diff --git a/go.mod b/go.mod
index 0dafc50c7..6121dd82e 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	github.com/go-redis/redis v6.10.2+incompatible
 	github.com/go-yaml/yaml v2.1.0+incompatible
 	github.com/mr-tron/base58 v1.1.2
-	github.com/nspcc-dev/dbft v0.0.0-20191209120240-0d6b7568d9ae
+	github.com/nspcc-dev/dbft v0.0.0-20191213082456-c81c7a796775
 	github.com/nspcc-dev/rfc6979 v0.1.0
 	github.com/pkg/errors v0.8.1
 	github.com/prometheus/client_golang v1.2.1
diff --git a/go.sum b/go.sum
index 5226ee678..95c56f302 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,6 @@
 github.com/CityOfZion/neo-go v0.62.1-pre.0.20191114145240-e740fbe708f8/go.mod h1:MJCkWUBhi9pn/CrYO1Q3P687y2KeahrOPS9BD9LDGb0=
 github.com/CityOfZion/neo-go v0.70.1-pre.0.20191209120015-fccb0085941e/go.mod h1:0enZl0az8xA6PVkwzEOwPWVJGqlt/GO4hA4kmQ5Xzig=
+github.com/CityOfZion/neo-go v0.70.1-pre.0.20191212173117-32ac01130d4c/go.mod h1:JtlHfeqLywZLswKIKFnAp+yzezY4Dji9qlfQKB2OD/I=
 github.com/Workiva/go-datastructures v1.0.50 h1:slDmfW6KCHcC7U+LP3DDBbm4fqTwZGn1beOFPfGaLvo=
 github.com/Workiva/go-datastructures v1.0.50/go.mod h1:Z+F2Rca0qCsVYDS8z7bAGm8f3UkzuWYS/oBZz5a7VVA=
 github.com/abiosoft/ishell v2.0.0+incompatible h1:zpwIuEHc37EzrsIYah3cpevrIc8Oma7oZPxr03tlmmw=
@@ -93,6 +94,8 @@ github.com/nspcc-dev/dbft v0.0.0-20191205084618-dacb1a30c254 h1:A4OkQDQOSPsJF8qU
 github.com/nspcc-dev/dbft v0.0.0-20191205084618-dacb1a30c254/go.mod h1:w1Ln2aT+dBlPhLnuZhBV+DfPEdS2CHWWLp5JTScY3bw=
 github.com/nspcc-dev/dbft v0.0.0-20191209120240-0d6b7568d9ae h1:T5V1QANlNMKun0EPB3eqg2PTXG4rmLhzDyEiV63kdB0=
 github.com/nspcc-dev/dbft v0.0.0-20191209120240-0d6b7568d9ae/go.mod h1:3FjXOoHmA51EGfb5GS/HOv7VdmngNRTssSeQ729dvGY=
+github.com/nspcc-dev/dbft v0.0.0-20191213082456-c81c7a796775 h1:iqRxuEBrT2QbSdgmvGCwgn+lnOKmx1L5EiVTcOXUYt8=
+github.com/nspcc-dev/dbft v0.0.0-20191213082456-c81c7a796775/go.mod h1:IyIyVYKfi41kAlGWqicz9G8Iyni71Resuhtd9Y5ujJM=
 github.com/nspcc-dev/neofs-crypto v0.2.0 h1:ftN+59WqxSWz/RCgXYOfhmltOOqU+udsNQSvN6wkFck=
 github.com/nspcc-dev/neofs-crypto v0.2.0/go.mod h1:F/96fUzPM3wR+UGsPi3faVNmFlA9KAEAUQR7dMxZmNA=
 github.com/nspcc-dev/rfc6979 v0.1.0 h1:Lwg7esRRoyK1Up/IN1vAef1EmvrBeMHeeEkek2fAJ6c=
diff --git a/pkg/io/binaryReader.go b/pkg/io/binaryReader.go
index cd49a38b9..fd23355a2 100644
--- a/pkg/io/binaryReader.go
+++ b/pkg/io/binaryReader.go
@@ -38,15 +38,6 @@ func NewBinReaderFromBuf(b []byte) *BinReader {
 	return NewBinReaderFromIO(r)
 }
 
