For instance if the input is

1. \operatorname{A\ }
2. \nolimits

the check phase returns the hashes

1. \operatorname{A\ } -> d973b2312d0068bb33c7d9aef1a99121a8b3eb98
2. \nolimits -> 7dbb64cdb1df7868a962f14cf5455096de298899

But instead of returning the actual rendering those are error messages.