Verified ShowPM serials usually appear online 30 to 60 minutes after the live TV broadcast. If a site claims to have "today’s serial" available at 8:05 AM for a 9:00 PM show, it is likely a scam or a repeat episode.
Taken together, the message typically signals that a module/firmware component called showpm has successfully verified a serial-related item (serial number, serial device, or serial-port handshake) at boot or runtime. showpm today serial verified