diff --git a/services/blockheight/test/block_height_test.go b/services/blockheight/test/block_height_test.go
new file mode 100644
index 0000000..9bfb7cb
--- /dev/null
+++ b/services/blockheight/test/block_height_test.go
@@ -0,0 +1,29 @@
+// Copyright 2019 the lean-helix-go authors
+// This file is part of the lean-helix-go library in the Orbs project.
+//
+// This source code is licensed under the MIT license found in the LICENSE file in the root directory of this source tree.
+// The above notice should be included in all copies or substantial portions of the software.
+
+package test
+
+import (
+	"github.com/orbs-network/lean-helix-go/services/blockheight"
+	"github.com/orbs-network/lean-helix-go/services/interfaces"
+	"github.com/orbs-network/lean-helix-go/spec/types/go/primitives"
+	"github.com/orbs-network/lean-helix-go/test/mocks"
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func TestGenesisBlockHeight(t *testing.T) {
+	actual := blockheight.GetBlockHeight(interfaces.GenesisBlock)
+	require.Equal(t, primitives.BlockHeight(0), actual)
+}
+
+func TestBasicBlockHeight(t *testing.T) {
+	block1 := mocks.ABlock(interfaces.GenesisBlock)
+	block2 := mocks.ABlock(block1)
+	block3 := mocks.ABlock(block2)
+	actual := blockheight.GetBlockHeight(block3)
+	require.Equal(t, primitives.BlockHeight(3), actual)
+}
diff --git a/services/quorum/test/quorum_test.go b/services/quorum/test/quorum_test.go
index 9bfb7cb..ff94f2a 100644
--- a/services/quorum/test/quorum_test.go
+++ b/services/quorum/test/quorum_test.go
@@ -7,23 +7,22 @@
 package test
 
 import (
-	"github.com/orbs-network/lean-helix-go/services/blockheight"
-	"github.com/orbs-network/lean-helix-go/services/interfaces"
-	"github.com/orbs-network/lean-helix-go/spec/types/go/primitives"
-	"github.com/orbs-network/lean-helix-go/test/mocks"
+	"github.com/orbs-network/lean-helix-go/services/quorum"
 	"github.com/stretchr/testify/require"
 	"testing"
 )
 
-func TestGenesisBlockHeight(t *testing.T) {
-	actual := blockheight.GetBlockHeight(interfaces.GenesisBlock)
-	require.Equal(t, primitives.BlockHeight(0), actual)
-}
-
-func TestBasicBlockHeight(t *testing.T) {
-	block1 := mocks.ABlock(interfaces.GenesisBlock)
-	block2 := mocks.ABlock(block1)
-	block3 := mocks.ABlock(block2)
-	actual := blockheight.GetBlockHeight(block3)
-	require.Equal(t, primitives.BlockHeight(3), actual)
+func TestCommitteeQuorum(t *testing.T) {
+	require.Equal(t, 3, quorum.CalcQuorumSize(4))
+	require.Equal(t, 4, quorum.CalcQuorumSize(5))
+	require.Equal(t, 5, quorum.CalcQuorumSize(6))
+	require.Equal(t, 5, quorum.CalcQuorumSize(7))
+	require.Equal(t, 6, quorum.CalcQuorumSize(8))
+	require.Equal(t, 7, quorum.CalcQuorumSize(9))
+	require.Equal(t, 7, quorum.CalcQuorumSize(10))
+	require.Equal(t, 8, quorum.CalcQuorumSize(11))
+	require.Equal(t, 9, quorum.CalcQuorumSize(12))
+	require.Equal(t, 15, quorum.CalcQuorumSize(21))
+	require.Equal(t, 15, quorum.CalcQuorumSize(22))
+	require.Equal(t, 67, quorum.CalcQuorumSize(100))
 }
diff --git a/spec/types/go/primitives/lean_helix_primitives.mb.go b/spec/types/go/primitives/lean_helix_primitives.mb.go
index 04bd3dd..98909fa 100644
--- a/spec/types/go/primitives/lean_helix_primitives.mb.go
+++ b/spec/types/go/primitives/lean_helix_primitives.mb.go
@@ -1,3 +1,9 @@
+// Copyright 2019 the lean-helix-go authors
+// This file is part of the lean-helix-go library in the Orbs project.
+//
+// This source code is licensed under the MIT license found in the LICENSE file in the root directory of this source tree.
+// The above notice should be included in all copies or substantial portions of the software.
+
 // AUTO GENERATED FILE (by membufc proto compiler v0.0.32)
 package primitives
 
diff --git a/spec/types/go/protocol/lean_helix.mb.go b/spec/types/go/protocol/lean_helix.mb.go
index 5f61033..5612f80 100644
--- a/spec/types/go/protocol/lean_helix.mb.go
+++ b/spec/types/go/protocol/lean_helix.mb.go
@@ -1,3 +1,9 @@
+// Copyright 2019 the lean-helix-go authors
+// This file is part of the lean-helix-go library in the Orbs project.
+//
+// This source code is licensed under the MIT license found in the LICENSE file in the root directory of this source tree.
+// The above notice should be included in all copies or substantial portions of the software.
+
 // AUTO GENERATED FILE (by membufc proto compiler v0.0.32)
 package protocol