Check a bibliography for retractions
Paste your DOIs and find out which of the papers you are citing have been retracted or corrected since you read them. Every check runs in your browser against Crossref; nothing is uploaded and nothing is stored.
Why this is not obvious from the paper
A retraction happens after you have downloaded the PDF. The copy in your folder, in your reference manager, and in the draft you are writing does not change — the publisher's page does. Nothing tells you, and nobody is checking on your behalf. A well-known study of one fraudulent trial found that the overwhelming majority of citations to it after the retraction were made by authors who plainly had no idea.
What is checked
Crossref records retractions and corrections as a relation from the notice back to
the original paper, and publishers commonly prefix the title with
RETRACTED:
as well. Both are read here, and the notice's own DOI and date are shown so you can
go and read why. A clean result means Crossref holds no such notice — which is
the honest claim, and not the same as a guarantee that none exists anywhere.
Corrections are not retractions
They are reported separately here because they mean different things. A correction usually leaves the finding standing; a retraction withdraws it. Both are worth knowing about before submission, and neither is a reason to panic — a retracted source can still be cited deliberately, as long as you know that is what you are doing.
This checks retractions. A full audit also catches phantom DOIs, wrong years, mismatched journals and preprints that have since been published.
Audit your references — free30 references a day, no card.