diff --git a/object/types.go b/object/types.go
index f433b9c..79cef65 100644
--- a/object/types.go
+++ b/object/types.go
@@ -67,6 +67,8 @@ const (
 	IntegrityHdr
 	// StorageGroupHdr is a storage group header type.
 	StorageGroupHdr
+	// PublicKeyHdr is a public key header type.
+	PublicKeyHdr
 )
 
 var (
@@ -140,6 +142,8 @@ func (m Header) typeOf(t isHeader_Value) (ok bool) {
 		_, ok = m.Value.(*Header_Integrity)
 	case *Header_StorageGroup:
 		_, ok = m.Value.(*Header_StorageGroup)
+	case *Header_PublicKey:
+		_, ok = m.Value.(*Header_PublicKey)
 	}
 	return
 }
@@ -168,6 +172,8 @@ func HeaderType(t headerType) Pred {
 		return func(h *Header) bool { _, ok := h.Value.(*Header_Integrity); return ok }
 	case StorageGroupHdr:
 		return func(h *Header) bool { _, ok := h.Value.(*Header_StorageGroup); return ok }
+	case PublicKeyHdr:
+		return func(h *Header) bool { _, ok := h.Value.(*Header_PublicKey); return ok }
 	default:
 		return nil
 	}
diff --git a/object/types.pb.go b/object/types.pb.go
index b5a1e78..525b39b 100644
--- a/object/types.pb.go
+++ b/object/types.pb.go
@@ -220,6 +220,7 @@ type Header struct {
 	//	*Header_PayloadChecksum
 	//	*Header_Integrity
 	//	*Header_StorageGroup
+	//	*Header_PublicKey
 	Value                isHeader_Value `protobuf_oneof:"Value"`
 	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
 	XXX_unrecognized     []byte         `json:"-"`
@@ -291,6 +292,9 @@ type Header_Integrity struct {
 type Header_StorageGroup struct {
 	StorageGroup *storagegroup.StorageGroup `protobuf:"bytes,10,opt,name=StorageGroup,proto3,oneof" json:"StorageGroup,omitempty"`
 }
+type Header_PublicKey struct {
+	PublicKey *PublicKey `protobuf:"bytes,11,opt,name=PublicKey,proto3,oneof" json:"PublicKey,omitempty"`
+}
 
 func (*Header_Link) isHeader_Value()            {}
 func (*Header_Redirect) isHeader_Value()        {}
@@ -302,6 +306,7 @@ func (*Header_HomoHash) isHeader_Value()        {}
 func (*Header_PayloadChecksum) isHeader_Value() {}
 func (*Header_Integrity) isHeader_Value()       {}
 func (*Header_StorageGroup) isHeader_Value()    {}
+func (*Header_PublicKey) isHeader_Value()       {}
 
 func (m *Header) GetValue() isHeader_Value {
 	if m != nil {
@@ -373,6 +378,13 @@ func (m *Header) GetStorageGroup() *storagegroup.StorageGroup {
 	return nil
 }
 
+func (m *Header) GetPublicKey() *PublicKey {
+	if x, ok := m.GetValue().(*Header_PublicKey); ok {
+		return x.PublicKey
+	}
+	return nil
+}
+
 // XXX_OneofWrappers is for the internal use of the proto package.
 func (*Header) XXX_OneofWrappers() []interface{} {
 	return []interface{}{
@@ -386,6 +398,7 @@ func (*Header) XXX_OneofWrappers() []interface{} {
 		(*Header_PayloadChecksum)(nil),
 		(*Header_Integrity)(nil),
 		(*Header_StorageGroup)(nil),
+		(*Header_PublicKey)(nil),
 	}
 }
 
@@ -750,6 +763,50 @@ func (m *Object) GetPayload() []byte {
 	return nil
 }
 
+type PublicKey struct {
+	// Value contains marshaled ecdsa public key
+	Value                []byte   `protobuf:"bytes,1,opt,name=Value,proto3" json:"Value,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *PublicKey) Reset()         { *m = PublicKey{} }
+func (m *PublicKey) String() string { return proto.CompactTextString(m) }
+func (*PublicKey) ProtoMessage()    {}
+func (*PublicKey) Descriptor() ([]byte, []int) {
+	return fileDescriptor_02021a1d39b1aee0, []int{10}
+}
+func (m *PublicKey) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *PublicKey) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	b = b[:cap(b)]
+	n, err := m.MarshalToSizedBuffer(b)
+	if err != nil {
+		return nil, err
+	}
+	return b[:n], nil
+}
+func (m *PublicKey) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_PublicKey.Merge(m, src)
+}
+func (m *PublicKey) XXX_Size() int {
+	return m.Size()
+}
+func (m *PublicKey) XXX_DiscardUnknown() {
+	xxx_messageInfo_PublicKey.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_PublicKey proto.InternalMessageInfo
+
+func (m *PublicKey) GetValue() []byte {
+	if m != nil {
+		return m.Value
+	}
+	return nil
+}
+
 func init() {
 	proto.RegisterEnum("object.Link_Type", Link_Type_name, Link_Type_value)
 	proto.RegisterEnum("object.Transform_Type", Transform_Type_name, Transform_Type_value)
@@ -763,66 +820,69 @@ func init() {
 	proto.RegisterType((*Link)(nil), "object.Link")
 	proto.RegisterType((*Transform)(nil), "object.Transform")
 	proto.RegisterType((*Object)(nil), "object.Object")
+	proto.RegisterType((*PublicKey)(nil), "object.PublicKey")
 }
 
 func init() { proto.RegisterFile("object/types.proto", fileDescriptor_02021a1d39b1aee0) }
 
