diff --git a/client/client.go b/client/client.go
index adb2c463..5c123026 100644
--- a/client/client.go
+++ b/client/client.go
@@ -207,8 +207,8 @@ func (cli *TMSPClient) CheckTxAsync(tx []byte) *ReqRes {
 	return cli.queueRequest(types.RequestCheckTx(tx))
 }
 
-func (cli *TMSPClient) GetHashAsync() *ReqRes {
-	return cli.queueRequest(types.RequestGetHash())
+func (cli *TMSPClient) CommitAsync() *ReqRes {
+	return cli.queueRequest(types.RequestCommit())
 }
 
 func (cli *TMSPClient) QueryAsync(query []byte) *ReqRes {
@@ -251,8 +251,8 @@ func (cli *TMSPClient) CheckTxSync(tx []byte) (code types.CodeType, result []byt
 	return res.Code, res.Data, res.Log, nil
 }
 
-func (cli *TMSPClient) GetHashSync() (hash []byte, log string, err error) {
-	reqres := cli.queueRequest(types.RequestGetHash())
+func (cli *TMSPClient) CommitSync() (hash []byte, log string, err error) {
+	reqres := cli.queueRequest(types.RequestCommit())
 	cli.FlushSync()
 	if cli.err != nil {
 		return nil, "", cli.err
diff --git a/cmd/tmsp-cli/tmsp-cli.go b/cmd/tmsp-cli/tmsp-cli.go
index fba8f130..f111b3e9 100644
--- a/cmd/tmsp-cli/tmsp-cli.go
+++ b/cmd/tmsp-cli/tmsp-cli.go
@@ -83,7 +83,7 @@ func main() {
 			Name:  "get_hash",
 			Usage: "Get application Merkle root hash",
 			Action: func(c *cli.Context) {
-				cmdGetHash(c)
+				cmdCommit(c)
 			},
 		},
 		{
@@ -245,8 +245,8 @@ func cmdCheckTx(c *cli.Context) {
 }
 
 // Get application Merkle root hash
-func cmdGetHash(c *cli.Context) {
-	res, err := makeRequest(conn, types.RequestGetHash())
+func cmdCommit(c *cli.Context) {
+	res, err := makeRequest(conn, types.RequestCommit())
 	if err != nil {
 		fmt.Println(err.Error())
 		return
diff --git a/example/golang/counter.go b/example/golang/counter.go
index 1d1081df..b4da31bf 100644
--- a/example/golang/counter.go
+++ b/example/golang/counter.go
@@ -54,7 +54,7 @@ func (app *CounterApplication) CheckTx(tx []byte) (code types.CodeType, result [
 	return types.CodeType_OK, nil, ""
 }
 
-func (app *CounterApplication) GetHash() (hash []byte, log string) {
+func (app *CounterApplication) Commit() (hash []byte, log string) {
 	app.hashCount += 1
 
 	if app.txCount == 0 {
diff --git a/example/golang/dummy.go b/example/golang/dummy.go
index 2f1e7b90..818cd363 100644
--- a/example/golang/dummy.go
+++ b/example/golang/dummy.go
@@ -42,7 +42,7 @@ func (app *DummyApplication) CheckTx(tx []byte) (code types.CodeType, result []b
 	return types.CodeType_OK, nil, ""
 }
 
-func (app *DummyApplication) GetHash() (hash []byte, log string) {
+func (app *DummyApplication) Commit() (hash []byte, log string) {
 	hash = app.state.Hash()
 	return hash, ""
 }
diff --git a/server/server.go b/server/server.go
index d5d1a124..933aa4c6 100644
--- a/server/server.go
+++ b/server/server.go
@@ -112,9 +112,9 @@ func handleRequest(app types.Application, req *types.Request, responses chan<- *
 	case types.MessageType_CheckTx:
 		code, result, logStr := app.CheckTx(req.Data)
 		responses <- types.ResponseCheckTx(code, result, logStr)
-	case types.MessageType_GetHash:
-		hash, logStr := app.GetHash()
-		responses <- types.ResponseGetHash(hash, logStr)
+	case types.MessageType_Commit:
+		hash, logStr := app.Commit()
+		responses <- types.ResponseCommit(hash, logStr)
 	case types.MessageType_Query:
 		code, result, logStr := app.Query(req.Data)
 		responses <- types.ResponseQuery(code, result, logStr)
diff --git a/types/application.go b/types/application.go
index 8f27282f..d0379df0 100644
--- a/types/application.go
+++ b/types/application.go
@@ -15,7 +15,7 @@ type Application interface {
 	CheckTx(tx []byte) (code CodeType, result []byte, log string)
 
