diff --git a/object/extensions.go b/object/extensions.go
index 6e577bd..be755c6 100644
--- a/object/extensions.go
+++ b/object/extensions.go
@@ -19,21 +19,6 @@ func (m Object) IsLinking() bool {
 	return false
 }
 
-// VerificationHeader returns verification header if it is presented in extended headers.
-func (m Object) VerificationHeader() (*VerificationHeader, error) {
-	_, vh := m.LastHeader(HeaderType(VerifyHdr))
-	if vh == nil {
-		return nil, ErrHeaderNotFound
-	}
-	return vh.Value.(*Header_Verify).Verify, nil
-}
-
-// SetVerificationHeader sets verification header in the object.
-// It will replace existing verification header or add a new one.
-func (m *Object) SetVerificationHeader(header *VerificationHeader) {
-	m.SetHeader(&Header{Value: &Header_Verify{Verify: header}})
-}
-
 // Links returns slice of ids of specified link type
 func (m *Object) Links(t Link_Type) []ID {
 	var res []ID
diff --git a/object/service_test.go b/object/service_test.go
index 4b02b37..5b7a358 100644
--- a/object/service_test.go
+++ b/object/service_test.go
@@ -16,8 +16,8 @@ func TestRequest(t *testing.T) {
 		&DeleteRequest{},
 		&GetRangeRequest{},
 		&GetRangeHashRequest{},
-		MakePutRequestHeader(nil, nil),
-		MakePutRequestHeader(&Object{}, nil),
+		MakePutRequestHeader(nil),
+		MakePutRequestHeader(&Object{}),
 	}
 
 	types := []RequestType{
diff --git a/object/types.go b/object/types.go
index aebb2fc..83b03c7 100644
--- a/object/types.go
+++ b/object/types.go
@@ -7,7 +7,6 @@ import (
 	"github.com/gogo/protobuf/proto"
 	"github.com/nspcc-dev/neofs-api-go/internal"
 	"github.com/nspcc-dev/neofs-api-go/refs"
-	"github.com/nspcc-dev/neofs-api-go/session"
 )
 
 type (
@@ -19,9 +18,6 @@ type (
 	// Address is a type alias of object Address.
 	Address = refs.Address
 
-	// VerificationHeader is a type alias of session's verification header.
-	VerificationHeader = session.VerificationHeader
-
 	// PositionReader defines object reader that returns slice of bytes
 	// for specified object and data range.
 	PositionReader interface {
@@ -60,8 +56,8 @@ const (
 	TransformHdr
 	// TombstoneHdr is a tombstone header type.
 	TombstoneHdr
-	// VerifyHdr is a verification header type.
-	VerifyHdr
+	// TokenHdr is a token header type.
+	TokenHdr
 	// HomoHashHdr is a homomorphic hash header type.
 	HomoHashHdr
 	// PayloadChecksumHdr is a payload checksum header type.
@@ -175,8 +171,8 @@ func (m Header) typeOf(t isHeader_Value) (ok bool) {
 		_, ok = m.Value.(*Header_Transform)
 	case *Header_Tombstone:
 		_, ok = m.Value.(*Header_Tombstone)
-	case *Header_Verify:
-		_, ok = m.Value.(*Header_Verify)
+	case *Header_Token:
+		_, ok = m.Value.(*Header_Token)
 	case *Header_HomoHash:
 		_, ok = m.Value.(*Header_HomoHash)
 	case *Header_PayloadChecksum:
@@ -205,8 +201,8 @@ func HeaderType(t headerType) Pred {
 		return func(h *Header) bool { _, ok := h.Value.(*Header_Transform); return ok }
 	case TombstoneHdr:
 		return func(h *Header) bool { _, ok := h.Value.(*Header_Tombstone); return ok }
-	case VerifyHdr:
-		return func(h *Header) bool { _, ok := h.Value.(*Header_Verify); return ok }
+	case TokenHdr:
+		return func(h *Header) bool { _, ok := h.Value.(*Header_Token); return ok }
 	case HomoHashHdr:
 		return func(h *Header) bool { _, ok := h.Value.(*Header_HomoHash); return ok }
 	case PayloadChecksumHdr:
diff --git a/object/utils.go b/object/utils.go
index 07f0984..33423aa 100644
--- a/object/utils.go
+++ b/object/utils.go
@@ -4,7 +4,6 @@ import (
 	"io"
 	"strconv"
 
