diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2e7736d..a3f3c8c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,22 @@
 # Changelog
 This is the changelog for NeoFS Proto
 
+## [0.2.3] - 2019-11-28
+
+### Removed
+- service: SignRequest / VerifyRequest and accompanying code 
+- proto: Signature field from requests
+- object: bytefmt package not used anymore   
+
+### Changed
+- service: rename EpochRequest to EpochHeader and merge with MetaHeader
+- service: get status error even if it is wrapped
+
+### Added
+- service: RequestVerificationHeader's method to validate owner
+- service: test coverage for CheckOwner
+- service: test coverage for wrapped status errors
+
 ## [0.2.2] - 2019-11-22
 
 ### Changed
@@ -33,3 +49,4 @@ Initial public release
 [0.2.0]: https://github.com/nspcc-dev/neofs-proto/compare/v0.1.0...v0.2.0
 [0.2.1]: https://github.com/nspcc-dev/neofs-proto/compare/v0.2.0...v0.2.1
 [0.2.2]: https://github.com/nspcc-dev/neofs-proto/compare/v0.2.1...v0.2.2
+[0.2.3]: https://github.com/nspcc-dev/neofs-proto/compare/v0.2.2...v0.2.3
diff --git a/accounting/withdraw.go b/accounting/withdraw.go
index 0a8cf90..11c5608 100644
--- a/accounting/withdraw.go
+++ b/accounting/withdraw.go
@@ -11,12 +11,6 @@ type (
 	MessageID = refs.MessageID
 )
 
-// SetSignature sets signature to PutRequest to satisfy SignedRequest interface.
-func (m *PutRequest) SetSignature(v []byte) { m.Signature = v }
-
-// SetSignature sets signature to DeleteRequest to satisfy SignedRequest interface.
-func (m *DeleteRequest) SetSignature(v []byte) { m.Signature = v }
-
 // PrepareData prepares bytes representation of PutRequest to satisfy SignedRequest interface.
 func (m *PutRequest) PrepareData() ([]byte, error) {
 	var offset int
diff --git a/accounting/withdraw.pb.go b/accounting/withdraw.pb.go
index a2116c0..d80b01c 100644
Binary files a/accounting/withdraw.pb.go and b/accounting/withdraw.pb.go differ
diff --git a/accounting/withdraw.proto b/accounting/withdraw.proto
index bb950ba..a44e47a 100644
--- a/accounting/withdraw.proto
+++ b/accounting/withdraw.proto
@@ -59,8 +59,6 @@ message PutRequest {
     uint64 Height                            = 3;
     // MessageID is a nonce for uniq request (UUIDv4)
     bytes MessageID                          = 4 [(gogoproto.customtype) = "MessageID", (gogoproto.nullable) = false];
-    // Signature is a signature of the sent request
-    bytes Signature                          = 5;
     // RequestMetaHeader contains information about request meta headers (should be embedded into message)
     service.RequestMetaHeader Meta           = 98 [(gogoproto.embed) = true, (gogoproto.nullable) = false];
     // RequestVerificationHeader is a set of signatures of every NeoFS Node that processed request (should be embedded into message)
@@ -92,8 +90,6 @@ message DeleteRequest {
     bytes OwnerID                            = 2 [(gogoproto.customtype) = "OwnerID", (gogoproto.nullable) = false];
     // MessageID is a nonce for uniq request (UUIDv4)
     bytes MessageID                          = 3 [(gogoproto.customtype) = "MessageID", (gogoproto.nullable) = false];
-    // Signature is a signature of the sent request
-    bytes Signature                          = 4;
     // RequestMetaHeader contains information about request meta headers (should be embedded into message)
     service.RequestMetaHeader Meta           = 98 [(gogoproto.embed) = true, (gogoproto.nullable) = false];
     // RequestVerificationHeader is a set of signatures of every NeoFS Node that processed request (should be embedded into message)
diff --git a/container/service.go b/container/service.go
index 4d3747e..24727ee 100644
--- a/container/service.go
+++ b/container/service.go
@@ -25,12 +25,6 @@ const (
 	ErrNotFound = internal.Error("could not find container")
 )
 
