[RandomCitizen12]

That's an interesting way to do a checksum

[nsenifty]

The metre is a basic checksum, but there are more elaborated systems (pathas) of chanting verses that aids in correct learning and memorization.

Some of it is described here - https://en.wikipedia.org/wiki/Vedic_chant#Oral_transmission

An example in action - https://www.youtube.com/watch?v=KLdq15ptqUs