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+	0x60, 0xf2, 0xe1, 0xf4, 0x77, 0x53, 0x41, 0x56, 0xc6, 0xd9, 0x02, 0x7d, 0x00, 0xb5, 0xd3, 0xd1,
+	0xc0, 0x64, 0xc2, 0xe9, 0x77, 0x52, 0x99, 0x2e, 0x61, 0xfd, 0x83, 0xbe, 0x81, 0xf6, 0xa9, 0x20,
+	0xa1, 0x22, 0xb3, 0x13, 0x95, 0x06, 0xe1, 0xdd, 0xec, 0xf9, 0x0d, 0x41, 0x39, 0x1b, 0x73, 0xca,
+	0x54, 0xdf, 0xd6, 0x5e, 0xbc, 0x55, 0xfb, 0x27, 0xb0, 0x53, 0x52, 0xa0, 0x2e, 0xb4, 0x2e, 0x19,
+	0x7d, 0x71, 0x41, 0x57, 0xc4, 0x3c, 0x72, 0x0d, 0xe7, 0x58, 0xdf, 0xbd, 0x1f, 0xd6, 0x7c, 0x9a,
+	0x3d, 0x6b, 0x02, 0x7c, 0x0a, 0xbb, 0x77, 0xce, 0x17, 0x1d, 0xc0, 0x6e, 0xb2, 0x92, 0x79, 0x6e,
+	0xf4, 0x5e, 0x0e, 0xbe, 0x5b, 0x46, 0x5f, 0xc0, 0xfd, 0x6c, 0x7d, 0x4e, 0x23, 0x16, 0xaa, 0x58,
+	0x24, 0x57, 0xdb, 0xc1, 0x6f, 0x12, 0xfe, 0x9f, 0x56, 0x72, 0xb9, 0xd1, 0xc7, 0x60, 0xeb, 0x97,
+	0x93, 0xd9, 0xf5, 0xde, 0xf6, 0xb0, 0x35, 0x17, 0x5c, 0x6c, 0xd6, 0x04, 0x1b, 0x3a, 0x1d, 0x7f,
+	0xf5, 0x6d, 0xe3, 0xf7, 0x2f, 0xc0, 0xd6, 0x4a, 0xd4, 0x81, 0xe6, 0x25, 0xbb, 0x66, 0xfc, 0x39,
+	0x73, 0x2b, 0x08, 0xa0, 0x31, 0x0e, 0x05, 0x61, 0xca, 0xb5, 0x90, 0x03, 0xad, 0xb1, 0x20, 0xcf,
+	0x28, 0x8f, 0xa5, 0x5b, 0x45, 0x2d, 0xb0, 0x7f, 0x21, 0x2f, 0x94, 0x5b, 0x43, 0x6d, 0xa8, 0x9f,
+	0x2e, 0xe8, 0x72, 0xe6, 0xda, 0xc8, 0x2d, 0x47, 0xd7, 0xad, 0xfb, 0xcb, 0xc2, 0xb5, 0x47, 0x8f,
+	0x4a, 0x5d, 0x3e, 0x7c, 0xe3, 0xfa, 0x17, 0x5a, 0xf5, 0x1f, 0xbf, 0xad, 0x9d, 0x36, 0xd4, 0xcf,
+	0xd7, 0x4b, 0xaa, 0xbb, 0x69, 0x81, 0xad, 0xe7, 0xe0, 0x56, 0x75, 0xf1, 0x67, 0x1e, 0x2f, 0x67,
+	0x6e, 0xcd, 0xff, 0xdd, 0x82, 0xc6, 0x99, 0xd9, 0x14, 0x7d, 0x57, 0x4e, 0x6e, 0xfa, 0xfa, 0x7b,
+	0x90, 0xfd, 0x67, 0x91, 0x4b, 0x53, 0x50, 0x4e, 0x7a, 0x00, 0xcd, 0xf4, 0x6c, 0xbc, 0xea, 0x7e,
+	0xed, 0xa0, 0x73, 0x7c, 0x2f, 0xb3, 0x96, 0x4c, 0x99, 0x48, 0xdf, 0x8c, 0x34, 0xea, 0x49, 0xbc,
+	0x71, 0x06, 0xfd, 0x0f, 0x0b, 0xb7, 0x71, 0xfb, 0xba, 0x4e, 0xce, 0x3f, 0x01, 0xfd, 0x6f, 0x5f,
+	0xde, 0xf6, 0xac, 0xbf, 0x6f, 0x7b, 0xd6, 0x3f, 0xb7, 0x3d, 0xeb, 0xdf, 0xdb, 0x9e, 0xf5, 0xc7,
+	0x7f, 0xbd, 0xca, 0xaf, 0x9f, 0x16, 0x3e, 0x31, 0x4c, 0xae, 0xa7, 0xd3, 0xc3, 0x19, 0x79, 0x76,
+	0xc4, 0x08, 0x9f, 0xcb, 0xc3, 0xe4, 0x03, 0x93, 0x74, 0x34, 0x69, 0x18, 0xf4, 0xf8, 0x75, 0x00,
+	0x00, 0x00, 0xff, 0xff, 0x95, 0x5d, 0xc3, 0x1e, 0xf1, 0x06, 0x00, 0x00,
 }
 
