diff --git a/cmd/notation/verify.go b/cmd/notation/verify.go
index d523aac92..387e045dc 100644
--- a/cmd/notation/verify.go
+++ b/cmd/notation/verify.go
@@ -8,7 +8,6 @@ import (
 	"reflect"
 
 	"github.com/notaryproject/notation-go"
-	"github.com/notaryproject/notation-go/log"
 	notationregistry "github.com/notaryproject/notation-go/registry"
 	"github.com/notaryproject/notation-go/verifier"
 	"github.com/notaryproject/notation-go/verifier/trustpolicy"
@@ -63,7 +62,6 @@ Example - Verify a signature on an OCI artifact identified by a tag  (Notation w
 func runVerify(command *cobra.Command, opts *verifyOpts) error {
 	// set log level
 	ctx := opts.LoggingFlagOpts.SetLoggerLevel(command.Context())
-	logger := log.GetLogger(ctx)
 
 	// initialize
 	reference := opts.reference
@@ -101,13 +99,16 @@ func runVerify(command *cobra.Command, opts *verifyOpts) error {
 		MaxSignatureAttempts: math.MaxInt64,
 	}
 
-	// core process
+	// core verify process
 	_, outcomes, err := notation.Verify(ctx, verifier, sigRepo, verifyOpts)
-	if err != nil {
-		logger.Error(err)
-	}
 	// write out on failure
 	if err != nil || len(outcomes) == 0 {
+		if err != nil {
+			var errorVerificationFailed *notation.ErrorVerificationFailed
+			if !errors.As(err, &errorVerificationFailed) {
+				return fmt.Errorf("signature verification failed: %w", err)
+			}
+		}
 		return fmt.Errorf("signature verification failed for all the signatures associated with %s", ref.String())
 	}
 
diff --git a/internal/envelope/envelope.go b/internal/envelope/envelope.go
index 8565bcf46..868e3363a 100644
--- a/internal/envelope/envelope.go
+++ b/internal/envelope/envelope.go
@@ -1,12 +1,10 @@
 package envelope
 
 import (
-	"errors"
 	"fmt"
 
 	"github.com/notaryproject/notation-core-go/signature/cose"
 	"github.com/notaryproject/notation-core-go/signature/jws"
-	gcose "github.com/veraison/go-cose"
 )
 
 // Supported envelope format.
@@ -15,21 +13,6 @@ const (
 	JWS  = "jws"
 )
 
-// SpeculateSignatureEnvelopeFormat speculates envelope format by looping all builtin envelope format.
-//
-// TODO: abandon this fature in RC1.
-func SpeculateSignatureEnvelopeFormat(raw []byte) (string, error) {
-	var msg gcose.Sign1Message
-	if err := msg.UnmarshalCBOR(raw); err == nil {
-		return cose.MediaTypeEnvelope, nil
-	}
-	if len(raw) == 0 || raw[0] != '{' {
-		// very certain
-		return "", errors.New("unsupported signature format")
-	}
-	return jws.MediaTypeEnvelope, nil
-}
-
 // GetEnvelopeMediaType converts the envelope type to mediaType name.
 func GetEnvelopeMediaType(sigFormat string) (string, error) {
 	switch sigFormat {
diff --git a/internal/envelope/envelope_test.go b/internal/envelope/envelope_test.go
index b3aea8346..d7f60fbb4 100644
--- a/internal/envelope/envelope_test.go
+++ b/internal/envelope/envelope_test.go
@@ -1,79 +1,9 @@
 package envelope
 
 import (
-	"encoding/json"
-	"errors"
 	"testing"
-
-	"github.com/notaryproject/notation-core-go/signature/cose"
-	"github.com/notaryproject/notation-core-go/signature/jws"
-	gcose "github.com/veraison/go-cose"
-)
-
-var (
-	validJwsSignatureEnvelope, _ = json.Marshal(struct{}{})
-	validCoseSignatureEnvelope   []byte
-	invalidSignatureEnvelope     = []byte("invalid")
 )
 
-func init() {
-	msg := gcose.Sign1Message{
-		Headers:   gcose.NewSign1Message().Headers,
-		Payload:   []byte("valid"),
-		Signature: []byte("valid"),
-	}
-	validCoseSignatureEnvelope, _ = msg.MarshalCBOR()
-}
-
-func checkErrorEqual(expected, got error) bool {
-	if expected == nil && got == nil {
-		return true
-	}
-	if expected != nil && got != nil {
-		return expected.Error() == got.Error()
-	}
-	return false
-}
-
-func TestSpeculateSignatureEnvelopeFormat(t *testing.T) {
-	tests := []struct {
-		name         string
-		raw          []byte
-		expectedType string
-		expectedErr  error
-	}{
-		{
-			name:         "jws signature media type",
-			raw:          validJwsSignatureEnvelope,
-			expectedType: jws.MediaTypeEnvelope,
-			expectedErr:  nil,
-		},
-		{
-			name:         "cose signature media type",
-			raw:          validCoseSignatureEnvelope,
-			expectedType: cose.MediaTypeEnvelope,
-			expectedErr:  nil,
-		},
-		{
-			name:         "invalid signature media type",
-			raw:          invalidSignatureEnvelope,
-			expectedType: "",
-			expectedErr:  errors.New("unsupported signature format"),
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			eType, err := SpeculateSignatureEnvelopeFormat(tt.raw)
-			if !checkErrorEqual(tt.expectedErr, err) {
-				t.Fatalf("expected speculate signature envelope format err: %v, got: %v", tt.expectedErr, err)
-			}
-			if eType != tt.expectedType {
-				t.Fatalf("expected signatureFormat: %v, got: %v", tt.expectedType, eType)
-			}
-		})
-	}
-}
-
 func TestGetEnvelopeMediaType(t *testing.T) {
 	type args struct {
 		sigFormat string