-// SetSignature sets signature to PutRequest to satisfy SignedRequest interface.
-func (m *PutRequest) SetSignature(v []byte) { m.Signature = v }
-
-// SetSignature sets signature to DeleteRequest to satisfy SignedRequest interface.
-func (m *DeleteRequest) SetSignature(v []byte) { m.Signature = v }
-
 // PrepareData prepares bytes representation of PutRequest to satisfy SignedRequest interface.
 func (m *PutRequest) PrepareData() ([]byte, error) {
 	var (
diff --git a/container/service.pb.go b/container/service.pb.go
index 8b98cfa..d9febc0 100644
Binary files a/container/service.pb.go and b/container/service.pb.go differ
diff --git a/container/service.proto b/container/service.proto
index d4d50ca..8a3f56c 100644
--- a/container/service.proto
+++ b/container/service.proto
@@ -41,9 +41,6 @@ message PutRequest {
     // Rules define storage policy for the object inside the container.
     netmap.PlacementRule rules               = 4 [(gogoproto.nullable) = false];
 
-    // Signature of the user (owner id)
-    bytes Signature                          = 5;
-
     // RequestMetaHeader contains information about request meta headers (should be embedded into message)
     service.RequestMetaHeader Meta           = 98 [(gogoproto.embed) = true, (gogoproto.nullable) = false];
     // RequestVerificationHeader is a set of signatures of every NeoFS Node that processed request (should be embedded into message)
@@ -59,9 +56,6 @@ message DeleteRequest {
     // CID (container id) is a SHA256 hash of the container structure
     bytes CID                                = 1 [(gogoproto.customtype) = "CID", (gogoproto.nullable) = false];
 
-    // Signature of the container owner
-    bytes Signature                          = 2;
-
     // RequestMetaHeader contains information about request meta headers (should be embedded into message)
     service.RequestMetaHeader Meta           = 98 [(gogoproto.embed) = true, (gogoproto.nullable) = false];
     // RequestVerificationHeader is a set of signatures of every NeoFS Node that processed request (should be embedded into message)
diff --git a/docs/accounting.md b/docs/accounting.md
index 268a187..bcae136 100644
--- a/docs/accounting.md
+++ b/docs/accounting.md
@@ -362,7 +362,6 @@ Delete allows user to remove unused cheque
 | ID | [bytes](#bytes) |  | ID is cheque identifier |
 | OwnerID | [bytes](#bytes) |  | OwnerID is a wallet address |
 | MessageID | [bytes](#bytes) |  | MessageID is a nonce for uniq request (UUIDv4) |
-| Signature | [bytes](#bytes) |  | Signature is a signature of the sent request |
 | 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) |
 
@@ -450,7 +449,6 @@ DeleteResponse is empty
 | Amount | [decimal.Decimal](#decimal.Decimal) |  | Amount of funds |
 | Height | [uint64](#uint64) |  | Height is the neo blockchain height until the cheque is valid |
 | MessageID | [bytes](#bytes) |  | MessageID is a nonce for uniq request (UUIDv4) |
-| Signature | [bytes](#bytes) |  | Signature is a signature of the sent request |
 | 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) |
 
diff --git a/docs/container.md b/docs/container.md
index bc559ce..ef2ba19 100644
--- a/docs/container.md
+++ b/docs/container.md
@@ -92,7 +92,6 @@ List returns all user's containers
 | Field | Type | Label | Description |
 | ----- | ---- | ----- | ----------- |
 | CID | [bytes](#bytes) |  | CID (container id) is a SHA256 hash of the container structure |
-| Signature | [bytes](#bytes) |  | Signature of the container owner |
 | 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) |
 
@@ -165,7 +164,6 @@ 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. |
-| Signature | [bytes](#bytes) |  | Signature of the user (owner id) |
 | 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) |
 
diff --git a/go.mod b/go.mod
index 06fb5c0..dc07a30 100644
--- a/go.mod
+++ b/go.mod
@@ -3,16 +3,13 @@ module github.com/nspcc-dev/neofs-proto
 go 1.13
 
