Hi,

When consolidating references, would it be possible to save which were not matched on CrossRef/Glutton ? Or the inverse - to confirm that a reference has been matched (or potentially enriched). I went through the code and as far I understand, there is currently no way to find this out, is that correct?

Ideally, could it be a part of the TEI XML, perhaps only after enabling a flag like enable_debug_references when calling the API?

I am currently starting a package that verifies references listed out by Grobid, and adding this would help prevent additional calls to CrossRef.

Is it something that would be useful to add? I am not a Java expert, but I can try taking a stab at it first and submit a PR.

Thank you in advance,
Jakub