- Compute the checksum in the view. Query speed will be unchanged, but the view code will grow a bit.
- Compute the checksum in a
_listfunction. Query speed will be (in principle) slower, since you execute code for every row for every query; but your views can remain simple.
/_utils/script/sha1.js. You can copy and paste the code if you want.
 Or consider SHA256 or SHA512 if possible.