'confirmed by checking' is correct and usable in written English.
You can use it when you want to emphasize that information has been double-checked or verified for accuracy. For example, "The accuracy of the report was confirmed by checking."
This can be confirmed by checking the European Environment Agency (EEA) Airbase database that compiles air quality data from across Europe.
...but a very fair and deft cluing of a perennially comic Scottish terrier, the DANDIE DINMONT, and easily confirmed by checking letters.
I already knew about one problem, which I confirmed by checking my free credit report — a ding for a late payment a few years back, which I had tried to clear up but had, in fact, not been removed.
The optimal CoMSIA model shows the Q2 of 0.505, R2ncv of 0.992 and its accurate predictive ability was confirmed by checking out an independent test set which gave R2pred value of 0.885.
Amplicon specificity was confirmed by checking the melting curve at the completion of 40 cycles.
The obtained values are then confirmed by checking them against domain knowledge.
(24) and confirmed by manual checking.
Prior to contacting clinicians, the vital status of all potentially eligible participants was confirmed by cross checking registry data with the death register for the state.
The validity of the charge distribution was confirmed by manually checking the model against density functional theory (DFT) charge distribution calculated using NWChem version 6.1.1.
(ii) For eight genotypes whose RowID are indicated with the superscript, the fate patterns of each genotype have been confirmed by model checking approach in the discrete model in [ 9], which are also consistent with the biological facts [ 35, 46, 49- 53].
For the children living in the overseas department, who were not covered by the national registry, cancer diagnoses were retrieved through the PMSI of the hospital (the only oncology department in the area; some data were available from 1995, with coverage exhaustive starting in 2004), each confirmed afterwards by checking the patients' medical records.
