Jockey Club records are maintained through Interactive Registry, including transferring ownership, and retiring horses from racing. There are a number of useful tools that can also be accessed with a free Interactive Registry account.
Microchipping is an inexpensive, unobtrusive way to ensure reliable, life-long identification for horses. For these reasons, microchipping is quickly becoming a standard requirement in both racing and sport. All Jockey Club-registered foals from the 2017 crop on are microchipped. All horses who complete the Thoroughbred Makeover must have a Jockey Club registered microchip.