diff --git a/alby.go b/alby.go
index 7a0e0f9d..65205486 100644
--- a/alby.go
+++ b/alby.go
@@ -709,6 +709,18 @@ func albyInvoiceToTransaction(invoice *AlbyInvoice) *Nip47Transaction {
 		preimage = invoice.Preimage
 	}
 
+	var expiresAt *int64
+	if invoice.ExpiresAt != nil {
+		expiresAtUnix := invoice.ExpiresAt.Unix()
+		expiresAt = &expiresAtUnix
+	}
+
+	var settledAt *int64
+	if invoice.SettledAt != nil {
+		settledAtUnix := invoice.SettledAt.Unix()
+		settledAt = &settledAtUnix
+	}
+
 	return &Nip47Transaction{
 		Type:            invoice.Type,
 		Invoice:         invoice.PaymentRequest,
@@ -718,9 +730,9 @@ func albyInvoiceToTransaction(invoice *AlbyInvoice) *Nip47Transaction {
 		PaymentHash:     invoice.PaymentHash,
 		Amount:          invoice.Amount * 1000,
 		FeesPaid:        0, // TODO: support fees
-		CreatedAt:       invoice.CreatedAt,
-		ExpiresAt:       invoice.ExpiresAt,
-		SettledAt:       invoice.SettledAt,
+		CreatedAt:       invoice.CreatedAt.Unix(),
+		ExpiresAt:       expiresAt,
+		SettledAt:       settledAt,
 		Metadata:        invoice.Metadata,
 	}
 }
diff --git a/lnd.go b/lnd.go
index 82342c1c..06ab998d 100644
--- a/lnd.go
+++ b/lnd.go
@@ -7,8 +7,8 @@ import (
 	"encoding/hex"
 	"errors"
 	"sort"
-	"time"
 	"strings"
+	"time"
 
 	"github.com/getAlby/nostr-wallet-connect/lnd"
 	decodepay "github.com/nbd-wtf/ln-decodepay"
@@ -96,7 +96,7 @@ func (svc *LNDService) ListTransactions(ctx context.Context, senderPubkey string
 			continue
 		}
 		var paymentRequest decodepay.Bolt11
-		var expiresAt *time.Time
+		var expiresAt *int64
 		var description string
 		var descriptionHash string
 		if payment.PaymentRequest != "" {
@@ -108,17 +108,17 @@ func (svc *LNDService) ListTransactions(ctx context.Context, senderPubkey string
 
 				return nil, err
 			}
-			expiresAt = &time.Time{}
-			*expiresAt = time.UnixMilli(int64(paymentRequest.CreatedAt) * 1000).Add(time.Duration(paymentRequest.Expiry) * time.Second)
+			expiresAtUnix := time.UnixMilli(int64(paymentRequest.CreatedAt) * 1000).Add(time.Duration(paymentRequest.Expiry) * time.Second).Unix()
+			expiresAt = &expiresAtUnix
 			description = paymentRequest.Description
 			descriptionHash = paymentRequest.DescriptionHash
 		}
 
-		var settledAt *time.Time
+		var settledAt *int64
 		if payment.Status == lnrpc.Payment_SUCCEEDED {
 			// FIXME: how to get the actual settled at time?
-			settledAt = &time.Time{}
-			*settledAt = time.Unix(0, payment.CreationTimeNs)
+			settledAtUnix := time.Unix(0, payment.CreationTimeNs).Unix()
+			settledAt = &settledAtUnix
 		}
 
 		transaction := Nip47Transaction{
@@ -128,7 +128,7 @@ func (svc *LNDService) ListTransactions(ctx context.Context, senderPubkey string
 			PaymentHash:     payment.PaymentHash,
 			Amount:          payment.ValueMsat,
 			FeesPaid:        payment.FeeMsat,
-			CreatedAt:       time.Unix(0, payment.CreationTimeNs),
+			CreatedAt:       time.Unix(0, payment.CreationTimeNs).Unix(),
 			Description:     description,
 			DescriptionHash: descriptionHash,
 			ExpiresAt:       expiresAt,
@@ -140,7 +140,7 @@ func (svc *LNDService) ListTransactions(ctx context.Context, senderPubkey string
 