-	"github.com/nspcc-dev/neofs-api-go/session"
 	"github.com/pkg/errors"
 )
 
@@ -46,11 +45,10 @@ func (b ByteSize) String() string {
 
 // MakePutRequestHeader combines object and session token value
 // into header of object put request.
-func MakePutRequestHeader(obj *Object, token *session.Token) *PutRequest {
+func MakePutRequestHeader(obj *Object) *PutRequest {
 	return &PutRequest{
 		R: &PutRequest_Header{Header: &PutRequest_PutHeader{
 			Object: obj,
-			Token:  token,
 		}},
 	}
 }
diff --git a/object/verification.go b/object/verification.go
index a00b30a..5694316 100644
--- a/object/verification.go
+++ b/object/verification.go
@@ -77,7 +77,7 @@ func (m Object) Verify() error {
 	integrity := ih.Value.(*Header_Integrity).Integrity
 
 	// Prepare structures
-	_, vh := m.LastHeader(HeaderType(VerifyHdr))
+	_, vh := m.LastHeader(HeaderType(TokenHdr))
 	if vh == nil {
 		_, pkh := m.LastHeader(HeaderType(PublicKeyHdr))
 		if pkh == nil {
@@ -85,7 +85,7 @@ func (m Object) Verify() error {
 		}
 		pubkey = pkh.Value.(*Header_PublicKey).PublicKey.Value
 	} else {
-		pubkey = vh.Value.(*Header_Verify).Verify.PublicKey
+		pubkey = vh.Value.(*Header_Token).Token.SessionKey
 	}
 
 	// Verify signature
diff --git a/object/verification_test.go b/object/verification_test.go
index b37ec70..004f969 100644
--- a/object/verification_test.go
+++ b/object/verification_test.go
@@ -6,7 +6,7 @@ import (
 	"github.com/google/uuid"
 	"github.com/nspcc-dev/neofs-api-go/container"
 	"github.com/nspcc-dev/neofs-api-go/refs"
-	"github.com/nspcc-dev/neofs-api-go/session"
+	"github.com/nspcc-dev/neofs-api-go/service"
 	crypto "github.com/nspcc-dev/neofs-crypto"
 	"github.com/nspcc-dev/neofs-crypto/test"
 	"github.com/stretchr/testify/require"
@@ -77,11 +77,13 @@ func TestObject_Verify(t *testing.T) {
 
 	dataPK := crypto.MarshalPublicKey(&sessionkey.PublicKey)
 	signature, err = crypto.Sign(key, dataPK)
-	vh := &session.VerificationHeader{
-		PublicKey:    dataPK,
-		KeySignature: signature,
+	tok := &service.Token{
+		Token_Info: service.Token_Info{
+			SessionKey: dataPK,
+		},
+		Signature: signature,
 	}
-	obj.SetVerificationHeader(vh)
+	obj.AddHeader(&Header{Value: &Header_Token{Token: tok}})
 
 	// validation header is not last
 	t.Run("error validation header is not last", func(t *testing.T) {
@@ -90,7 +92,7 @@ func TestObject_Verify(t *testing.T) {
 	})
 
 	obj.Headers = obj.Headers[:len(obj.Headers)-2]
-	obj.SetVerificationHeader(vh)
+	obj.AddHeader(&Header{Value: &Header_Token{Token: tok}})
 	obj.SetHeader(&Header{Value: &Header_Integrity{ih}})
 
 	t.Run("error invalid header checksum", func(t *testing.T) {
@@ -115,7 +117,7 @@ func TestObject_Verify(t *testing.T) {
 	require.NoError(t, err)
 	obj.SetHeader(genIH)
 