 require (
-	code.cloudfoundry.org/bytefmt v0.0.0-20190819182555-854d396b647c
 	github.com/gogo/protobuf v1.3.1
 	github.com/golang/protobuf v1.3.2
 	github.com/google/uuid v1.1.1
-	github.com/mr-tron/base58 v1.1.2
+	github.com/mr-tron/base58 v1.1.3
 	github.com/nspcc-dev/neofs-crypto v0.2.2
 	github.com/nspcc-dev/netmap v1.6.1
 	github.com/nspcc-dev/tzhash v1.3.0
-	github.com/onsi/ginkgo v1.10.2 // indirect
-	github.com/onsi/gomega v1.7.0 // indirect
 	github.com/pkg/errors v0.8.1
 	github.com/prometheus/client_golang v1.2.1
 	github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4
diff --git a/go.sum b/go.sum
index f06a499..13842ce 100644
--- a/go.sum
+++ b/go.sum
@@ -1,6 +1,4 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-code.cloudfoundry.org/bytefmt v0.0.0-20190819182555-854d396b647c h1:2RuXx1+tSNWRjxhY0Bx52kjV2odJQ0a6MTbfTPhGAkg=
-code.cloudfoundry.org/bytefmt v0.0.0-20190819182555-854d396b647c/go.mod h1:wN/zk7mhREp/oviagqUXY3EwuHhWyOvAdsn5Y4CzOrc=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/abiosoft/ishell v2.0.0+incompatible/go.mod h1:HQR9AqF2R3P4XXpMpI0NAzgHf/aS6+zVXRj14cVk9qg=
 github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db/go.mod h1:rB3B4rKii8V21ydCbIzH5hZiCQE7f5E9SzUb/ZZx530=
@@ -25,8 +23,6 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:rZfgFAXFS/z/lEd6LJmf9HVZ1LkgYiHx5pHhV5DR16M=
-github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
-github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
@@ -49,8 +45,6 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
-github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.7/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
@@ -68,6 +62,8 @@ github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lN
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/mr-tron/base58 v1.1.2 h1:ZEw4I2EgPKDJ2iEw0cNmLB3ROrEmkOtXIkaG7wZg+78=
 github.com/mr-tron/base58 v1.1.2/go.mod h1:BinMc/sQntlIE1frQmRFPUoPA1Zkr8VRgBdjWI2mNwc=
+github.com/mr-tron/base58 v1.1.3 h1:v+sk57XuaCKGXpWtVBX8YJzO7hMGx4Aajh4TQbdEFdc=
+github.com/mr-tron/base58 v1.1.3/go.mod h1:BinMc/sQntlIE1frQmRFPUoPA1Zkr8VRgBdjWI2mNwc=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/nspcc-dev/hrw v1.0.8 h1:vwRuJXZXgkMvf473vFzeWGCfY1WBVeSHAEHvR4u3/Cg=
 github.com/nspcc-dev/hrw v1.0.8/go.mod h1:l/W2vx83vMQo6aStyx2AuZrJ+07lGv2JQGlVkPG06MU=
@@ -79,11 +75,6 @@ github.com/nspcc-dev/rfc6979 v0.1.0 h1:Lwg7esRRoyK1Up/IN1vAef1EmvrBeMHeeEkek2fAJ
 github.com/nspcc-dev/rfc6979 v0.1.0/go.mod h1:exhIh1PdpDC5vQmyEsGvc4YDM/lyQp/452QxGq/UEso=
 github.com/nspcc-dev/tzhash v1.3.0 h1:n6FTHsfPYbMi5Jmo6SwGVVRQD8i2w1P2ScCaW6rz69Q=
 github.com/nspcc-dev/tzhash v1.3.0/go.mod h1:Lc4DersKS8MNIrunTmsAzANO56qnG+LZ4GOE/WYGVzU=
-github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
-github.com/onsi/ginkgo v1.10.2 h1:uqH7bpe+ERSiDa34FDOF7RikN6RzXgduUF8yarlZp94=
-github.com/onsi/ginkgo v1.10.2/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
-github.com/onsi/gomega v1.7.0 h1:XPnZz8VVBHjVsy1vzJmRwIcSwiUO+JFfrv/xGiigmME=
-github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -119,7 +110,6 @@ golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACk
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550 h1:ObdrDkeb4kJdCP557AjRjq69pTHfNouLtWZG7j9rPN8=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3 h1:0GoQqolDA55aaLxZyTzK/Y2ePZzZTUrRacwib7cNsYQ=
@@ -127,12 +117,10 @@ golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980 h1:dfGZHvZk057jK2MCeWus/TowKpJ8y4AmooUzdBSR9GU=
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
-golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181228144115-9a3f9b0469bb/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -155,10 +143,6 @@ gopkg.in/abiosoft/ishell.v2 v2.0.0/go.mod h1:sFp+cGtH6o4s1FtpVPTMcHq2yue+c4DGOVo
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
-gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
-gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
-gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/object/utils.go b/object/utils.go
index c0fb624..fab7fcc 100644
--- a/object/utils.go
+++ b/object/utils.go
@@ -2,12 +2,43 @@ package object
 
 import (
 	"io"
+	"strconv"
 
-	"code.cloudfoundry.org/bytefmt"
 	"github.com/nspcc-dev/neofs-proto/session"
 	"github.com/pkg/errors"
 )
 
