Every checkable claim, checked against ground truth.
AttestAlly — when you can’t afford an AI citation error.
Upload the document you need to be right — a court filing, an investor report, a research paper, a client memo. We verify every checkable claim against the authority that issued it, correct the errors, flag what can’t be verified — and return your document corrected, with a full audit trail: the AttestAlly certificate. Facts with no public record behind them? We re-check the document’s own math — do the totals add up, do the percentages hold — and we can check it line-by-line against your own files: the model, the accounts, the exhibits it was built from.
CourtListenerSEC EDGAR / XBRLPubMedClinicalTrials.govCrossref DOINVD / CVEUSPTO · FDA · USDA — more coming
Two ways to check a document
Some facts have a public record. Most of yours don’t.
A citation can be checked against the court’s own docket. A portfolio company’s
capacity factor cannot — there is no registry for it. So we check that against the one
record that does exist: your model, your accounts, your exhibits.
Against the public record
Checked against the official record
Every citation, trial number, paper and vulnerability id in your document, resolved against
the authority that issued it — the courts, PubMed, ClinicalTrials.gov, Crossref, NVD.
Wrong ones are corrected. Fabricated ones are flagged.
Legal citations, PMIDs, DOIs, NCT numbers, CVEs
Verified against an external register of record
Free under 1,000 words — you see the findings before paying
0 false confirmations across our 791-case adversarial citation benchmark.
Against your own documents · New
Source-pack review
Upload the report and the documents behind it. We take the figures in the report and
check them against the model, the accounts, the exhibits — corroborating the ones that
agree, flagging the ones that don’t, and telling you plainly which ones we could not
check and why.
IC memo vs the model · valuation report vs the accounts · brief vs the exhibit
Figures, dates and totals matched on concept, unit and period — a 45.7%
in your report is compared against the 0.457 in your model, not mistaken for a
hundred-fold error; a figure for one project is never checked against another’s
The document’s own math re-checked — a total that isn’t the sum
of its parts, a percentage that’s arithmetically false, a growth rate its
own endpoints contradict, the same figure stated two different ways —
caught even when every number looks fine on its own
Spreadsheets, Word, PDF and CSV accepted as sources
Works where no public registry exists — private companies, internal models
Corroboration against your own records — not verification against an external
register. A different, narrower claim, and we say so on the certificate.
Both return the same AttestAlly certificate, with a full audit trail. Use either on its own, or
both on one document. Add your source documents on
the form below — the panel marked “Check it against your own documents”.
What neither does: invent a verdict. A figure we cannot tie to a source is reported as
not checked, with the reason — never as agreement, and never as an error.
The free preview shows exactly what we found. A certified pass is priced at no more than half what the same document costs in frontier-model tokens — and capped at $5 during early access ($9 when we also check your source documents). Your exact price and the side-by-side frontier comparison appear the moment you paste a document below.
$0
Free preview — up to ~1 page. Every checkable claim found; the riskiest verified free against ground truth.
≤ 50%
of the frontier-model token cost for the same document — shown beside your price before you decide.
$5
hard cap for a single document during early access — $9 when a source pack is attached. Every price rounded to a clean quarter-dollar — deliberately cheap.
🔒
Nothing releases without payment. The certified document and full audit trail unlock only when you pay.
You keep everything we deliver — the corrected document and signed certificate are yours permanently. What WE delete, 24 hours after delivery, is our copy of your document and its results; a text-free attestation survives on our side so the verification can always be proven. Step away mid-job? We can email the finished package, or a link that resumes exactly where you left off.
A price is a business choice, not a factual claim — the certificate at the end still reports, truthfully, exactly what was checked. Full pricing & the frontier comparison →
Legal. Every citation resolved against CourtListener — the right
case, not merely a real one.Finance. Every reported figure reconciled to the filing of record at
SEC EDGAR.Medical & scientific. Trials and studies checked against
ClinicalTrials.gov and PubMed.
We scan your document, find every checkable claim, and verify the first three free. You see exactly what we found — then unlock the full certified pass. Nothing is released without payment.
Paste your document — we'll check it now
Live · verified against real registries
PDF, Word, PowerPoint, Excel, OpenDocument or text — or drag it onto the box below, or just paste.
0 words
Enter it now — we’ll check it straight away, and it covers the full release after your free preview.
Your quote arrives in writing, and the finished package follows automatically — even if you close this tab. Nothing else is ever sent.
Check it against your own documents — the model, the accounts, the exhibits
Add the documents this one was built from and we will corroborate the figures in your
report against them, flag any that disagree, and tell you plainly which figures we could
not check and why. This is corroboration against your own records — not
verification against an external register of record.
Worth filling in. If your source documents cover more than one project or period, this
is what tells us which figures belong together — without it we will leave them
unchecked rather than guess.
Word and PDF sources are read in your browser — only the extracted text is sent.
Spreadsheets are uploaded so we can read the row labels and values that make the check
worth doing.
Or try one:Brief with a mis-cited caseMemo — law, medicine & a paperCorrectly cited passage
Or price it without uploading anything
An estimate from length alone. The real number comes from your actual document — paste it above and we'll tell you exactly.
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checkable claims found
Paste a document above and we will tell you exactly what we found.
Unlocking releases: your corrected document (clean and redline, in your file format) · the certificate (PDF) · the complete audit trail.
Best value
Prepay & go
—
Pay up front. We spin up the resources immediately and deliver your certified document + audit trail.
Pay after preview
—
See the full list of what we'll verify first. Pay only to unlock and release the certified result.
We'll send your saved preview and binding price to this address — nothing else, no sign-up.
🔒 Results are released only after payment. The free preview shows what we found and verifies the first claims — the certified document and complete audit trail unlock on payment, or against a beta access code.
To reliably attempt this through a top frontier model — re-reading the document and
researching every claim — runs an estimated — in tokens
(averaged across today's Anthropic, OpenAI & Google flagships),
and it would still ship silent errors. AttestAlly verifies every claim for
—.
This is not a hypothetical failure mode. These are court records and published corrections from the last three years.
