0x6d, 0x34, 0xb7, 0xc5, 0x56, 0x7e, 0xfd, 0x10, 0x93, 0xc4, 0x19, 0xe1,
+	0x29, 0x01, 0x3b, 0xab, 0x0b, 0x01, 0x96, 0xe7, 0x68, 0xa7, 0x5b, 0xa2, 0x7b, 0x8b, 0x76, 0x76,
+	0x16, 0x1c, 0xca, 0x63, 0x9c, 0x74, 0xcb, 0x44, 0xd5, 0x6d, 0x73, 0x14, 0x6d, 0xa8, 0x5c, 0x39,
+	0x61, 0x8a, 0x5d, 0x2b, 0xe3, 0x72, 0x20, 0x1e, 0x03, 0xd0, 0x21, 0xa0, 0x1e, 0x15, 0x27, 0xdd,
+	0xca, 0x5a, 0x79, 0xa3, 0xb1, 0xcd, 0x8b, 0x49, 0xe7, 0xd3, 0x82, 0x3d, 0x77, 0x47, 0xfc, 0x0b,
+	0x55, 0x1f, 0x83, 0x91, 0xaf, 0xbb, 0x55, 0x12, 0xb2, 0xec, 0x02, 0xad, 0xbf, 0x67, 0x50, 0xb3,
+	0x31, 0x89, 0x94, 0x4c, 0xf0, 0xaf, 0xac, 0x3f, 0x00, 0xcb, 0x55, 0x1e, 0x66, 0xde, 0x9b, 0xdb,
+	0xcb, 0x45, 0x6f, 0x8f, 0xa8, 0xbc, 0xd1, 0x14, 0x4d, 0x1a, 0x8c, 0x63, 0x15, 0x4f, 0xd3, 0x64,
+	0xc0, 0xa4, 0x0e, 0xd5, 0x88, 0x62, 0x64, 0xa9, 0xe9, 0xf8, 0x5b, 0xbe, 0xea, 0x9f, 0xf3, 0xad,
+	0x3f, 0x85, 0xfa, 0xac, 0x60, 0xc2, 0x46, 0xe9, 0xc5, 0x01, 0x6d, 0x92, 0x65, 0x0e, 0x0b, 0x64,
+	0xc6, 0x47, 0xea, 0x1a, 0xe3, 0xcc, 0xb8, 0x65, 0xe7, 0x60, 0xf3, 0x2d, 0x83, 0xc6, 0x5c, 0x46,
+	0xb1, 0x0c, 0x8d, 0xa3, 0x34, 0x0c, 0x0b, 0x8a, 0xff, 0x23, 0x6a, 0x60, 0xf5, 0x5d, 0x5f, 0x71,
+	0x26, 0xea, 0x50, 0xd9, 0x0b, 0xd3, 0xc4, 0xe7, 0x25, 0x43, 0x0e, 0xe4, 0x50, 0xf1, 0xb2, 0x58,
+	0x82, 0xfa, 0x0b, 0xd4, 0xc7, 0x91, 0x0e, 0x94, 0xe4, 0x96, 0x81, 0xfd, 0x1b, 0x17, 0x73, 0x58,
+	0x11, 0x8b, 0x50, 0xdb, 0x89, 0x22, 0x94, 0xde, 0xe9, 0x0d, 0x6f, 0x89, 0x06, 0x2c, 0xf4, 0x7c,
+	0x74, 0xc7, 0x04, 0x68, 0x8b, 0x50, 0xed, 0xa9, 0xcb, 0xcb, 0x40, 0xf3, 0x15, 0xa3, 0xfc, 0x3c,
+	0xc5, 0x78, 0xc2, 0xdb, 0x46, 0x60, 0x20, 0x03, 0xdd, 0xf3, 0x9d, 0x40, 0xf2, 0x8e, 0x11, 0xe8,
+	0x4b, 0x6f, 0x37, 0x54, 0xee, 0x98, 0xaf, 0x6e, 0xbe, 0xb1, 0xa0, 0x36, 0x5d, 0xaa, 0xa8, 0x42,
+	0xe9, 0xf8, 0x80, 0x0c, 0xb6, 0x60, 0x69, 0x20, 0x35, 0xc6, 0xd2, 0x09, 0xfb, 0x66, 0xa3, 0xe4,
+	0x94, 0xa8, 0xbe, 0xa4, 0x9d, 0x07, 0x72, 0x94, 0x53, 0x25, 0x23, 0xb4, 0xeb, 0x78, 0x47, 0x4a,
+	0xba, 0x48, 0xae, 0x39, 0x2c, 0x9e, 0x49, 0x27, 0xd5, 0xbe, 0x8a, 0x83, 0xd7, 0xe8, 0x91, 0xf1,
