diff --git a/crypto/bls/bls_test.go b/crypto/bls/bls_test.go
index 9fd940103..ba4f9a497 100644
--- a/crypto/bls/bls_test.go
+++ b/crypto/bls/bls_test.go
@@ -145,7 +145,7 @@ func TestDuplicatedAggregate(t *testing.T) {
 // TestHashToCurve ensures that the hash-to-curve function in kilic/bls12-381
 // works as intended and is compatible with the spec.
 // test vectors can be found here:
-// https://datatracker.ietf.org/doc/html/draft-irtf-cfrg-hash-to-curve-16#appendix-J.9.1
+// https://datatracker.ietf.org/doc/html/rfc9380
 func TestHashToCurve(t *testing.T) {
 	domain := []byte("QUUX-V01-CS02-with-BLS12381G1_XMD:SHA-256_SSWU_RO_")
 	tests := []struct {
@@ -173,6 +173,16 @@ func TestHashToCurve(t *testing.T) {
 			"15f68eaa693b95ccb85215dc65fa81038d69629f70aeee0d0f677cf22285e7bf58d7cb86eefe8f2e9bc3f8cb84fac488" +
 				"1807a1d50c29f430b8cafc4f8638dfeeadf51211e1602a5f184443076715f91bb90a48ba1e370edce6ae1062f5e6dd38",
 		},
+		{
+			"a512_aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" +
+				"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" +
+				"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" +
+				"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" +
+				"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" +
+				"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
+			"082aabae8b7dedb0e78aeb619ad3bfd9277a2f77ba7fad20ef6aabdc6c31d19ba5a6d12283553294c1825c4b3ca2dcfe" +
+				"05b84ae5a942248eea39e1d91030458c40153f3b654ab7872d779ad1e942856a20c438e8d99bc8abfbf74729ce1f7ac8",
+		},
 	}
 
 	g1 := bls12381.NewG1()
diff --git a/wallet/wallet_test.go b/wallet/wallet_test.go
index 9704b91fc..de274202b 100644
--- a/wallet/wallet_test.go
+++ b/wallet/wallet_test.go
@@ -1,6 +1,8 @@
 package wallet_test
 
 import (
+	"bytes"
+	"fmt"
 	"path"
 	"testing"
 
@@ -9,8 +11,11 @@ import (
 	"github.com/pactus-project/pactus/genesis"
 	"github.com/pactus-project/pactus/state"
 	"github.com/pactus-project/pactus/types/account"
+	"github.com/pactus-project/pactus/types/amount"
+	"github.com/pactus-project/pactus/types/tx"
 	"github.com/pactus-project/pactus/types/tx/payload"
 	"github.com/pactus-project/pactus/util"
+	"github.com/pactus-project/pactus/util/encoding"
 	"github.com/pactus-project/pactus/util/errors"
 	"github.com/pactus-project/pactus/util/testsuite"
 	"github.com/pactus-project/pactus/wallet"
@@ -589,3 +594,27 @@ func TestTotalBalance(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Equal(t, totalBalance, acc1.Balance()+acc3.Balance())
 }
+
+func Test_sign(t *testing.T) {
+	prv, _ := bls.PrivateKeyFromString("SECRET1PDRWTLP5PX0FAHDX39GXZJP7FKZFALML0D5U9TT9KVQHDUC99CMGQQJVK67")
+	sender, _ := crypto.AddressFromString("pc1z5x2a0lkt5nrrdqe0rkcv6r4pfkmdhrr3mawvua")
+	receiver, _ := crypto.AddressFromString("pc1zt6qcdymkk48c5ds0fzfsaf6puwu8w8djn3ffpn")
+	amt, _ := amount.NewAmount(1.0)
+	fee, _ := amount.NewAmount(0.001)
+	lock_time := uint32(0x123456)
+
+	trx := tx.NewTransferTx(lock_time, sender, receiver, amt, fee, tx.WithMemo("test"))
+	fmt.Printf("msg to sign: %x\n", trx.SignBytes())
+	sig := prv.Sign(trx.SignBytes())
+
+	trx.SetPublicKey(prv.PublicKey())
+	trx.SetSignature(sig)
+
+	var buf bytes.Buffer
+	encoding.WriteVarInt(&buf, uint64(fee.ToNanoPAC()))
+	fmt.Printf("%x\n", buf.Bytes())
+
+	bz, _ := trx.Bytes()
+	fmt.Printf("%x", bz)
+
+}