-	t.Run("correct with vh", func(t *testing.T) {
+	t.Run("correct with tok", func(t *testing.T) {
 		err = obj.Verify()
 		require.NoError(t, err)
 	})
@@ -123,7 +125,7 @@ func TestObject_Verify(t *testing.T) {
 	pkh := Header{Value: &Header_PublicKey{&PublicKey{
 		Value: crypto.MarshalPublicKey(&key.PublicKey),
 	}}}
-	// replace vh with pkh
+	// replace tok with pkh
 	obj.Headers[len(obj.Headers)-2] = pkh
 	// re-sign object
 	obj.Sign(sessionkey)
diff --git a/service/alias.go b/service/alias.go
new file mode 100644
index 0000000..6c22ece
--- /dev/null
+++ b/service/alias.go
@@ -0,0 +1,14 @@
+package service
+
+import (
+	"github.com/nspcc-dev/neofs-api-go/refs"
+)
+
+// TokenID is type alias of UUID ref.
+type TokenID = refs.UUID
+
+// OwnerID is type alias of OwnerID ref.
+type OwnerID = refs.OwnerID
+
+// Address is type alias of Address ref.
+type Address = refs.Address
diff --git a/service/verify.go b/service/verify.go
index 9687032..ade13ef 100644
--- a/service/verify.go
+++ b/service/verify.go
@@ -53,18 +53,6 @@ func (m *RequestVerificationHeader) AddSignature(sig *RequestVerificationHeader_
 	m.Signatures = append(m.Signatures, sig)
 }
 
-// SetOwner adds origin (sign and public key) of owner (client) into first signature.
-func (m *RequestVerificationHeader) SetOwner(pub *ecdsa.PublicKey, sign []byte) {
-	if len(m.Signatures) == 0 || pub == nil {
-		return
-	}
-
-	m.Signatures[0].Origin = &RequestVerificationHeader_Sign{
-		Sign: sign,
-		Peer: crypto.MarshalPublicKey(pub),
-	}
-}
-
 // CheckOwner validates, that passed OwnerID is equal to present PublicKey of owner.
 func (m *RequestVerificationHeader) CheckOwner(owner refs.OwnerID) error {
 	if key, err := m.GetOwner(); err != nil {
@@ -83,18 +71,6 @@ func (m *RequestVerificationHeader) CheckOwner(owner refs.OwnerID) error {
 func (m *RequestVerificationHeader) GetOwner() (*ecdsa.PublicKey, error) {
 	if len(m.Signatures) == 0 {
 		return nil, ErrCannotFindOwner
-	}
-
-	// if first signature contains origin, we should try to validate session key
-	if m.Signatures[0].Origin != nil {
-		owner := crypto.UnmarshalPublicKey(m.Signatures[0].Origin.Peer)
-		if owner == nil {
-			return nil, ErrCannotLoadPublicKey
-		} else if err := crypto.Verify(owner, m.Signatures[0].Peer, m.Signatures[0].Origin.Sign); err != nil {
-			return nil, errors.Wrap(err, "could not verify session token")
-		}
-
-		return owner, nil
 	} else if key := crypto.UnmarshalPublicKey(m.Signatures[0].Peer); key != nil {
 		return key, nil
 	}
@@ -128,10 +104,8 @@ func newSignature(key *ecdsa.PrivateKey, data []byte) (*RequestVerificationHeade
 	}
 
 	return &RequestVerificationHeader_Signature{
-		RequestVerificationHeader_Sign: RequestVerificationHeader_Sign{
-			Sign: sign,
-			Peer: crypto.MarshalPublicKey(&key.PublicKey),
-		},
+		Sign: sign,
+		Peer: crypto.MarshalPublicKey(&key.PublicKey),
 	}, nil
 }
 
diff --git a/service/verify_test.go b/service/verify_test.go
index 27491da..ce333aa 100644
--- a/service/verify_test.go
+++ b/service/verify_test.go
@@ -119,15 +119,13 @@ func TestMaintainableRequest(t *testing.T) {
 		req.TTL--
 
 		key := test.DecodeKey(i)
-		require.NoError(t, SignRequestHeader(key, req))
 
 		// sign first key (session key) by owner key
 		if i == 0 {
-			sign, err := crypto.Sign(owner, crypto.MarshalPublicKey(&key.PublicKey))
-			require.NoError(t, err)
-
-			req.SetOwner(&owner.PublicKey, sign)
+			key = owner
 		}
+
+		require.NoError(t, SignRequestHeader(key, req))
 	}
 
