diff --git a/docs/container.md b/docs/container.md
index ef2ba19..6693980 100644
--- a/docs/container.md
+++ b/docs/container.md
@@ -21,6 +21,8 @@
 - [container/types.proto](#container/types.proto)
 
   - Messages
+    - [AccessControlList](#container.AccessControlList)
+    - [AccessGroup](#container.AccessGroup)
     - [Container](#container.Container)
     
 
@@ -164,6 +166,7 @@ via consensus in inner ring nodes
 | Capacity | [uint64](#uint64) |  | Capacity defines amount of data that can be stored in the container (doesn't used for now). |
 | OwnerID | [bytes](#bytes) |  | OwnerID is a wallet address |
 | rules | [netmap.PlacementRule](#netmap.PlacementRule) |  | Rules define storage policy for the object inside the container. |
+| Group | [AccessGroup](#container.AccessGroup) |  | Container ACL. |
 | Meta | [service.RequestMetaHeader](#service.RequestMetaHeader) |  | RequestMetaHeader contains information about request meta headers (should be embedded into message) |
 | Verify | [service.RequestVerificationHeader](#service.RequestVerificationHeader) |  | RequestVerificationHeader is a set of signatures of every NeoFS Node that processed request (should be embedded into message) |
 
@@ -193,6 +196,29 @@ via consensus in inner ring nodes
  <!-- end services -->
 
 
+<a name="container.AccessControlList"></a>
+
+### Message AccessControlList
+
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| List | [AccessGroup](#container.AccessGroup) | repeated | List of access groups. |
+
+
+<a name="container.AccessGroup"></a>
+
+### Message AccessGroup
+
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| AccessMode | [uint32](#uint32) |  | Group access mode. |
+| UserGroup | [bytes](#bytes) | repeated | Group members. |
+
+
 <a name="container.Container"></a>
 
 ### Message Container
@@ -205,6 +231,7 @@ The Container service definition.
 | Salt | [bytes](#bytes) |  | Salt is a nonce for unique container id calculation. |
 | Capacity | [uint64](#uint64) |  | Capacity defines amount of data that can be stored in the container (doesn't used for now). |
 | Rules | [netmap.PlacementRule](#netmap.PlacementRule) |  | Rules define storage policy for the object inside the container. |
+| List | [AccessControlList](#container.AccessControlList) |  | Container ACL. |
 
  <!-- end messages -->
 
diff --git a/docs/object.md b/docs/object.md
index 9e7efe6..e9248ba 100644
--- a/docs/object.md
+++ b/docs/object.md
@@ -441,10 +441,6 @@ in distributed system.
 
 
 
-| Field | Type | Label | Description |
-| ----- | ---- | ----- | ----------- |
-| Epoch | [uint64](#uint64) |  | Epoch when tombstone was created |
-
 
 <a name="object.Transform"></a>
 
diff --git a/object/types.pb.go b/object/types.pb.go
index 459e124..b5a1e78 100644
--- a/object/types.pb.go
+++ b/object/types.pb.go
@@ -390,8 +390,6 @@ func (*Header) XXX_OneofWrappers() []interface{} {
 }
 
 type Tombstone struct {
-	// Epoch when tombstone was created
-	Epoch                uint64   `protobuf:"varint,1,opt,name=Epoch,proto3" json:"Epoch,omitempty"`
 	XXX_NoUnkeyedLiteral struct{} `json:"-"`
 	XXX_unrecognized     []byte   `json:"-"`
 	XXX_sizecache        int32    `json:"-"`
@@ -426,13 +424,6 @@ func (m *Tombstone) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_Tombstone proto.InternalMessageInfo
 
-func (m *Tombstone) GetEpoch() uint64 {
-	if m != nil {
-		return m.Epoch
-	}
-	return 0
-}
-
 type SystemHeader struct {
 	// Version of the object structure
 	Version uint64 `protobuf:"varint,1,opt,name=Version,proto3" json:"Version,omitempty"`
@@ -777,62 +768,61 @@ func init() {
 func init() { proto.RegisterFile("object/types.proto", fileDescriptor_02021a1d39b1aee0) }
 