 	// sort by created date descending
 	sort.SliceStable(transactions, func(i, j int) bool {
-		return transactions[i].CreatedAt.After(transactions[j].CreatedAt)
+		return transactions[i].CreatedAt > transactions[j].CreatedAt
 	})
 
 	return transactions, nil
@@ -357,18 +357,17 @@ func NewLNDService(ctx context.Context, svc *Service, e *echo.Echo) (result *LND
 }
 
 func lndInvoiceToTransaction(invoice *lnrpc.Invoice) *Nip47Transaction {
-	var settledAt *time.Time
+	var settledAt *int64
 	var preimage string
 	if invoice.State == lnrpc.Invoice_SETTLED {
-		settledAt = &time.Time{}
-		*settledAt = time.Unix(invoice.SettleDate, 0)
+		settledAt = &invoice.SettleDate
 		// only set preimage if invoice is settled
 		preimage = hex.EncodeToString(invoice.RPreimage)
 	}
-	var expiresAt *time.Time
+	var expiresAt *int64
 	if invoice.Expiry > 0 {
-		expiresAt = &time.Time{}
-		*expiresAt = time.Unix(invoice.SettleDate, 0)
+		expiresAtUnix := invoice.CreationDate + invoice.Expiry
+		expiresAt = &expiresAtUnix
 	}
 
 	return &Nip47Transaction{
@@ -380,7 +379,7 @@ func lndInvoiceToTransaction(invoice *lnrpc.Invoice) *Nip47Transaction {
 		PaymentHash:     hex.EncodeToString(invoice.RHash),
 		Amount:          invoice.ValueMsat,
 		FeesPaid:        invoice.AmtPaidMsat,
-		CreatedAt:       time.Unix(invoice.CreationDate, 0),
+		CreatedAt:       invoice.CreationDate,
 		SettledAt:       settledAt,
 		ExpiresAt:       expiresAt,
 		// TODO: Metadata (e.g. keysend)
diff --git a/models.go b/models.go
index 4f56a251..f7ad3c42 100644
--- a/models.go
+++ b/models.go
@@ -135,9 +135,9 @@ type Nip47Transaction struct {
 	PaymentHash     string      `json:"payment_hash"`
 	Amount          int64       `json:"amount"`
 	FeesPaid        int64       `json:"fees_paid"`
-	CreatedAt       time.Time   `json:"created_at"`
-	ExpiresAt       *time.Time  `json:"expires_at"`
-	SettledAt       *time.Time  `json:"settled_at"`
+	CreatedAt       int64       `json:"created_at"`
+	ExpiresAt       *int64      `json:"expires_at"`
+	SettledAt       *int64      `json:"settled_at"`
 	Metadata        interface{} `json:"metadata,omitempty"`
 }
 
diff --git a/service_test.go b/service_test.go
index fecefee3..8cc49e45 100644
--- a/service_test.go
+++ b/service_test.go
@@ -111,6 +111,7 @@ var mockNodeInfo = NodeInfo{
 }
 
 var mockTime = time.Unix(1693876963, 0)
+var mockTimeUnix = mockTime.Unix()
 
 var mockTransactions = []Nip47Transaction{
 	{
@@ -122,7 +123,7 @@ var mockTransactions = []Nip47Transaction{
 		PaymentHash:     "payment_hash_1",
 		Amount:          1000,
 		FeesPaid:        50,
-		SettledAt:       &mockTime,
+		SettledAt:       &mockTimeUnix,
 		Metadata: map[string]interface{}{
 			"key1": "value1",
 			"key2": 42,
@@ -137,7 +138,7 @@ var mockTransactions = []Nip47Transaction{
 		PaymentHash:     "payment_hash_2",
 		Amount:          2000,
 		FeesPaid:        75,
-		SettledAt:       &mockTime,
+		SettledAt:       &mockTimeUnix,
 	},
 }
 var mockTransaction = &mockTransactions[0]
@@ -571,7 +572,7 @@ func TestHandleEvent(t *testing.T) {
 	assert.Equal(t, mockTransactions[0].PaymentHash, transaction.PaymentHash)
 	assert.Equal(t, mockTransactions[0].Amount, transaction.Amount)
 	assert.Equal(t, mockTransactions[0].FeesPaid, transaction.FeesPaid)
-	assert.Equal(t, mockTransactions[0].SettledAt.Unix(), transaction.SettledAt.Unix())
+	assert.Equal(t, mockTransactions[0].SettledAt, transaction.SettledAt)
 
 	// get_info: without permission
 	newPayload, err = nip04.Encrypt(nip47GetInfoJson, ss)