 	{ // Validate owner
@@ -150,17 +148,8 @@ func TestMaintainableRequest(t *testing.T) {
 		require.Equal(t, &owner.PublicKey, pub)
 	}
 
-	{ // wrong owner:
-		req.Signatures[0].Origin = nil
-
-		pub, err := req.GetOwner()
-		require.NoError(t, err)
-
-		require.NotEqual(t, &owner.PublicKey, pub)
-	}
-
 	{ // Wrong signatures:
-		copy(req.Signatures[count-1].Sign, req.Signatures[count-1].Peer)
+		copy(req.Signatures[count-1].Sign, req.Signatures[count-2].Sign)
 		err := VerifyRequestHeader(req)
 		require.EqualError(t, errors.Cause(err), crypto.ErrInvalidSignature.Error())
 	}
diff --git a/session/service.go b/session/service.go
index 182ff7d..367aeb1 100644
--- a/session/service.go
+++ b/session/service.go
@@ -5,7 +5,6 @@ import (
 	"crypto/ecdsa"
 
 	"github.com/nspcc-dev/neofs-api-go/refs"
-	crypto "github.com/nspcc-dev/neofs-crypto"
 )
 
 type (
@@ -31,9 +30,9 @@ type (
 	TokenParams struct {
 		FirstEpoch uint64
 		LastEpoch  uint64
-		ObjectID   []ObjectID
+		Address    Address
 		OwnerID    OwnerID
-		PublicKeys [][]byte
+		Verb       Verb
 	}
 )
 
@@ -46,13 +45,3 @@ func NewInitRequest(t *Token) *CreateRequest {
 func NewSignedRequest(t *Token) *CreateRequest {
 	return &CreateRequest{Message: &CreateRequest_Signed{Signed: t}}
 }
-
-// Sign signs contents of the header with the private key.
-func (m *VerificationHeader) Sign(key *ecdsa.PrivateKey) error {
-	s, err := crypto.Sign(key, m.PublicKey)
-	if err != nil {
-		return err
-	}
-	m.KeySignature = s
-	return nil
-}
diff --git a/session/store.go b/session/store.go
index f6a6655..e46afde 100644
--- a/session/store.go
+++ b/session/store.go
@@ -7,6 +7,7 @@ import (
 	"sync"
 
 	"github.com/nspcc-dev/neofs-api-go/refs"
+	"github.com/nspcc-dev/neofs-api-go/service"
 	crypto "github.com/nspcc-dev/neofs-crypto"
 )
 
@@ -48,13 +49,15 @@ func (s *simpleStore) New(p TokenParams) *PToken {
 	t := &PToken{
 		mtx: new(sync.Mutex),
 		Token: Token{
-			ID:         tid,
-			Header:     VerificationHeader{PublicKey: crypto.MarshalPublicKey(&key.PublicKey)},
-			FirstEpoch: p.FirstEpoch,
-			LastEpoch:  p.LastEpoch,
-			ObjectID:   p.ObjectID,
-			OwnerID:    p.OwnerID,
-			PublicKeys: p.PublicKeys,
+			Token_Info: service.Token_Info{
+				ID:         tid,
+				OwnerID:    p.OwnerID,
+				Verb:       p.Verb,
+				Address:    p.Address,
+				Created:    p.FirstEpoch,
+				ValidUntil: p.LastEpoch,
+				SessionKey: crypto.MarshalPublicKey(&key.PublicKey),
+			},
 		},
 		PrivateKey: key,
 	}
diff --git a/session/store_test.go b/session/store_test.go
index 9ad0e1d..f51fb18 100644
--- a/session/store_test.go
+++ b/session/store_test.go
@@ -1,96 +1,3 @@
 package session
 