 var fileDescriptor_02021a1d39b1aee0 = []byte{
-	// 867 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0x55, 0x4d, 0x73, 0xdb, 0x44,
-	0x18, 0x96, 0x64, 0xf9, 0xeb, 0xb5, 0xd2, 0xa8, 0x4b, 0x29, 0x1a, 0x33, 0x38, 0x41, 0xc3, 0x47,
-	0x28, 0x44, 0x19, 0x52, 0x98, 0x0e, 0x07, 0x18, 0xe2, 0x98, 0x41, 0x1e, 0x0a, 0xc9, 0x6c, 0x3e,
-	0x0e, 0xdc, 0x64, 0x6b, 0x2d, 0x8b, 0xd8, 0xbb, 0x9e, 0xdd, 0x75, 0x5b, 0xdf, 0xf9, 0x05, 0x9c,
-	0xb8, 0xf1, 0x77, 0x7a, 0xe4, 0xc8, 0xf4, 0x90, 0x61, 0xc2, 0x0f, 0xe0, 0x2f, 0x74, 0x76, 0x25,
-	0xd9, 0x92, 0xdb, 0x8b, 0x67, 0xdf, 0xe7, 0x63, 0xfd, 0xea, 0xdd, 0x67, 0x25, 0x40, 0x6c, 0xf4,
-	0x1b, 0x19, 0xcb, 0x23, 0xb9, 0x5a, 0x10, 0x11, 0x2c, 0x38, 0x93, 0x0c, 0x35, 0x32, 0xac, 0xeb,
-	0x72, 0x32, 0x11, 0x65, 0xa6, 0xfb, 0x8e, 0x20, 0x42, 0xa4, 0x8c, 0x56, 0x40, 0x4f, 0x48, 0xc6,
-	0xa3, 0x84, 0x24, 0x9c, 0x2d, 0x17, 0x15, 0xe6, 0x30, 0x49, 0xe5, 0x74, 0x39, 0x0a, 0xc6, 0x6c,
-	0x7e, 0x94, 0xb0, 0x84, 0x1d, 0x69, 0x78, 0xb4, 0x9c, 0xe8, 0x4a, 0x17, 0x7a, 0x95, 0xc9, 0xfd,
-	0x27, 0x50, 0xc7, 0x11, 0x4d, 0x08, 0x7a, 0x08, 0x8d, 0xb3, 0xc9, 0x44, 0x10, 0xe9, 0x99, 0xfb,
-	0xe6, 0x81, 0x8d, 0xf3, 0x4a, 0xe1, 0x4f, 0x09, 0x4d, 0xe4, 0xd4, 0xb3, 0x32, 0x3c, 0xab, 0xfc,
-	0xaf, 0x00, 0xae, 0x04, 0xe1, 0x21, 0x89, 0x62, 0xc2, 0x91, 0x0b, 0xb5, 0x9f, 0xc8, 0x4a, 0x5b,
-	0xdb, 0x58, 0x2d, 0xd1, 0x03, 0xa8, 0x5f, 0x47, 0xb3, 0x25, 0xd1, 0xb6, 0x36, 0xce, 0x0a, 0xff,
-	0x77, 0x1b, 0x1a, 0xb9, 0xc5, 0x07, 0xfb, 0x69, 0x4a, 0x6f, 0xb4, 0xa7, 0x73, 0xec, 0x04, 0xd9,
-	0x00, 0x02, 0x85, 0x85, 0x06, 0xd6, 0x1c, 0xfa, 0x1c, 0x5a, 0x98, 0xc4, 0x29, 0x27, 0x63, 0xa9,
-	0xf7, 0xe9, 0x1c, 0xef, 0x04, 0x6a, 0x40, 0xc1, 0x49, 0x1c, 0x73, 0x22, 0x44, 0x68, 0xe0, 0xb5,
-	0x00, 0x55, 0x3a, 0xf2, 0x6a, 0x5a, 0x8e, 0x8a, 0x6d, 0x37, 0x4c, 0x68, 0xe0, 0x72, 0xe7, 0x5f,
-	0x42, 0xfb, 0x92, 0x47, 0x54, 0x4c, 0x18, 0x9f, 0x7b, 0xb6, 0x36, 0xdd, 0x2f, 0x4c, 0x6b, 0x22,
-	0x34, 0xf0, 0x46, 0xa5, 0x2d, 0x6c, 0x3e, 0x12, 0x92, 0x51, 0xe2, 0xd5, 0xb7, 0x2c, 0x05, 0xa1,
-	0x2d, 0x45, 0x81, 0xbe, 0x86, 0xc6, 0x35, 0xe1, 0xe9, 0x64, 0xe5, 0x35, 0xb4, 0xfe, 0xfd, 0x20,
