uuid_time - extract the time at which the UUID was created
time_t uuid_time(uuid_t uu, struct timeval *ret_tv)
The uuid_time function extracts the time at which the supplied time-based UUID uu was created. Note that the UUID creation time is only encoded within certain types of UUIDs. This function can only reasonably expect to extract the creation time for UUIDs created with the uuid_generate_time(3) and uuid_generate_time_safe(3) functions. It may or may not work with UUIDs created by other mechanisms.
Theodore Y. Ts’o
libuuid is part of the util-linux package since version 2.15.1 and is available from https://www.kernel.org/pub/linux/utils/util-linux/.