I've been looking for something like this for months. Its the standard defining the layout of the 4 (yes 4) tracks used in all Automatic Ticketinng and Boarding passing, by the IATA. Sadly this one is for Sailing and Train travel, but they document states the format closely models airline tickets. 3:30am is much too early to parse so terse a standard

IATA ATB Magstripe Standard