Does a missing DOI always mean the reference is fake?

No. It can also mean the DOI was copied incorrectly or the citation is incomplete.

Why compare title and authors too?

Because a valid DOI can still point to a different paper than the one you expected.

Who should use this page?

Anyone doing a quick DOI-first validation pass before deeper verification.

Research workflow tool

DOI checker

Check whether a DOI is valid, then continue into the verification flow to compare the title, authors, and publication year.

Example input

10.1038/s41586-020-2649-2

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DOI presence check

Quickly spot malformed or missing DOI values before deeper review.

Metadata comparison

Compare the DOI record against the title, authors, and year in the citation.

Fast screening

Use it as the quickest high-confidence check before opening the full verification flow.

Preview

Verify the DOI, then compare the citation metadata against the source record.

Video

What it does

DOI presence check

Next step

Continue to the tool that matches your task

Capabilities

Move from a claim to traceable sources with less friction

Find supporting literature, inspect source details, and continue with the right research workflow.

DOI presence check

Quickly spot malformed or missing DOI values before deeper review.

Metadata comparison

Compare the DOI record against the title, authors, and year in the citation.

Fast screening

Use it as the quickest high-confidence check before opening the full verification flow.

Use cases

How people use it

Use LitSource when you already know which claim, citation, or reference list you need to investigate.

Review a reference list

Check a batch of references before editing or submission.

Catch a copied DOI typo

Verify that the DOI actually resolves to the expected paper.

Triage imported citations

Screen imported references before spending time on manual cleanup.

FAQ

Questions before you start

Review common questions before searching for sources or checking citations.

Related workflows

Continue with nearby research checks

Move between source discovery and citation verification workflows without returning to the home page.

Verify citation authenticityOpen workflow Verify if a paper is realOpen workflow Fake citation checkerOpen workflow

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Continue with the right research tool

Start searching for sources or checking citations in LitSource.

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