+	0x0e, 0xb4, 0x06, 0x32, 0x49, 0x87, 0xc3, 0xc0, 0x0d, 0x50, 0xea, 0xbd, 0x54, 0x7a, 0x09, 0x05,
+	0x10, 0xd0, 0x3c, 0x93, 0x63, 0xa9, 0xae, 0x65, 0xf1, 0xc2, 0x79, 0xd5, 0x5c, 0xdd, 0x75, 0x12,
+	0xbc, 0x3b, 0x01, 0x8d, 0xa6, 0xa1, 0x67, 0x53, 0x86, 0xf4, 0x25, 0x84, 0x61, 0x0a, 0x81, 0x1d,
+	0xd7, 0x55, 0xa9, 0xd4, 0x7c, 0x44, 0x5f, 0x82, 0xe7, 0xfc, 0x9c, 0x03, 0x5f, 0xfc, 0x07, 0x1d,
+	0xc3, 0xde, 0x77, 0x11, 0x88, 0x2e, 0xb4, 0xef, 0x95, 0x10, 0x13, 0xfe, 0x92, 0xbc, 0xf0, 0x7d,
+	0x75, 0x55, 0x4c, 0xe8, 0x4b, 0x1d, 0xe8, 0x09, 0xff, 0xc0, 0x68, 0xc2, 0xf2, 0x2d, 0xbd, 0x1f,
+	0xab, 0x34, 0xe2, 0x1f, 0x99, 0x58, 0x05, 0x71, 0xcb, 0x9e, 0xc4, 0x2a, 0x52, 0x89, 0x13, 0xf2,
+	0x4f, 0x8c, 0x8c, 0xb6, 0xa8, 0xf0, 0x2c, 0x8d, 0xc2, 0xc0, 0x75, 0x34, 0xe6, 0x0d, 0x9f, 0xa7,
+	0x0d, 0x33, 0xfe, 0x10, 0x2f, 0x2f, 0x30, 0xe6, 0x5f, 0x18, 0x79, 0x6d, 0xcf, 0x17, 0x66, 0x5a,
+	0x5f, 0x59, 0xe1, 0x68, 0x56, 0x3a, 0x57, 0x1a, 0xf9, 0xb7, 0x29, 0x3d, 0x90, 0xd9, 0xab, 0x2d,
+	0x84, 0xbe, 0x33, 0xb1, 0x02, 0xcd, 0x5b, 0x3a, 0xbb, 0xfb, 0x83, 0x89, 0xff, 0xa1, 0x73, 0x87,
+	0xa4, 0x25, 0x9f, 0x98, 0xc7, 0xca, 0x7f, 0xb2, 0x8b, 0x6a, 0xf6, 0xd7, 0xf3, 0xe4, 0x57, 0x00,
+	0x00, 0x00, 0xff, 0xff, 0x9d, 0x98, 0x5a, 0xc8, 0x8f, 0x04, 0x00, 0x00,
 }
diff --git a/types/types.proto b/types/types.proto
index 3d520d05..8716e6cb 100644
--- a/types/types.proto
+++ b/types/types.proto
@@ -48,13 +48,13 @@ enum CodeType {
   // Reserved for governance, 200 ~ 299
   GovUnknownEntity      = 201;
   GovUnknownGroup       = 202;
-  GovUnknownMember      = 203;
-  GovUnknownProposal    = 204;
-  GovDuplicateEntity    = 205;
-  GovDuplicateGroup     = 206;
-  GovDuplicateMember    = 207;
-  GovDuplicateProposal  = 208;
-  GovDuplicateVote      = 209;
+  GovUnknownProposal    = 203;
+  GovDuplicateGroup     = 204;
+  GovDuplicateMember    = 205;
+  GovDuplicateProposal  = 206;
+  GovDuplicateVote      = 207;
+  GovInvalidMember      = 208;
+  GovInvalidVote        = 209;
   GovInvalidVotingPower = 210;
 
 }