-	0x3f, 0xd5, 0x40, 0xc3, 0xe9, 0x38, 0x92, 0x29, 0xa3, 0xeb, 0x06, 0x73, 0x31, 0xfa, 0x04, 0x5a,
-	0x21, 0x9b, 0xb3, 0x30, 0x12, 0x53, 0xaf, 0xb9, 0x6f, 0x1e, 0x38, 0xfd, 0xd6, 0xab, 0xdb, 0x3d,
-	0x5b, 0xd5, 0xea, 0xd1, 0x0b, 0x0e, 0x3d, 0x82, 0xdd, 0xf3, 0x68, 0x35, 0x63, 0x51, 0x7c, 0x3a,
-	0x25, 0xe3, 0x1b, 0xb1, 0x9c, 0x7b, 0x2d, 0x25, 0x0f, 0x0d, 0xbc, 0x4d, 0xa0, 0x27, 0xd0, 0x1e,
-	0x52, 0x49, 0x12, 0x9e, 0xca, 0x95, 0xd7, 0xd6, 0xdd, 0xbc, 0x57, 0x74, 0xbf, 0x26, 0xd6, 0x9d,
-	0x6c, 0xb4, 0xe8, 0x7b, 0x70, 0x2e, 0xb2, 0xd4, 0xfd, 0xa8, 0x52, 0xe7, 0x81, 0xf6, 0x76, 0x83,
-	0x72, 0x14, 0x83, 0xb2, 0x22, 0x34, 0x70, 0xc5, 0xd1, 0x6f, 0xe6, 0x99, 0xf0, 0x3f, 0x2c, 0x4d,
-	0x50, 0x25, 0xe5, 0x87, 0x05, 0x1b, 0x4f, 0xf3, 0xe0, 0x65, 0x85, 0xff, 0xbf, 0x09, 0xce, 0xc5,
-	0x4a, 0x48, 0x32, 0xcf, 0x0f, 0xca, 0x83, 0xe6, 0x35, 0xe1, 0x6a, 0x66, 0xb9, 0xb0, 0x28, 0xd1,
-	0x47, 0xb0, 0x93, 0x3f, 0x64, 0x25, 0xa9, 0x55, 0x10, 0x75, 0xc1, 0x1a, 0x0e, 0x74, 0x2c, 0x9c,
-	0x3e, 0xbc, 0xbc, 0xdd, 0x33, 0x5e, 0xdd, 0xee, 0x59, 0xc3, 0x01, 0xb6, 0x86, 0x03, 0xf4, 0x19,
-	0x34, 0xcf, 0x9e, 0x53, 0xc2, 0x87, 0x03, 0x1d, 0x01, 0xa7, 0xbf, 0x9b, 0x0b, 0x0a, 0x18, 0x17,
-	0x0b, 0xf4, 0x01, 0xd4, 0x4e, 0x87, 0x03, 0x7d, 0xec, 0x4e, 0xbf, 0x93, 0xcb, 0x14, 0x84, 0xd5,
-	0x0f, 0xfa, 0x06, 0xda, 0xa7, 0x9c, 0x44, 0x92, 0xc4, 0x27, 0x32, 0x3f, 0xeb, 0x77, 0x8b, 0xe9,
-	0x6a, 0x22, 0x65, 0xf4, 0x9c, 0xa5, 0x54, 0xf6, 0x6d, 0xe5, 0xc5, 0x1b, 0xb5, 0x7f, 0x02, 0x3b,
-	0x15, 0x05, 0xea, 0x42, 0xeb, 0x8a, 0xa6, 0x2f, 0x2e, 0xd3, 0x39, 0xd1, 0x8f, 0x5c, 0xc3, 0xeb,
-	0x7a, 0x33, 0x34, 0xab, 0x3c, 0xb4, 0x14, 0x76, 0xb7, 0x8e, 0x10, 0x1d, 0xc0, 0x6e, 0xb6, 0x12,
-	0xeb, 0x68, 0xa8, 0xbd, 0x1c, 0xbc, 0x0d, 0xa3, 0x2f, 0xe0, 0x7e, 0xb1, 0xbe, 0x48, 0x13, 0x1a,
-	0xc9, 0x25, 0xcf, 0x6e, 0xaf, 0x83, 0xdf, 0x24, 0xfc, 0xbf, 0xcc, 0xec, 0xfe, 0xa2, 0x8f, 0xc1,
-	0x56, 0xef, 0x1f, 0xbd, 0xeb, 0xbd, 0xcd, 0x45, 0x50, 0x5c, 0x70, 0xb9, 0x5a, 0x10, 0xac, 0xe9,
-	0x7c, 0xfc, 0xd6, 0xdb, 0xc6, 0xef, 0x5f, 0x82, 0xad, 0x94, 0xa8, 0x03, 0xcd, 0x2b, 0x7a, 0x43,
-	0xd9, 0x73, 0xea, 0x1a, 0x08, 0xa0, 0x71, 0x1e, 0x71, 0x42, 0xa5, 0x6b, 0x22, 0x07, 0x5a, 0xe7,
