Which one is the oldest known Kannada language inscription in the Kannada script?

Solution (By Examveda Team)

Halmidi inscription one is the oldest known Kannada language inscription in the Kannada script. This inscription is generally known as the Halmidi inscription and consists of sixteen lines carved on a sandstone slab. It has been dated to 450 CE and demonstrates that Kannada was used as a language of administration at that time.