-// ReadLE reads from the underlying io.Reader
-// into the interface v in little-endian format.
-func (r *BinReader) ReadLE(v interface{}) {
-	if r.Err != nil {
-		return
-	}
-	r.Err = binary.Read(r.r, binary.LittleEndian, v)
-}
-
 // ReadU64LE reads a little-endian encoded uint64 value from the underlying
 // io.Reader. On read failures it returns zero.
 func (r *BinReader) ReadU64LE() uint64 {
@@ -153,15 +144,6 @@ func (r *BinReader) ReadArray(t interface{}, maxSize ...int) {
 	value.Elem().Set(arr)
 }
 
-// ReadBE reads from the underlying io.Reader
-// into the interface v in big-endian format.
-func (r *BinReader) ReadBE(v interface{}) {
-	if r.Err != nil {
-		return
-	}
-	r.Err = binary.Read(r.r, binary.BigEndian, v)
-}
-
 // ReadVarUint reads a variable-length-encoded integer from the
 // underlying reader.
 func (r *BinReader) ReadVarUint() uint64 {
diff --git a/pkg/io/binaryWriter.go b/pkg/io/binaryWriter.go
index db48fd26f..9785b0449 100644
--- a/pkg/io/binaryWriter.go
+++ b/pkg/io/binaryWriter.go
@@ -27,22 +27,6 @@ func NewBinWriterFromIO(iow io.Writer) *BinWriter {
 	return &BinWriter{w: iow, u64: u64, u32: u32, u16: u16, u8: u8}
 }
 
-// WriteLE writes into the underlying io.Writer from an object v in little-endian format.
-func (w *BinWriter) WriteLE(v interface{}) {
-	if w.Err != nil {
-		return
-	}
-	w.Err = binary.Write(w.w, binary.LittleEndian, v)
-}
-
-// WriteBE writes into the underlying io.Writer from an object v in big-endian format.
-func (w *BinWriter) WriteBE(v interface{}) {
-	if w.Err != nil {
-		return
-	}
-	w.Err = binary.Write(w.w, binary.BigEndian, v)
-}
-
 // WriteU64LE writes an uint64 value into the underlying io.Writer in
 // little-endian format.
 func (w *BinWriter) WriteU64LE(u64 uint64) {
diff --git a/pkg/io/binaryrw_test.go b/pkg/io/binaryrw_test.go
index cb733cb4f..d5e1cf8c6 100644
--- a/pkg/io/binaryrw_test.go
+++ b/pkg/io/binaryrw_test.go
@@ -19,40 +19,6 @@ func (w *badRW) Read(p []byte) (int, error) {
 	return w.Write(p)
 }
 
-func TestWriteLE(t *testing.T) {
-	var (
-		val     uint32 = 0xdeadbeef
-		readval uint32
-		bin     = []byte{0xef, 0xbe, 0xad, 0xde}
-	)
-	bw := NewBufBinWriter()
-	bw.WriteLE(val)
-	assert.Nil(t, bw.Err)
-	wrotebin := bw.Bytes()
-	assert.Equal(t, wrotebin, bin)
-	br := NewBinReaderFromBuf(bin)
-	br.ReadLE(&readval)
-	assert.Nil(t, br.Err)
-	assert.Equal(t, val, readval)
-}
-
-func TestWriteBE(t *testing.T) {
-	var (
-		val     uint32 = 0xdeadbeef
-		readval uint32
-		bin     = []byte{0xde, 0xad, 0xbe, 0xef}
-	)
-	bw := NewBufBinWriter()
-	bw.WriteBE(val)
-	assert.Nil(t, bw.Err)
-	wrotebin := bw.Bytes()
-	assert.Equal(t, wrotebin, bin)
-	br := NewBinReaderFromBuf(bin)
-	br.ReadBE(&readval)
-	assert.Nil(t, br.Err)
-	assert.Equal(t, val, readval)
-}
-
 func TestWriteU64LE(t *testing.T) {
 	var (
 		val     uint64 = 0xbadc0de15a11dead
@@ -173,18 +139,18 @@ func TestReadLEErrors(t *testing.T) {
 func TestBufBinWriter_Len(t *testing.T) {
 	val := []byte{0xde}
 	bw := NewBufBinWriter()
-	bw.WriteLE(val)
+	bw.WriteBytes(val)
 	require.Equal(t, 1, bw.Len())
 }
 