-	0x9c, 0x3c, 0x4b, 0xd9, 0x52, 0xb8, 0x16, 0x6a, 0x81, 0xfd, 0x0b, 0x79, 0x21, 0xdd, 0x1a, 0x6a,
-	0x43, 0xfd, 0x74, 0x9a, 0xce, 0x62, 0xd7, 0x46, 0x6e, 0x35, 0x9d, 0x6e, 0xdd, 0x9f, 0x95, 0x6e,
-	0x36, 0x7a, 0x54, 0xe9, 0xf2, 0xe1, 0x1b, 0x37, 0xbc, 0xd4, 0xaa, 0xff, 0xf8, 0x6d, 0xed, 0xb4,
-	0xa1, 0x7e, 0xb1, 0x98, 0xa5, 0xaa, 0x9b, 0x16, 0xd8, 0x6a, 0x0e, 0xae, 0xa5, 0xc0, 0x9f, 0xd9,
-	0x72, 0x16, 0xbb, 0x35, 0xff, 0x0f, 0x13, 0x1a, 0x67, 0x7a, 0x53, 0xf4, 0x5d, 0x35, 0xb9, 0xf9,
-	0x1b, 0xee, 0x41, 0xf1, 0x9f, 0x65, 0x2e, 0x4f, 0x41, 0x35, 0xe9, 0x01, 0x34, 0xf3, 0xb3, 0xf1,
-	0xac, 0xfd, 0xda, 0x41, 0xe7, 0xf8, 0x5e, 0x61, 0xad, 0x98, 0x0a, 0x91, 0xba, 0x19, 0x79, 0xd4,
-	0xb3, 0x78, 0xe3, 0xa2, 0xec, 0x7f, 0xfb, 0xf2, 0xae, 0x67, 0xfe, 0x7d, 0xd7, 0x33, 0xff, 0xb9,
-	0xeb, 0x99, 0xff, 0xde, 0xf5, 0xcc, 0x3f, 0xff, 0xeb, 0x19, 0xbf, 0x7e, 0x5a, 0xfa, 0x44, 0x50,
-	0xb1, 0x18, 0x8f, 0x0f, 0x63, 0xf2, 0xec, 0x88, 0x12, 0x36, 0x11, 0x87, 0xd9, 0x07, 0x22, 0xfb,
-	0xbb, 0x51, 0x43, 0x57, 0x8f, 0x5f, 0x07, 0x00, 0x00, 0xff, 0xff, 0x40, 0x7d, 0xa2, 0x84, 0xb1,
-	0x06, 0x00, 0x00,
+	// 863 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0x55, 0xcb, 0x8e, 0xe3, 0x44,
+	0x14, 0xb5, 0x13, 0xe7, 0x75, 0xe3, 0x99, 0xf6, 0x14, 0xc3, 0x60, 0x05, 0x91, 0x6e, 0x59, 0x3c,
+	0x9a, 0x81, 0x76, 0x8b, 0x1e, 0xd0, 0x88, 0x05, 0x88, 0x4e, 0x07, 0xe1, 0x88, 0x81, 0x6e, 0x55,
+	0x3f, 0x16, 0xec, 0x9c, 0xb8, 0xe2, 0x14, 0x9d, 0x54, 0x45, 0x55, 0x95, 0x99, 0xc9, 0x9e, 0x2f,
+	0x60, 0xc5, 0x8e, 0xdf, 0x99, 0x25, 0x4b, 0x34, 0x8b, 0x16, 0x6a, 0x3e, 0x80, 0x5f, 0x40, 0x55,
+	0xb6, 0x13, 0xbb, 0x67, 0x36, 0x56, 0xdd, 0x7b, 0xce, 0x29, 0xdf, 0xba, 0xf7, 0x94, 0x0d, 0x88,
+	0x8f, 0x7f, 0x25, 0x13, 0x75, 0xa8, 0xd6, 0x4b, 0x22, 0xc3, 0xa5, 0xe0, 0x8a, 0xa3, 0x66, 0x96,
+	0xeb, 0x79, 0x82, 0x4c, 0x65, 0x19, 0xe9, 0xbd, 0x23, 0x89, 0x94, 0x94, 0xb3, 0x4a, 0xd2, 0x97,
+	0x8a, 0x8b, 0x38, 0x25, 0xa9, 0xe0, 0xab, 0x65, 0x05, 0x39, 0x48, 0xa9, 0x9a, 0xad, 0xc6, 0xe1,
+	0x84, 0x2f, 0x0e, 0x53, 0x9e, 0xf2, 0x43, 0x93, 0x1e, 0xaf, 0xa6, 0x26, 0x32, 0x81, 0x59, 0x65,
+	0xf4, 0xe0, 0x29, 0x34, 0x70, 0xcc, 0x52, 0x82, 0x1e, 0x41, 0xf3, 0x74, 0x3a, 0x95, 0x44, 0xf9,