 	// Return the application Merkle root hash
-	GetHash() (hash []byte, log string)
+	Commit() (hash []byte, log string)
 
 	// Query for state
 	Query(query []byte) (code CodeType, result []byte, log string)
diff --git a/types/messages.go b/types/messages.go
index 736745bf..49c02bea 100644
--- a/types/messages.go
+++ b/types/messages.go
@@ -48,9 +48,9 @@ func RequestCheckTx(txBytes []byte) *Request {
 	}
 }
 
-func RequestGetHash() *Request {
+func RequestCommit() *Request {
 	return &Request{
-		Type: MessageType_GetHash,
+		Type: MessageType_Commit,
 	}
 }
 
@@ -115,9 +115,9 @@ func ResponseCheckTx(code CodeType, result []byte, log string) *Response {
 	}
 }
 
-func ResponseGetHash(hash []byte, log string) *Response {
+func ResponseCommit(hash []byte, log string) *Response {
 	return &Response{
-		Type: MessageType_GetHash,
+		Type: MessageType_Commit,
 		Data: hash,
 		Log:  log,
 	}
diff --git a/types/types.pb.go b/types/types.pb.go
index 8e86ed28..ec1bb40d 100644
--- a/types/types.pb.go
+++ b/types/types.pb.go
@@ -34,7 +34,7 @@ const (
 	MessageType_Exception   MessageType = 5
 	MessageType_AppendTx    MessageType = 17
 	MessageType_CheckTx     MessageType = 18
-	MessageType_GetHash     MessageType = 19
+	MessageType_Commit      MessageType = 19
 	MessageType_Query       MessageType = 20
 )
 
@@ -47,7 +47,7 @@ var MessageType_name = map[int32]string{
 	5:  "Exception",
 	17: "AppendTx",
 	18: "CheckTx",
-	19: "GetHash",
+	19: "Commit",
 	20: "Query",
 }
 var MessageType_value = map[string]int32{
@@ -59,7 +59,7 @@ var MessageType_value = map[string]int32{
 	"Exception":   5,
 	"AppendTx":    17,
 	"CheckTx":     18,
-	"GetHash":     19,
+	"Commit":      19,
 	"Query":       20,
 }
 
