cross–check 
/ˈkrɑ:sˌtʃɛk/ verb
cross–checks; cross–checked; cross–check·ing /ˈkrɑ:sˌtʃɛk/ verb [+ obj] : to use a different source or method to check (something, such as information or calculations)
▪ I cross-checked the changes against the original copy. [=I looked at the original copy to make sure that the changes were correct] ▪ You should cross-check your answers with a calculator.
▪ I cross-checked the changes against the original copy. [=I looked at the original copy to make sure that the changes were correct] ▪ You should cross-check your answers with a calculator.
— cross–check noun, plural cross–checks [count]