-import (
-	"crypto/ecdsa"
-	"crypto/rand"
-	"testing"
-
-	"github.com/nspcc-dev/neofs-api-go/refs"
-	crypto "github.com/nspcc-dev/neofs-crypto"
-	"github.com/stretchr/testify/require"
-)
-
-type testClient struct {
-	*ecdsa.PrivateKey
-	OwnerID OwnerID
-}
-
-func (c *testClient) Sign(data []byte) ([]byte, error) {
-	return crypto.Sign(c.PrivateKey, data)
-}
-
-func newTestClient(t *testing.T) *testClient {
-	key, err := ecdsa.GenerateKey(defaultCurve(), rand.Reader)
-	require.NoError(t, err)
-
-	owner, err := refs.NewOwnerID(&key.PublicKey)
-	require.NoError(t, err)
-
-	return &testClient{PrivateKey: key, OwnerID: owner}
-}
-
-func signToken(t *testing.T, token *PToken, c *testClient) {
-	require.NotNil(t, token)
-	token.SetPublicKeys(&c.PublicKey)
-
-	signH, err := c.Sign(token.Header.PublicKey)
-	require.NoError(t, err)
-	require.NotNil(t, signH)
-
-	// data is not yet signed
-	keys := UnmarshalPublicKeys(&token.Token)
-	require.False(t, token.Verify(keys...))
-
-	signT, err := c.Sign(token.verificationData())
-	require.NoError(t, err)
-	require.NotNil(t, signT)
-
-	token.AddSignatures(signH, signT)
-	require.True(t, token.Verify(keys...))
-}
-
-func TestTokenStore(t *testing.T) {
-	s := NewSimpleStore()
-
-	oid, err := refs.NewObjectID()
-	require.NoError(t, err)
-
-	c := newTestClient(t)
-	require.NotNil(t, c)
-	pk := [][]byte{crypto.MarshalPublicKey(&c.PublicKey)}
-
-	// create new token
-	token := s.New(TokenParams{
-		ObjectID:   []ObjectID{oid},
-		OwnerID:    c.OwnerID,
-		PublicKeys: pk,
-	})
-	signToken(t, token, c)
-
-	// check that it can be fetched
-	t1 := s.Fetch(token.ID)
-	require.NotNil(t, t1)
-	require.Equal(t, token, t1)
-
-	// create and sign another token by the same client
-	t1 = s.New(TokenParams{
-		ObjectID:   []ObjectID{oid},
-		OwnerID:    c.OwnerID,
-		PublicKeys: pk,
-	})
-
-	signToken(t, t1, c)
-
-	data := []byte{1, 2, 3}
-	sign, err := t1.SignData(data)
-	require.NoError(t, err)
-	require.Error(t, token.Header.VerifyData(data, sign))
-
-	sign, err = token.SignData(data)
-	require.NoError(t, err)
-	require.NoError(t, token.Header.VerifyData(data, sign))
-
-	s.Remove(token.ID)
-	require.Nil(t, s.Fetch(token.ID))
-	require.NotNil(t, s.Fetch(t1.ID))
-}
+// TODO: write unit tests
diff --git a/session/types.go b/session/types.go
index 4165291..e56373c 100644
--- a/session/types.go
+++ b/session/types.go
@@ -2,14 +2,12 @@ package session
 
 import (
 	"crypto/ecdsa"
-	"encoding/binary"
 	"sync"
 
-	"github.com/nspcc-dev/neofs-api-go/chain"
 	"github.com/nspcc-dev/neofs-api-go/internal"
 	"github.com/nspcc-dev/neofs-api-go/refs"
+	"github.com/nspcc-dev/neofs-api-go/service"
 	crypto "github.com/nspcc-dev/neofs-crypto"
-	"github.com/pkg/errors"
 )
 
 type (
@@ -19,6 +17,12 @@ type (
 	OwnerID = refs.OwnerID
 	// TokenID type alias.
 	TokenID = refs.UUID
+	// Token type alias
+	Token = service.Token
+	// Address type alias
+	Address = refs.Address
+	// Verb is Token_Info_Verb type alias
+	Verb = service.Token_Info_Verb
 
 	// PToken is a wrapper around Token that allows to sign data
 	// and to do thread-safe manipulations.
@@ -55,127 +59,7 @@ const (
 	ErrInvalidSignature = internal.Error("invalid signature")
 )
 
