A DOI does not make an AI citation correct: how to check the source

Separate the claim from its citation

Checking an AI citation means opening the original source and comparing what it says with the answer. An author list, journal name and DOI are not enough. The identifier could be mistyped, belong to another paper or lead to a genuine study that does not support the attached claim.

Copy the claim and its supposed reference separately. Imagine an answer saying a tool “reduces errors by 40%.” This is a hypothetical example, not a study result. The evidence you need concerns errors, the test conditions and the comparison, not merely a paper mentioning that tool.

Resolve the DOI, then match the metadata

A DOI is a persistent identifier for an object such as a research article. Paste a supplied code beginning with 10. after https://doi.org/ in your browser. Leave out any sentence-ending period that is not part of the identifier.

At the destination, compare the title, authors, year and journal with the citation. A working link to a different paper is not a valid reference. If it fails, check for copying mistakes and search the title before concluding anything. An access failure alone does not establish fabrication.

Search independently of the assistant

Crossref Metadata Search accepts a title, author, DOI or complete citation. Start with the title and add an author’s surname if the results are too broad. Open the publisher’s page or an identifiable repository record rather than relying on another summary that repeats the same reference.

A missing Crossref result is not proof that a paper is fake. Some documents lack DOIs, and not every DOI is registered through Crossref. Also check the named journal or institution. If the title, author and publication cannot be located, classify the citation as unverified instead of using it as evidence.

Read what actually supports the claim

Find the relevant passage in the abstract or full text. Searching for a number or phrase can help, but read its context. A scanned PDF may contain visible words that its text search cannot detect.

In the hypothetical 40% example, less time spent on a task is not the same as fewer errors. A test of one tool also does not establish the same result for every AI system. Record what was measured, who or what was tested and under which conditions before reusing a number.

If only the abstract is accessible, restrict the claim to what it establishes. Do not attribute unseen details to the full paper. When the study itself cites another paper for the finding, follow that reference to the original evidence where necessary.

Keep the evidence with the claim

Asking the assistant to check itself can suggest where to look. Its second answer is not independent confirmation. OpenAI’s accuracy documentation notes that a model can receive the correct context and still handle it incorrectly. Supplying documents through retrieval-augmented generation does not guarantee a correct conclusion either.

Save the verified link and the supporting passage or page alongside each claim. If you cannot establish that connection, remove the claim or clearly mark it as unverified. This applies even to a model that performs well in reliability comparisons. Success on other tasks cannot validate the particular reference in front of you.