+// ByteSize used to format bytes
+type ByteSize uint64
+
+// String represents ByteSize in string format
+func (b ByteSize) String() string {
+	var (
+		dec  int64
+		unit string
+		num  = int64(b)
+	)
+
+	switch {
+	case num > UnitsTB:
+		unit = "TB"
+		dec = UnitsTB
+	case num > UnitsGB:
+		unit = "GB"
+		dec = UnitsGB
+	case num > UnitsMB:
+		unit = "MB"
+		dec = UnitsMB
+	case num > UnitsKB:
+		unit = "KB"
+		dec = UnitsKB
+	case num > UnitsB:
+		dec = 1
+	}
+
+	return strconv.FormatFloat(float64(num)/float64(dec), 'g', 6, 64) + unit
+}
+
 // MakePutRequestHeader combines object and session token value
 // into header of object put request.
 func MakePutRequestHeader(obj *Object, token *session.Token) *PutRequest {
@@ -26,7 +57,7 @@ func MakePutRequestChunk(chunk []byte) *PutRequest {
 }
 
 func errMaxSizeExceeded(size uint64) error {
-	return errors.Errorf("object payload size exceed: %s", bytefmt.ByteSize(size))
+	return errors.Errorf("object payload size exceed: %s", ByteSize(size).String())
 }
 
 // ReceiveGetResponse receives object by chunks from the protobuf stream
diff --git a/object/utils_test.go b/object/utils_test.go
new file mode 100644
index 0000000..a3f0162
--- /dev/null
+++ b/object/utils_test.go
@@ -0,0 +1,48 @@
+package object
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestByteSize_String(t *testing.T) {
+	var cases = []struct {
+		name   string
+		expect string
+		actual ByteSize
+	}{
+		{
+			name:   "101 bytes",
+			expect: "101",
+			actual: ByteSize(101),
+		},
+		{
+			name:   "112.84KB",
+			expect: "112.84KB",
+			actual: ByteSize(115548),
+		},
+		{
+			name:   "80.44MB",
+			expect: "80.44MB",
+			actual: ByteSize(84347453),
+		},
+		{
+			name:   "905.144GB",
+			expect: "905.144GB",
+			actual: ByteSize(971891061884),
+		},
+		{
+			name:   "1.857TB",
+			expect: "1.857TB",
+			actual: ByteSize(2041793092780),
+		},
+	}
+
+	for i := range cases {
+		tt := cases[i]
+		t.Run(tt.name, func(t *testing.T) {
+			require.Equal(t, tt.expect, tt.actual.String())
+		})
+	}
+}
diff --git a/service/epoch.go b/service/epoch.go
deleted file mode 100644
index 2fd4381..0000000
--- a/service/epoch.go
+++ /dev/null
@@ -1,7 +0,0 @@
-package service
-
-// EpochRequest interface gives possibility to get or set epoch in RPC Requests.
-type EpochRequest interface {
-	GetEpoch() uint64
-	SetEpoch(v uint64)
-}
diff --git a/service/meta.go b/service/meta.go
index abffdad..8730386 100644
--- a/service/meta.go
+++ b/service/meta.go
@@ -2,6 +2,7 @@ package service
 
 import (
 	"github.com/nspcc-dev/neofs-proto/internal"
+	"github.com/pkg/errors"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 )
@@ -19,14 +20,19 @@ type (
 		GetTTL() uint32
 		SetTTL(uint32)
 
-		// EpochRequest gives possibility to get or set epoch in RPC Requests.
-		GetEpoch() uint64
-		SetEpoch(uint64)
+		// EpochHeader gives possibility to get or set epoch in RPC Requests.
+		EpochHeader
 
 		// VersionHeader allows get or set version of protocol request
 		VersionHeader
 	}
 
+	// EpochHeader interface gives possibility to get or set epoch in RPC Requests.
+	EpochHeader interface {
+		GetEpoch() uint64
+		SetEpoch(v uint64)
+	}
+
 	// VersionHeader allows get or set version of protocol request
 	VersionHeader interface {
 		GetVersion() uint32
@@ -101,7 +107,7 @@ func ProcessRequestTTL(req MetaHeader, cond ...TTLCondition) error {
 
 		// check specific condition:
 		if err := cond[i](ttl); err != nil {
-			if st, ok := status.FromError(err); ok {
+			if st, ok := status.FromError(errors.Cause(err)); ok {
 				return st.Err()
 			}
 
diff --git a/service/meta_test.go b/service/meta_test.go
index 496ea51..e208dfe 100644
--- a/service/meta_test.go
+++ b/service/meta_test.go
@@ -3,6 +3,7 @@ package service
 import (
 	"testing"
 