-// verificationData returns byte array to sign.
-// Note: protobuf serialization is inconsistent as
-// wire order is unspecified.
-func (m *Token) verificationData() (data []byte) {
-	var size int
-	if l := len(m.ObjectID); l > 0 {
-		size = m.ObjectID[0].Size()
-		data = make([]byte, 16+l*size)
-	} else {
-		data = make([]byte, 16)
-	}
-	binary.BigEndian.PutUint64(data, m.FirstEpoch)
-	binary.BigEndian.PutUint64(data[8:], m.LastEpoch)
-	for i := range m.ObjectID {
-		copy(data[16+i*size:], m.ObjectID[i].Bytes())
-	}
-	return
-}
-
-// IsSame checks if the passed token is valid and equal to current token
-func (m *Token) IsSame(t *Token) error {
-	switch {
-	case m.FirstEpoch != t.FirstEpoch:
-		return ErrWrongFirstEpoch
-	case m.LastEpoch != t.LastEpoch:
-		return ErrWrongLastEpoch
-	case !m.OwnerID.Equal(t.OwnerID):
-		return ErrWrongOwner
-	case m.Header.PublicKey == nil:
-		return ErrEmptyPublicKey
-	case len(m.ObjectID) != len(t.ObjectID):
-		return ErrWrongObjectsCount
-	default:
-		for i := range m.ObjectID {
-			if !m.ObjectID[i].Equal(t.ObjectID[i]) {
-				return errors.Wrapf(ErrWrongObjects, "expect %s, actual: %s", m.ObjectID[i], t.ObjectID[i])
-			}
-		}
-	}
-	return nil
-}
-
-// Sign tries to sign current Token data and stores signature inside it.
-func (m *Token) Sign(key *ecdsa.PrivateKey) error {
-	if err := m.Header.Sign(key); err != nil {
-		return err
-	}
-
-	s, err := crypto.Sign(key, m.verificationData())
-	if err != nil {
-		return err
-	}
-
-	m.Signature = s
-	return nil
-}
-
-// SetPublicKeys sets owner's public keys to the token
-func (m *Token) SetPublicKeys(keys ...*ecdsa.PublicKey) {
-	m.PublicKeys = m.PublicKeys[:0]
-	for i := range keys {
-		m.PublicKeys = append(m.PublicKeys, crypto.MarshalPublicKey(keys[i]))
-	}
-}
-
-// Verify checks if token is correct and signed.
-func (m *Token) Verify(keys ...*ecdsa.PublicKey) bool {
-	if m.FirstEpoch > m.LastEpoch {
-		return false
-	}
-	ownerFromKeys := chain.KeysToAddress(keys...)
-	if m.OwnerID.String() != ownerFromKeys {
-		return false
-	}
-
-	for i := range keys {
-		if m.Header.Verify(keys[i]) && crypto.Verify(keys[i], m.verificationData(), m.Signature) == nil {
-			return true
-		}
-	}
-	return false
-}
-
-// AddSignatures adds token signatures.
-func (t *PToken) AddSignatures(signH, signT []byte) {
-	t.mtx.Lock()
-
-	t.Header.KeySignature = signH
-	t.Signature = signT
-
-	t.mtx.Unlock()
-}
-
 // SignData signs data with session private key.
 func (t *PToken) SignData(data []byte) ([]byte, error) {
 	return crypto.Sign(t.PrivateKey, data)
 }
-
-// VerifyData checks if signature of data by token is equal to sign.
-func (m *VerificationHeader) VerifyData(data, sign []byte) error {
-	if crypto.Verify(crypto.UnmarshalPublicKey(m.PublicKey), data, sign) != nil {
-		return ErrInvalidSignature
-	}
-	return nil
-}
-
-// Verify checks if verification header was issued by id.
-func (m *VerificationHeader) Verify(keys ...*ecdsa.PublicKey) bool {
-	for i := range keys {
-		if crypto.Verify(keys[i], m.PublicKey, m.KeySignature) == nil {
-			return true
-		}
-	}
-	return false
-}
-
-// UnmarshalPublicKeys returns unmarshal public keys from the token
-func UnmarshalPublicKeys(t *Token) []*ecdsa.PublicKey {
-	r := make([]*ecdsa.PublicKey, 0, len(t.PublicKeys))
-	for i := range t.PublicKeys {
-		r = append(r, crypto.UnmarshalPublicKey(t.PublicKeys[i]))
-	}
-	return r
-}