fixed contract address handling

api/gateway/chain/client/rail_gateway_test.go

@@ -7,7 +7,7 @@ import (
 )
 
 func TestNewRailGateway_NormalizesRail(t *testing.T) {
-	gw := NewRailGateway(nil, RailGatewayConfig{Rail: "card_payout", Network: "tron"})
+	gw := NewRailGateway(nil, RailGatewayConfig{Rail: "card", Network: "tron"})
 	if got, want := gw.Rail(), discovery.RailCardPayout; got != want {
 		t.Fatalf("unexpected rail: got=%q want=%q", got, want)
 	}

api/gateway/chain/internal/service/gateway/service.go

@@ -223,6 +223,7 @@ func (s *Service) startDiscoveryAnnouncers() {
 		}
 		announce := discovery.Announcement{
 			ID:         discovery.StableCryptoRailGatewayID(string(network.Name)),
+			InstanceID: discovery.InstanceID(),
 			Service:    "CRYPTO_RAIL_GATEWAY",
 			Rail:       discovery.RailCrypto,
 			Operations: discovery.CryptoRailGatewayOperations(),