Hi, I think the stop alert sit on the trading workstation of seanote and when is triggered by received data, trading software automatically send order to broker. I think CyberTrader X2 or Pro alerts work like this.
Actually the alerts/stops are held on the trading company's servers so that if Seanotes or anyone else's system were to go down, the alert/stop would still work if triggered. To my knowledge all DAT platforms with stop capabilities work this way and therefore your stops will never be "seen" by ony other traders prior to them becoming live orders.