+	"github.com/pkg/errors"
 	"github.com/stretchr/testify/require"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
@@ -54,6 +55,18 @@ func TestMetaRequest(t *testing.T) {
 			RequestMetaHeader: RequestMetaHeader{TTL: SingleForwardingTTL},
 			handler:           func(_ uint32) error { return status.Error(codes.NotFound, "not found") },
 		},
+		{
+			msg:               "not found",
+			code:              codes.NotFound,
+			name:              "custom wrapped status error",
+			RequestMetaHeader: RequestMetaHeader{TTL: SingleForwardingTTL},
+			handler: func(_ uint32) error {
+				err := status.Error(codes.NotFound, "not found")
+				err = errors.Wrap(err, "some error context")
+				err = errors.Wrap(err, "another error context")
+				return err
+			},
+		},
 	}
 
 	for i := range tests {
diff --git a/service/sign.go b/service/sign.go
deleted file mode 100644
index d8db94e..0000000
--- a/service/sign.go
+++ /dev/null
@@ -1,47 +0,0 @@
-package service
-
-import (
-	"crypto/ecdsa"
-
-	crypto "github.com/nspcc-dev/neofs-crypto"
-	"github.com/nspcc-dev/neofs-proto/internal"
-	"github.com/pkg/errors"
-)
-
-// ErrWrongSignature should be raised when wrong signature is passed into VerifyRequest.
-const ErrWrongSignature = internal.Error("wrong signature")
-
-// SignedRequest interface allows sign and verify requests.
-type SignedRequest interface {
-	PrepareData() ([]byte, error)
-	GetSignature() []byte
-	SetSignature([]byte)
-}
-
-// SignRequest with passed private key.
-func SignRequest(r SignedRequest, key *ecdsa.PrivateKey) error {
-	var signature []byte
-	if data, err := r.PrepareData(); err != nil {
-		return err
-	} else if signature, err = crypto.Sign(key, data); err != nil {
-		return errors.Wrap(err, "could not sign data")
-	}
-
-	r.SetSignature(signature)
-
-	return nil
-}
-
-// VerifyRequest by passed public keys.
-func VerifyRequest(r SignedRequest, keys ...*ecdsa.PublicKey) bool {
-	data, err := r.PrepareData()
-	if err != nil {
-		return false
-	}
-	for i := range keys {
-		if err := crypto.Verify(keys[i], data, r.GetSignature()); err == nil {
-			return true
-		}
-	}
-	return false
-}
diff --git a/service/verify.go b/service/verify.go
index a6ac3a5..48e2871 100644
--- a/service/verify.go
+++ b/service/verify.go
@@ -6,6 +6,7 @@ import (
 	"github.com/gogo/protobuf/proto"
 	crypto "github.com/nspcc-dev/neofs-crypto"
 	"github.com/nspcc-dev/neofs-proto/internal"
+	"github.com/nspcc-dev/neofs-proto/refs"
 	"github.com/pkg/errors"
 )
 
@@ -35,6 +36,9 @@ const (
 
 	// ErrCannotFindOwner is raised when signatures empty in GetOwner.
 	ErrCannotFindOwner = internal.Error("cannot find owner public key")
+
+	// ErrWrongOwner is raised when passed OwnerID not equal to present PublicKey
+	ErrWrongOwner = internal.Error("wrong owner")
 )
 
 // SetSignatures replaces signatures stored in RequestVerificationHeader.
@@ -62,6 +66,18 @@ func (m *RequestVerificationHeader) SetOwner(pub *ecdsa.PublicKey, sign []byte)
 	}
 }
 
+// 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 {
+		return err
+	} else if user, err := refs.NewOwnerID(key); err != nil {
+		return err
+	} else if !user.Equal(owner) {
+		return ErrWrongOwner
+	}
+	return nil
+}
+
 // GetOwner tries to get owner (client) public key from signatures.
 // If signatures contains not empty Origin, we should try to validate,
 // that session key was signed by owner (client), otherwise return error.
diff --git a/service/verify_test.go b/service/verify_test.go
index 1403c67..237e362 100644
--- a/service/verify_test.go
+++ b/service/verify_test.go
@@ -9,6 +9,7 @@ import (
 	"github.com/gogo/protobuf/proto"
 	crypto "github.com/nspcc-dev/neofs-crypto"
 	"github.com/nspcc-dev/neofs-crypto/test"
+	"github.com/nspcc-dev/neofs-proto/refs"
 	"github.com/pkg/errors"
 	"github.com/stretchr/testify/require"
 )
@@ -78,6 +79,12 @@ func TestMaintainableRequest(t *testing.T) {
 		}
 	}
 
+	{ // Validate owner
+		user, err := refs.NewOwnerID(&owner.PublicKey)
+		require.NoError(t, err)
+		require.NoError(t, req.CheckOwner(user))
+	}
+
 	{ // Good case:
 		require.NoError(t, VerifyRequestHeader(req))