@@ -143,31 +143,31 @@ func init() {
 }
 
 var fileDescriptor0 = []byte{
-	// 405 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xa4, 0x92, 0xdf, 0x6e, 0xd3, 0x30,
-	0x14, 0xc6, 0x49, 0x9b, 0xf4, 0xcf, 0x69, 0xd7, 0xb9, 0x87, 0x22, 0xe5, 0x12, 0x0d, 0x09, 0xa1,
-	0x5d, 0x0c, 0x69, 0x3c, 0xc1, 0x98, 0x3a, 0xa8, 0x10, 0x9b, 0x08, 0xdb, 0x03, 0x18, 0xe7, 0xb4,
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-	0x23, 0x19, 0x23, 0x37, 0x74, 0xeb, 0x45, 0x11, 0xd7, 0x11, 0x21, 0x2d, 0xa5, 0x95, 0x79, 0xcf,
-	0xef, 0x9b, 0x16, 0xb1, 0x46, 0x01, 0xfd, 0x1d, 0xed, 0xf3, 0xbe, 0xb7, 0xc6, 0x45, 0x28, 0x71,
-	0x01, 0xd9, 0x77, 0x59, 0x3b, 0xca, 0xd3, 0xe8, 0x75, 0xe2, 0xe4, 0x77, 0x02, 0xa3, 0x82, 0x4c,
-	0xa3, 0xd9, 0xd0, 0x7f, 0x0d, 0x7c, 0x01, 0xa9, 0xd2, 0x25, 0xc5, 0x89, 0xb3, 0xf3, 0xe3, 0x43,
-	0xef, 0xa5, 0xb7, 0xba, 0xc6, 0xb0, 0x18, 0x18, 0xa8, 0x6d, 0x75, 0xfb, 0xc0, 0x10, 0x45, 0x60,
-	0xad, 0xf5, 0x26, 0xcf, 0x3a, 0x56, 0x5f, 0x9e, 0xfe, 0x4a, 0x60, 0xf2, 0x68, 0x2c, 0x1e, 0xc3,
-	0xe4, 0xda, 0xd5, 0xf5, 0xc1, 0x12, 0x4f, 0x70, 0x04, 0xe9, 0x52, 0x6d, 0xb5, 0x48, 0x70, 0x0c,
-	0xd9, 0x55, 0xed, 0xcc, 0x56, 0xf4, 0x82, 0xb9, 0xe2, 0xb5, 0x16, 0x7d, 0x3c, 0x82, 0xf1, 0x67,
-	0xb2, 0x37, 0x8d, 0xad, 0x34, 0x8b, 0x34, 0xc8, 0xe5, 0xbd, 0xa2, 0x4e, 0x66, 0x38, 0x85, 0xd1,
-	0x45, 0xd3, 0x10, 0x97, 0xb7, 0xf7, 0x62, 0x8e, 0x13, 0x18, 0x5e, 0x6e, 0x49, 0xed, 0xbc, 0xc0,
-	0x20, 0xde, 0x91, 0x7d, 0x2f, 0x7d, 0xde, 0xd3, 0x10, 0xfd, 0xc9, 0x51, 0xbb, 0x17, 0x8b, 0xd3,
-	0x3f, 0xfe, 0x9a, 0x1e, 0xce, 0x82, 0x03, 0xe8, 0xdd, 0x7c, 0xf0, 0x10, 0x73, 0x38, 0x5a, 0xb1,
-	0xa5, 0x96, 0x65, 0xbd, 0x0c, 0x07, 0xf1, 0x34, 0x02, 0xa6, 0x77, 0x2c, 0x9d, 0xdd, 0xea, 0xb6,
-	0xfa, 0x49, 0xa5, 0x87, 0x5a, 0x80, 0x58, 0xb1, 0x71, 0xeb, 0x75, 0xa5, 0x2a, 0x62, 0x7b, 0x45,
-	0x64, 0x3c, 0x20, 0xc2, 0xec, 0x8e, 0x77, 0xac, 0x7f, 0xf0, 0xe1, 0x67, 0x7b, 0x4a, 0x1f, 0xb7,
-	0x64, 0x7f, 0x4d, 0x15, 0x6f, 0xba, 0xb8, 0x48, 0xfa, 0x56, 0x96, 0xd7, 0x9a, 0x15, 0x89, 0xc1,
-	0xa3, 0xa6, 0x0b, 0xa5, 0xb4, 0x63, 0x2b, 0x86, 0xf8, 0x0c, 0xe6, 0xff, 0xc4, 0x3b, 0x2e, 0x8d,
-	0x18, 0x7d, 0x19, 0xc4, 0x37, 0xf5, 0xe6, 0x6f, 0x00, 0x00, 0x00, 0xff, 0xff, 0xcf, 0x90, 0x25,
-	0x05, 0x68, 0x02, 0x00, 0x00,
+	// 406 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xa4, 0x92, 0x5f, 0x6e, 0xd3, 0x40,
+	0x10, 0xc6, 0x71, 0x62, 0xe7, 0xcf, 0x24, 0x4d, 0x37, 0x43, 0x90, 0xfc, 0x88, 0x8a, 0x84, 0x50,
+	0x1f, 0x8a, 0x54, 0x4e, 0x50, 0xa2, 0x54, 0x8a, 0x10, 0xad, 0x30, 0xed, 0x01, 0xcc, 0x7a, 0x12,
