diff --git a/internal/models/payment.go b/internal/models/payment.go
index d86d5f8..29766b0 100644
--- a/internal/models/payment.go
+++ b/internal/models/payment.go
@@ -29,6 +29,8 @@ type Payment struct {
 		Запрос будет отправляться по протоколу GRPC
 	*/
 	CallbackHostGRPC []string `json:"callbackHostGrpc" bson:"callbackHostGrpc"`
+
+	WalletAddress string // for crypto
 }
 
 func (p *Payment) Sanitize() *Payment {
diff --git a/internal/payment_provider/alchemy/provider.go b/internal/payment_provider/alchemy/provider.go
index a0791a4..2b6ba5a 100644
--- a/internal/payment_provider/alchemy/provider.go
+++ b/internal/payment_provider/alchemy/provider.go
@@ -6,6 +6,7 @@ import (
 	"gitea.pena/PenaSide/treasurer/internal/errors"
 	"gitea.pena/PenaSide/treasurer/internal/models"
 	"gitea.pena/PenaSide/treasurer/internal/models/alchemy"
+	"gitea.pena/PenaSide/treasurer/internal/repository"
 	"github.com/gofiber/fiber/v2"
 	"go.uber.org/zap"
 )
@@ -17,13 +18,15 @@ type Config struct {
 }
 
 type Provider struct {
-	logger *zap.Logger
-	config *Config
+	repository *repository.PaymentRepository
+	logger     *zap.Logger
+	config     *Config
 }
 
 type Deps struct {
-	Logger *zap.Logger
-	Config *Config
+	Repository *repository.PaymentMethodRepository
+	Logger     *zap.Logger
+	Config     *Config
 }
 
 func New(deps Deps) *Provider {
@@ -59,7 +62,18 @@ func (p *Provider) handleWebhook(ctx *fiber.Ctx) error {
 		if act.ToAddress != p.config.WalletAddress {
 			continue
 		}
-		//TODO: найти инвойс по act.Value и act.FromAddress
+		amountStr := fmt.Sprintf("%v", act.Value)
+		payment, err := p.repository.FindByWalletAddressAndAmount(ctx.Context(), act.FromAddress, amountStr)
+		if err != nil {
+			if err.Type() == errors.ErrNotFound {
+				return ctx.Status(fiber.StatusNotFound).SendString(fmt.Sprintf("payment not found: %s", err.Error()))
+			}
+			return ctx.Status(fiber.StatusInternalServerError).SendString(fmt.Sprintf("internal error while searching payment: %s", err.Error()))
+		}
+		_, err = p.repository.SetPaymentComplete(ctx.Context(), payment.PaymentID)
+		if err != nil {
+			return ctx.Status(fiber.StatusInternalServerError).SendString(fmt.Sprintf("failed to set payment complete: %s", err.Error()))
+		}
 	}
 	return ctx.SendStatus(fiber.StatusOK)
 }
diff --git a/internal/repository/payment.go b/internal/repository/payment.go
index e4c8bee..316b3ee 100644
--- a/internal/repository/payment.go
+++ b/internal/repository/payment.go
@@ -31,6 +31,8 @@ var PaymentFields = struct {
 	DeletedAt            string
 	RawPaymentBody       string
 	CallbackHostGRPC     string
+
+	WalletAddress string // for crypto
 }{
 	ID:                   "_id",
 	UserID:               "userId",
@@ -48,6 +50,8 @@ var PaymentFields = struct {
 	DeletedAt:            "deletedAt",
 	RawPaymentBody:       "rawPaymentBody",
 	CallbackHostGRPC:     "callbackHostGrpc",
+
+	WalletAddress: "walletAddress",
 }
 
 type PaymentRepositoryDeps struct {
@@ -156,3 +160,32 @@ func (r *PaymentRepository) SetPaymentStatus(ctx context.Context, paymentID stri
 
 	return &payment, nil
 }
+
+func (r *PaymentRepository) FindByWalletAddressAndAmount(ctx context.Context, walletAddress string, amount string) (*models.Payment, errors.Error) {
+	payment := models.Payment{}
+	filter := bson.M{
+		PaymentFields.WalletAddress: walletAddress,
+		PaymentFields.Amount:        amount,
+		PaymentFields.Completed:     false, //не завершённые
+	}
+	if err := r.collection.FindOne(ctx, filter).Decode(&payment); err != nil {
+		r.logger.Error("failed to find payment by walletAddress and amount on <FindByWalletAddressAndAmount> of <PaymentRepository>",
+			zap.Error(err),
+			zap.String("walletAddress", walletAddress),
+			zap.String("amount", amount),
+		)
+
+		findErr := errors.NewWithError(
+			fmt.Errorf("failed to find payment by walletAddress and amount: %w", err),
+			errors.ErrInternalError,
+		)
+
+		if err == mongo.ErrNoDocuments {
+			return nil, findErr.SetType(errors.ErrNotFound)
+		}
+
+		return nil, findErr
+	}
+
+	return &payment, nil
+}