 func (m *Range) Marshal() (dAtA []byte, err error) {
@@ -1142,6 +1202,27 @@ func (m *Header_StorageGroup) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	}
 	return len(dAtA) - i, nil
 }
+func (m *Header_PublicKey) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *Header_PublicKey) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	if m.PublicKey != nil {
+		{
+			size, err := m.PublicKey.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintTypes(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x5a
+	}
+	return len(dAtA) - i, nil
+}
 func (m *Tombstone) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -1456,6 +1537,40 @@ func (m *Object) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *PublicKey) 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 *PublicKey) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *PublicKey) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.XXX_unrecognized != nil {
+		i -= len(m.XXX_unrecognized)
+		copy(dAtA[i:], m.XXX_unrecognized)
+	}
+	if len(m.Value) > 0 {
+		i -= len(m.Value)
+		copy(dAtA[i:], m.Value)
+		i = encodeVarintTypes(dAtA, i, uint64(len(m.Value)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
 func encodeVarintTypes(dAtA []byte, offset int, v uint64) int {
 	offset -= sovTypes(v)
 	base := offset
@@ -1638,6 +1753,18 @@ func (m *Header_StorageGroup) Size() (n int) {
 	}
 	return n
 }
+func (m *Header_PublicKey) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.PublicKey != nil {
+		l = m.PublicKey.Size()
+		n += 1 + l + sovTypes(uint64(l))
+	}
+	return n
+}
 func (m *Tombstone) Size() (n int) {
 	if m == nil {
 		return 0
@@ -1770,6 +1897,22 @@ func (m *Object) Size() (n int) {
 	return n
 }
 
+func (m *PublicKey) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.Value)
+	if l > 0 {
+		n += 1 + l + sovTypes(uint64(l))
+	}
+	if m.XXX_unrecognized != nil {
+		n += len(m.XXX_unrecognized)
+	}
+	return n
+}
+
 func sovTypes(x uint64) (n int) {
 	return (math_bits.Len64(x|1) + 6) / 7
 }
@@ -2364,6 +2507,41 @@ func (m *Header) Unmarshal(dAtA []byte) error {
 			}
 			m.Value = &Header_StorageGroup{v}
 			iNdEx = postIndex
+		case 11:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field PublicKey", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTypes
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthTypes
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthTypes
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			v := &PublicKey{}
+			if err := v.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			m.Value = &Header_PublicKey{v}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipTypes(dAtA[iNdEx:])
@@ -3215,6 +3393,94 @@ func (m *Object) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *PublicKey) 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 ErrIntOverflowTypes
+			}
+			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: PublicKey: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: PublicKey: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Value", wireType)
+			}
+			var byteLen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTypes
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				byteLen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if byteLen < 0 {
+				return ErrInvalidLengthTypes
+			}
+			postIndex := iNdEx + byteLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTypes
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Value = append(m.Value[:0], dAtA[iNdEx:postIndex]...)
+			if m.Value == nil {
+				m.Value = []byte{}
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTypes(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthTypes
+			}
+			if (iNdEx + skippy) < 0 {
+				return ErrInvalidLengthTypes
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.XXX_unrecognized = append(m.XXX_unrecognized, dAtA[iNdEx:iNdEx+skippy]...)
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func skipTypes(dAtA []byte) (n int, err error) {
 	l := len(dAtA)
 	iNdEx := 0
diff --git a/object/types.proto b/object/types.proto
index 8f50f76..293f347 100644
--- a/object/types.proto
+++ b/object/types.proto
@@ -45,6 +45,8 @@ message Header {
         IntegrityHeader Integrity              = 9;
         // StorageGroup contains meta information for the data audit
         storagegroup.StorageGroup StorageGroup = 10;
+        // PublicKey of owner of the object. Key is used for verification and can be based on NeoID or x509 cert.
+        PublicKey PublicKey                    = 11;
     }
 }
 
@@ -122,3 +124,8 @@ message Object {
     // Payload is an object's payload
     bytes Payload             = 3;
 }
+
+message PublicKey {
+    // Value contains marshaled ecdsa public key
+    bytes Value = 1;
+}