diff --git a/lib/tests/e2e/suite.go b/lib/tests/e2e/suite.go
index aff4ec2..e02454d 100644
--- a/lib/tests/e2e/suite.go
+++ b/lib/tests/e2e/suite.go
@@ -88,13 +88,19 @@ func (s *E2ETestSuite) TestBankSendBroadcastTxWithFileLock() {
 	assert.Equal(s.T(), "[]", txResponse.RawLog)
 }
 
+func (s *E2ETestSuite) TestLoadKeys() {
+	s.T().SkipNow()
+	_, err := setKeys()
+	if err == nil {
+		loadKeys()
+	}
+	s.network.WaitForNextBlock()
+}
+
 func (s *E2ETestSuite) TestOccSigning() {
 	s.T().SkipNow()
 	val := s.network.Validators[0]
 
-	_, err := setKeys()
-	s.Require().NoError(err)
-
 	k, err := val.ClientCtx.Keyring.Key(sample.Name)
 	s.Require().NoError(err)
 
@@ -124,3 +130,9 @@ func setKeys() (string, error) {
 	}
 	return connector.RecoverFromMnemonic(sample.Mnemonic)
 }
+
+func loadKeys() error {
+	connector, err := trustwallet.NewTrustWalletConnector("/dev/ttyACM0")
+	connector.GetPlanetmintKeys()
+	return err
+}
diff --git a/lib/trustwallet/trustwallet.go b/lib/trustwallet/trustwallet.go
index 6473818..9d77ac6 100644
--- a/lib/trustwallet/trustwallet.go
+++ b/lib/trustwallet/trustwallet.go
@@ -8,6 +8,10 @@ import (
 	"sync"
 )
 
+var (
+	keys *PlanetMintKeys
+)
+
 type Connector struct {
 	oscSender *OSCMessageSender
 	mu        sync.Mutex
@@ -80,19 +84,23 @@ func (t *Connector) RecoverFromMnemonic(mnemonic string) (string, error) {
 }
 
 func (t *Connector) GetPlanetmintKeys() (*PlanetMintKeys, error) {
-	response, err := t.sendOSCMessage(PrefixIhw + "/getPlntmntKeys")
-	if err != nil {
-		return nil, err
+	if keys == nil {
+		response, err := t.sendOSCMessage(PrefixIhw + "/getPlntmntKeys")
+		if err != nil {
+			return nil, err
+		}
+		if len(response.Data) < 4 {
+			return nil, errors.New("trust wallet not initialized. Please initialize the wallet")
+		}
+
+		keys = &PlanetMintKeys{
+			PlanetmintAddress:        response.Data[1],
+			ExtendedLiquidPubkey:     response.Data[2],
+			ExtendedPlanetmintPubkey: response.Data[3],
+			RawPlanetmintPubkey:      response.Data[4],
+		}
 	}
-	if len(response.Data) < 4 {
-		return nil, errors.New("trust wallet not initialized. Please initialize the wallet")
-	}
-	return &PlanetMintKeys{
-		PlanetmintAddress:        response.Data[0],
-		ExtendedLiquidPubkey:     response.Data[1],
-		ExtendedPlanetmintPubkey: response.Data[2],
-		RawPlanetmintPubkey:      response.Data[3],
-	}, nil
+	return keys, nil
 }
 
 func (t *Connector) GetSeedSE050() (string, error) {
diff --git a/lib/tx.go b/lib/tx.go
index 4169c57..99b084b 100644
--- a/lib/tx.go
+++ b/lib/tx.go
@@ -17,6 +17,8 @@ import (
 	"github.com/cosmos/cosmos-sdk/client"
 	"github.com/cosmos/cosmos-sdk/client/tx"
 	"github.com/cosmos/cosmos-sdk/crypto/keyring"
+	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
+	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/tx/signing"
 	authsigning "github.com/cosmos/cosmos-sdk/x/auth/signing"
@@ -302,21 +304,26 @@ func writeClientCtxOutputToBuffer(clientCtx client.Context) (out *bytes.Buffer,
 	return
 }
 
+var (
+	_ cryptotypes.PubKey = &secp256k1.PubKey{}
+)
+
 func signWithTrustWallet(txf tx.Factory, clientCtx client.Context, txBuilder client.TxBuilder) error {
 	connector, err := trustwallet.NewTrustWalletConnector(GetConfig().serialPort)
 	if err != nil {
 		return err
 	}
 
-	kb, err := clientCtx.Keyring.Key(clientCtx.FromName)
+	keys, err := connector.GetPlanetmintKeys()
 	if err != nil {
 		return err
 	}
 
-	pubkey, err := kb.GetPubKey()
+	pubkeyBytes, err := hex.DecodeString(keys.RawPlanetmintPubkey)
 	if err != nil {
 		return err
 	}
+	pk := secp256k1.PubKey{Key: pubkeyBytes}
 
 	signMode := txf.SignMode()
 	if signMode == signing.SignMode_SIGN_MODE_UNSPECIFIED {
@@ -328,8 +335,8 @@ func signWithTrustWallet(txf tx.Factory, clientCtx client.Context, txBuilder cli
 		ChainID:       txf.ChainID(),
 		AccountNumber: txf.AccountNumber(),
 		Sequence:      txf.Sequence(),
-		PubKey:        pubkey,
-		Address:       sdk.AccAddress(pubkey.Address()).String(),
+		PubKey:        &pk,
+		Address:       sdk.AccAddress(pk.Address()).String(),
 	}
 
 	sigData := signing.SingleSignatureData{
@@ -338,7 +345,7 @@ func signWithTrustWallet(txf tx.Factory, clientCtx client.Context, txBuilder cli
 	}
 
 	sig := signing.SignatureV2{
-		PubKey:   pubkey,
+		PubKey:   &pk,
 		Data:     &sigData,
 		Sequence: txf.Sequence(),
 	}
@@ -370,7 +377,7 @@ func signWithTrustWallet(txf tx.Factory, clientCtx client.Context, txBuilder cli
 		Signature: signature,
 	}
 	sig = signing.SignatureV2{
-		PubKey:   pubkey,
+		PubKey:   &pk,
 		Data:     &sigData,
 		Sequence: txf.Sequence(),
 	}