+	0xf6, 0x9e, 0xbd, 0xef, 0xe0, 0x3c, 0xd2, 0xf9, 0x67, 0x84, 0xa5, 0x6a, 0xe6, 0xd7, 0xb2, 0x7c,
+	0x16, 0x05, 0x5f, 0x02, 0x5c, 0x4a, 0x22, 0x22, 0x12, 0x27, 0x44, 0x20, 0x0f, 0xea, 0x3f, 0x92,
+	0xb5, 0x91, 0x76, 0xb0, 0x5e, 0xa2, 0x87, 0xd0, 0xb8, 0x8a, 0xe7, 0x2b, 0x62, 0x64, 0x1d, 0x9c,
+	0x05, 0xc1, 0x6f, 0x0e, 0x34, 0x73, 0x49, 0x00, 0xce, 0x33, 0xca, 0xae, 0x8d, 0xa6, 0x7b, 0xe4,
+	0x86, 0x59, 0x03, 0x42, 0x9d, 0x8b, 0x2c, 0x6c, 0x30, 0xf4, 0x19, 0xb4, 0x31, 0x49, 0xa8, 0x20,
+	0x13, 0x65, 0xf6, 0xe9, 0x1e, 0xdd, 0x0b, 0x75, 0x83, 0xc2, 0xe3, 0x24, 0x11, 0x44, 0xca, 0xc8,
+	0xc2, 0x1b, 0x02, 0xaa, 0x54, 0xe4, 0xd7, 0x0d, 0x1d, 0x15, 0xdb, 0x6e, 0x91, 0xc8, 0xc2, 0xe5,
+	0xca, 0xbf, 0x80, 0xce, 0x85, 0x88, 0x99, 0x9c, 0x72, 0xb1, 0xf0, 0x1d, 0x23, 0x7a, 0x50, 0x88,
+	0x36, 0x40, 0x64, 0xe1, 0x2d, 0xcb, 0x48, 0xf8, 0x62, 0x2c, 0x15, 0x67, 0xc4, 0x6f, 0xdc, 0x91,
+	0x14, 0x80, 0x91, 0x14, 0x01, 0xfa, 0x0a, 0x9a, 0x57, 0x44, 0xd0, 0xe9, 0xda, 0x6f, 0x1a, 0xfe,
+	0xfb, 0x61, 0x3e, 0xd5, 0xd0, 0xa4, 0xe9, 0x24, 0x56, 0x94, 0xb3, 0x4d, 0x81, 0x39, 0x19, 0x7d,
+	0x0c, 0xed, 0x88, 0x2f, 0x78, 0x14, 0xcb, 0x99, 0xdf, 0xda, 0xb3, 0xf7, 0xdd, 0x41, 0xfb, 0xf5,
+	0xcd, 0xae, 0xa3, 0x63, 0x7d, 0xf4, 0x02, 0x43, 0x8f, 0x61, 0xe7, 0x2c, 0x5e, 0xcf, 0x79, 0x9c,
+	0x9c, 0xcc, 0xc8, 0xe4, 0x5a, 0xae, 0x16, 0x7e, 0x5b, 0xd3, 0x23, 0x0b, 0xdf, 0x05, 0xd0, 0x53,
+	0xe8, 0x8c, 0x98, 0x22, 0xa9, 0xa0, 0x6a, 0xed, 0x77, 0x4c, 0x35, 0xef, 0x15, 0xd5, 0x6f, 0x80,
+	0x4d, 0x25, 0x5b, 0x2e, 0xfa, 0x0e, 0xdc, 0xf3, 0xcc, 0x75, 0x3f, 0x68, 0xd7, 0xf9, 0x60, 0xb4,
+	0xbd, 0xb0, 0x6c, 0xc5, 0xb0, 0xcc, 0x88, 0x2c, 0x5c, 0x51, 0x0c, 0x5a, 0xb9, 0x27, 0x82, 0x6e,
+	0xa9, 0x83, 0xc1, 0x7f, 0x36, 0xb8, 0xe7, 0x6b, 0xa9, 0xc8, 0x22, 0x1f, 0x89, 0x0f, 0xad, 0x2b,
+	0x22, 0x74, 0x77, 0x72, 0x2f, 0x16, 0x21, 0xfa, 0x10, 0xee, 0xe5, 0xc7, 0xa9, 0x78, 0xb2, 0x9a,
+	0x44, 0x3d, 0xa8, 0x8d, 0x86, 0xc6, 0x00, 0xee, 0x00, 0x5e, 0xdd, 0xec, 0x5a, 0xaf, 0x6f, 0x76,
+	0x6b, 0xa3, 0x21, 0xae, 0x8d, 0x86, 0xe8, 0x53, 0x68, 0x9d, 0xbe, 0x60, 0x44, 0x8c, 0x86, 0x66,
