Sanctioned filings,
citation by citation

The ten cases

Run September 24, 2026 with the default check (engine 0.5.0, register data of June 30, 2026). One count per citation the court listed. Each case page has the rows.

What the replays show about our check

Across the 73 citations the ten courts listed, the default check marks 31 "Check this", 19 "Cannot verify" and 23 "Found". 18 of the 19 "Cannot verify" rows are Westlaw numbers: no open register can look those up, so the report lists them for a check on Westlaw or Lexis.

The Found rows are not all alike. Of the 23, 13 are real cases that a court found were cited for something they do not say, and 2 name the wrong court. The default check does not read what a case holds, and it does not compare the court in the parenthetical; the opt-in deep check reads the passage, and it was not run for these pages. In 5 rows there was no quotation long enough to check, and 1 is the case a court found real. The other 2 are misses. Their pages say why: Whiting v. City of Athens.

How the list was built

Every page starts from a public court decision: the opinion or order that imposed the sanction and, where it holds the fuller list, the court's earlier order to show cause. We read each decision and copied the citations the court itself listed, as the court quotes the filing. We added nothing to the court's list. Where the court says its list is partial, the page says so.

The ten cases come from the court decisions collected in Damien Charlotin's AI Hallucination Cases database, the same public collection behind the court-found set on Measurements. We chose cases that lawyers and later courts discuss by name, and whose decisions list the citations themselves. Mata v. Avianca comes first on both counts.

How to read a replay

• As filed is the citation as the court quotes the filing. Where the decision or the filing gives the quoted words, they are shown too, because the quote check needs them.
• What the court said is in the court's words when it is in quotation marks, with the page. Text without quotation marks is our summary of the decision.
• What the register holds is a direct lookup of that volume and page in our register of court opinions. A Westlaw number is a document number, not a page, so no open register can look it up.
• Our default check today is the row the checker returns now, with no language model: Check this, Cannot verify or Found. Where it missed something the court found, the page says so.

What we write, and what we leave out

The court's words appear only in quotation marks, with the page. Our own sentences say what the register holds and what the check returned. We name the case as captioned and no lawyer. We do not describe anyone beyond what the court wrote. If we have misread a decision, write to hello@proofread.law and we will correct the page.

What the replays do not tell you

• Whether the check would have caught everything in these filings. Some courts list only part of what they found, and each page says when.
• Whether a case is still good law. This is not a citator.
• How the check does on filings nobody has sanctioned. For that, see the filed-brief numbers on Measurements.

In some of these cases the other side found the citations first. The same check works on an opponent's brief: here is how to check every citation in it.

Check a draft before you fileSee a full sample report