DOI Checker — Verify a DOI Instantly

Paste a reference containing a DOI and EvalCite resolves it against CrossRef — then cross-checks the rest of the citation (title, authors, year, venue) against the record the DOI returns. A DOI that resolves to nothing, or to a different paper than the citation claims, is flagged immediately. Free, no signup.

What a DOI check catches

Unregistered DOIs

AI models and sloppy copy-paste both produce DOIs that were never registered. The syntax looks right (10.1016/j.example.2023.01.001) but resolving it returns nothing. An unresolvable DOI is a strong fabrication signal.

DOIs pointing at the wrong paper

Subtler and more dangerous: the DOI resolves — to a different article than the one cited. EvalCite compares the DOI's actual record (title, authors, year) against the citation text and surfaces the discrepancy as a mismatch with a field-level diff.

Metadata that doesn't match its own DOI

The paper is real and the DOI is right, but the citation around it has drifted — wrong year, wrong volume, misspelled author. The diff shows exactly which fields to fix, and the corrected .bib export rewrites the entry from the authoritative record.

How to check a DOI

1. Paste the full reference (or just the DOI with a title) into the checker.
2. EvalCite resolves the identifier and verifies the surrounding metadata in one pass.
3. Read the verdict and, if anything disagrees, copy the corrected BibTeX.

Frequently asked questions