+	0xd8, 0xee, 0x60, 0x27, 0x27, 0x14, 0x69, 0x5c, 0x2c, 0xd0, 0x07, 0x50, 0x3f, 0x19, 0x0d, 0xcd,
+	0x80, 0xdd, 0x41, 0x37, 0xa7, 0xe9, 0x14, 0xd6, 0x0f, 0xf4, 0x35, 0x74, 0x4e, 0x04, 0x89, 0x15,
+	0x49, 0x8e, 0x55, 0x3e, 0xd5, 0x77, 0x8b, 0x3e, 0x1a, 0x80, 0x72, 0x76, 0xc6, 0x29, 0x53, 0x03,
+	0x47, 0x6b, 0xf1, 0x96, 0x1d, 0x1c, 0xc3, 0xbd, 0x0a, 0x03, 0xf5, 0xa0, 0x7d, 0xc9, 0xe8, 0xcb,
+	0x0b, 0xba, 0x20, 0xe6, 0xc8, 0x75, 0xbc, 0x89, 0xf5, 0x45, 0xfa, 0x7e, 0xc9, 0x27, 0xc5, 0x59,
+	0xb3, 0x20, 0xa0, 0xb0, 0x73, 0x67, 0x58, 0x68, 0x1f, 0x76, 0xb2, 0x95, 0xdc, 0x98, 0x40, 0xef,
+	0xe5, 0xe2, 0xbb, 0x69, 0xf4, 0x39, 0x3c, 0x28, 0xd6, 0xe7, 0x34, 0x65, 0xb1, 0x5a, 0x89, 0xec,
+	0x9e, 0xba, 0xf8, 0x4d, 0x20, 0xf8, 0xd3, 0xce, 0x6e, 0x2a, 0xfa, 0x08, 0x1c, 0xfd, 0xa5, 0x31,
+	0xbb, 0xde, 0xdf, 0x5a, 0x5e, 0x63, 0xe1, 0xc5, 0x7a, 0x49, 0xb0, 0x81, 0xf3, 0xf6, 0xd7, 0xde,
+	0xd6, 0xfe, 0xe0, 0x02, 0x1c, 0xcd, 0x44, 0x5d, 0x68, 0x5d, 0xb2, 0x6b, 0xc6, 0x5f, 0x30, 0xcf,
+	0x42, 0x00, 0xcd, 0xb3, 0x58, 0x10, 0xa6, 0x3c, 0x1b, 0xb9, 0xd0, 0x3e, 0x13, 0xe4, 0x39, 0xe5,
+	0x2b, 0xe9, 0xd5, 0x50, 0x1b, 0x9c, 0x9f, 0xc9, 0x4b, 0xe5, 0xd5, 0x51, 0x07, 0x1a, 0x27, 0x33,
+	0x3a, 0x4f, 0x3c, 0x07, 0x79, 0x55, 0x1f, 0x7a, 0x8d, 0x60, 0x5e, 0xba, 0xc3, 0xe8, 0x71, 0xa5,
+	0xca, 0x47, 0x6f, 0xdc, 0xe5, 0x52, 0xa9, 0xc1, 0x93, 0xb7, 0x95, 0xd3, 0x81, 0xc6, 0xf9, 0x72,
+	0x4e, 0x75, 0x35, 0x6d, 0x70, 0x74, 0x1f, 0xbc, 0x9a, 0x4e, 0xfe, 0xc4, 0x57, 0xf3, 0xc4, 0xab,
+	0x07, 0xbf, 0xdb, 0xd0, 0x3c, 0x35, 0x9b, 0xa2, 0x6f, 0xab, 0xce, 0xcd, 0xbf, 0x65, 0x0f, 0x8b,
+	0x77, 0x96, 0xb1, 0xdc, 0x05, 0x55, 0xa7, 0x87, 0xd0, 0xca, 0x67, 0xe3, 0xd7, 0xf6, 0xea, 0xfb,
+	0xdd, 0xa3, 0xfb, 0x85, 0xb4, 0x22, 0x2a, 0x48, 0xfa, 0x66, 0xe4, 0x56, 0xcf, 0xec, 0x8d, 0x8b,
+	0x70, 0xf0, 0xcd, 0xab, 0xdb, 0xbe, 0xfd, 0xd7, 0x6d, 0xdf, 0xfe, 0xfb, 0xb6, 0x6f, 0xff, 0x73,
+	0xdb, 0xb7, 0xff, 0xf8, 0xb7, 0x6f, 0xfd, 0xf2, 0x49, 0xe9, 0x67, 0xc0, 0xe4, 0x72, 0x32, 0x39,
+	0x48, 0xc8, 0xf3, 0x43, 0x46, 0xf8, 0x54, 0x1e, 0x64, 0xbf, 0x82, 0xec, 0x75, 0xe3, 0xa6, 0x89,
+	0x9e, 0xfc, 0x1f, 0x00, 0x00, 0xff, 0xff, 0x06, 0x20, 0x25, 0xf2, 0x9b, 0x06, 0x00, 0x00,
 }
 