+	0x5b, 0x71, 0x66, 0x8d, 0x77, 0x17, 0x1a, 0xee, 0xc0, 0x13, 0xe7, 0xe0, 0x8e, 0xec, 0xae, 0x53,
+	0xa9, 0x3c, 0xf7, 0xc5, 0x9a, 0xef, 0xdb, 0x9d, 0x99, 0xdf, 0x8c, 0x17, 0xe6, 0xe6, 0xd0, 0x90,
+	0x7e, 0x1f, 0xbe, 0x17, 0x4d, 0xab, 0x8c, 0xc2, 0x24, 0x88, 0xb3, 0x3d, 0x0c, 0x33, 0xfa, 0x6e,
+	0x49, 0x1b, 0x7c, 0x0b, 0xb1, 0xf7, 0xd2, 0xe8, 0x75, 0xf4, 0x6e, 0x76, 0x89, 0x17, 0xdd, 0xed,
+	0xcf, 0xa4, 0x75, 0xbe, 0xa5, 0x3b, 0x27, 0xb2, 0x70, 0x8e, 0x08, 0x71, 0x91, 0x9b, 0x3c, 0xed,
+	0xb9, 0x7b, 0xd3, 0x2c, 0xc4, 0x28, 0xa0, 0xbf, 0xa3, 0x43, 0xda, 0x77, 0xd6, 0x38, 0xf3, 0x21,
+	0x2e, 0x20, 0xf9, 0x91, 0xd7, 0x96, 0xd2, 0x38, 0x78, 0x9d, 0x38, 0xfb, 0x13, 0xc1, 0x28, 0x23,
+	0xdd, 0x28, 0xd6, 0xf4, 0xac, 0x86, 0x6f, 0x20, 0x96, 0xaa, 0xa0, 0xd0, 0x71, 0x76, 0x79, 0x7a,
+	0xcc, 0x5d, 0x3a, 0xab, 0x4b, 0xf4, 0x87, 0x9e, 0x81, 0xda, 0x56, 0xb5, 0x8f, 0x0c, 0x41, 0x78,
+	0xd6, 0x5a, 0x6d, 0xd3, 0xa4, 0x63, 0x75, 0xe1, 0xf9, 0xef, 0x08, 0x26, 0x4f, 0xda, 0xe2, 0x29,
+	0x4c, 0x6e, 0x6c, 0x5d, 0x1f, 0x2d, 0xf1, 0x02, 0x47, 0x10, 0xaf, 0x64, 0xa9, 0x44, 0x84, 0x63,
+	0x48, 0xae, 0x6b, 0xab, 0x4b, 0xd1, 0xf3, 0xe6, 0x9a, 0x37, 0x4a, 0xf4, 0xf1, 0x04, 0xc6, 0x5f,
+	0xc9, 0xdc, 0x36, 0xa6, 0x52, 0x2c, 0x62, 0x2f, 0x57, 0x0f, 0x92, 0x3a, 0x99, 0xe0, 0x14, 0x46,
+	0x57, 0x4d, 0x43, 0x5c, 0xdc, 0x3d, 0x88, 0x39, 0x4e, 0x60, 0xb8, 0x2c, 0x49, 0xee, 0x9c, 0x70,
+	0x83, 0xc1, 0x60, 0xa9, 0xf6, 0xfb, 0xca, 0x88, 0x97, 0xbe, 0xf2, 0x17, 0x4b, 0xed, 0x41, 0x2c,
+	0xce, 0xff, 0xba, 0x2d, 0x3d, 0x8e, 0x82, 0x03, 0xe8, 0xdd, 0x7e, 0x72, 0x0c, 0x73, 0x38, 0x59,
+	0xb3, 0xa1, 0x96, 0xf3, 0x7a, 0xe5, 0xe7, 0x70, 0x30, 0x02, 0xa6, 0xf7, 0x9c, 0x5b, 0x53, 0xaa,
+	0xb6, 0xfa, 0x45, 0x85, 0x63, 0x5a, 0x80, 0x58, 0xb3, 0xb6, 0x9b, 0x4d, 0x25, 0x2b, 0x62, 0x73,
+	0x4d, 0xa4, 0x1d, 0x1f, 0xc2, 0xec, 0x9e, 0x77, 0xac, 0x7e, 0xf2, 0xf1, 0x5f, 0x3b, 0x48, 0x57,
+	0x6e, 0xc5, 0x6e, 0x4b, 0x15, 0x6f, 0xbb, 0x72, 0x01, 0xf4, 0x63, 0x5e, 0xdc, 0x28, 0x96, 0x24,
+	0x06, 0x4f, 0x92, 0xae, 0xa4, 0x54, 0x96, 0x8d, 0x18, 0xe2, 0x2b, 0x98, 0xff, 0x57, 0xde, 0x72,
+	0xa1, 0xc5, 0xe8, 0xdb, 0x20, 0x3c, 0xa9, 0x0f, 0xff, 0x02, 0x00, 0x00, 0xff, 0xff, 0x41, 0x3b,
+	0x4f, 0x97, 0x67, 0x02, 0x00, 0x00,
 }
diff --git a/types/types.proto b/types/types.proto
index f14276d1..f9da8e7d 100644
--- a/types/types.proto
+++ b/types/types.proto
@@ -16,7 +16,7 @@ enum MessageType {
   Exception  = 0x05;
   AppendTx   = 0x11;
   CheckTx    = 0x12;
-  GetHash    = 0x13;
+  Commit     = 0x13;
   Query      = 0x14;
 }