 func TestWriterErrHandling(t *testing.T) {
 	var badio = &badRW{}
 	bw := NewBinWriterFromIO(badio)
-	bw.WriteLE(uint32(0))
+	bw.WriteU32LE(uint32(0))
 	assert.NotNil(t, bw.Err)
 	// these should work (without panic), preserving the Err
-	bw.WriteLE(uint32(0))
-	bw.WriteBE(uint32(0))
+	bw.WriteU32LE(uint32(0))
+	bw.WriteU16BE(uint16(0))
 	bw.WriteVarUint(0)
 	bw.WriteVarBytes([]byte{0x55, 0xaa})
 	bw.WriteString("neo")
@@ -193,19 +159,14 @@ func TestWriterErrHandling(t *testing.T) {
 
 func TestReaderErrHandling(t *testing.T) {
 	var (
-		i     uint32 = 0xdeadbeef
-		iorig        = i
-		badio        = &badRW{}
+		badio = &badRW{}
 	)
 	br := NewBinReaderFromIO(badio)
-	br.ReadLE(&i)
+	br.ReadU32LE()
 	assert.NotNil(t, br.Err)
-	// i shouldn't change
-	assert.Equal(t, i, iorig)
 	// these should work (without panic), preserving the Err
-	br.ReadLE(&i)
-	br.ReadBE(&i)
-	assert.Equal(t, i, iorig)
+	br.ReadU32LE()
+	br.ReadU16BE()
 	val := br.ReadVarUint()
 	assert.Equal(t, val, uint64(0))
 	b := br.ReadVarBytes()
@@ -217,7 +178,7 @@ func TestReaderErrHandling(t *testing.T) {
 
 func TestBufBinWriterErr(t *testing.T) {
 	bw := NewBufBinWriter()
-	bw.WriteLE(uint32(0))
+	bw.WriteU32LE(uint32(0))
 	assert.Nil(t, bw.Err)
 	// inject error
 	bw.Err = errors.New("oopsie")
@@ -229,7 +190,7 @@ func TestBufBinWriterErr(t *testing.T) {
 func TestBufBinWriterReset(t *testing.T) {
 	bw := NewBufBinWriter()
 	for i := 0; i < 3; i++ {
-		bw.WriteLE(uint32(i))
+		bw.WriteU32LE(uint32(i))
 		assert.Nil(t, bw.Err)
 		_ = bw.Bytes()
 		assert.NotNil(t, bw.Err)
@@ -338,24 +299,24 @@ type testSerializable uint16
 
 // EncodeBinary implements io.Serializable interface.
 func (t testSerializable) EncodeBinary(w *BinWriter) {
-	w.WriteLE(t)
+	w.WriteU16LE(uint16(t))
 }
 
 // DecodeBinary implements io.Serializable interface.
 func (t *testSerializable) DecodeBinary(r *BinReader) {
-	r.ReadLE(t)
+	*t = testSerializable(r.ReadU16LE())
 }
 
 type testPtrSerializable uint16
 
 // EncodeBinary implements io.Serializable interface.
 func (t *testPtrSerializable) EncodeBinary(w *BinWriter) {
-	w.WriteLE(t)
+	w.WriteU16LE(uint16(*t))
 }
 
 // DecodeBinary implements io.Serializable interface.
 func (t *testPtrSerializable) DecodeBinary(r *BinReader) {
-	r.ReadLE(t)
+	*t = testPtrSerializable(r.ReadU16LE())
 }
 
 func TestBinWriter_WriteArray(t *testing.T) {