 func (m *Range) Marshal() (dAtA []byte, err error) {
@@ -1176,11 +1166,6 @@ func (m *Tombstone) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
-	if m.Epoch != 0 {
-		i = encodeVarintTypes(dAtA, i, uint64(m.Epoch))
-		i--
-		dAtA[i] = 0x8
-	}
 	return len(dAtA) - i, nil
 }
 
@@ -1659,9 +1644,6 @@ func (m *Tombstone) Size() (n int) {
 	}
 	var l int
 	_ = l
-	if m.Epoch != 0 {
-		n += 1 + sovTypes(uint64(m.Epoch))
-	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -2436,25 +2418,6 @@ func (m *Tombstone) Unmarshal(dAtA []byte) error {
 			return fmt.Errorf("proto: Tombstone: illegal tag %d (wire type %d)", fieldNum, wire)
 		}
 		switch fieldNum {
-		case 1:
-			if wireType != 0 {
-				return fmt.Errorf("proto: wrong wireType = %d for field Epoch", wireType)
-			}
-			m.Epoch = 0
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowTypes
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				m.Epoch |= uint64(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
 		default:
 			iNdEx = preIndex
 			skippy, err := skipTypes(dAtA[iNdEx:])
diff --git a/object/types.proto b/object/types.proto
index d2bbaab..8f50f76 100644
--- a/object/types.proto
+++ b/object/types.proto
@@ -48,10 +48,7 @@ message Header {
     }
 }
 
-message Tombstone {
-    // Epoch when tombstone was created
-    uint64 Epoch = 1;
-}
+message Tombstone {}
 
 message SystemHeader {
     // Version of the object structure