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Once for your business. Five steps for every claim.

Your company gets verified once. After that, every testimonial and every case study follows the same five-step path. Here is the whole thing, including the parts that protect your customer from you, and you from us.

ONE-TIME

Your business gets verified first

Before any customer proof, Stamp verifies the company itself: the business registry record, the EU VAT number, and a reputation check by a human reviewer. On success you get a business verification certificate at a permanent public URL, a badge for your site, and entry to the directory. This step is free, always.

REGISTRY + VAT + REPUTATION · RENEWED ANNUALLY · REQUIRED FOR DIRECTORY LISTING

Stamp Certificate
Verified Business
Registry check✓ Matched
VAT (VIES)✓ Active
Reputation✓ Reviewed
Valid until9 Jun 2027
STMP-BV-2026-00147Public record →
stampcertified.com/dashboard/capture/new
Jane Doe
jane@acme.com
linkedin.com/in/janedoe
Send capture invite →
STEP 01

You start

Add your customer's name and email at the dashboard and Stamp sends them a guided capture invite, or upload an existing case study you already have. Capture takes your customer under five minutes, which is faster than asking them to review a document anyway.

EXPIRES AFTER 14 DAYS · REMINDERS AT DAY 3 AND DAY 7

How the capture flow works in detail →
STEP 02

Your customer answers, in their own words

Four guided questions: the situation, the change, the outcome they can put a number on, and a recommendation. An AI drafts the asset from their answers; the customer edits the draft, fixes the quote, and confirms the specific metrics. The customer picks the consent level too: named, or anonymised to an industry and size band.

THE CONSENT BANNER NAMES EVERY FIELD THAT WILL APPEAR PUBLICLY

stampcertified.com/r/···
What changed after working with this vendor?Sales cycle went from 10 weeks to 8 on average. The proof portfolio did the early convincing for us.
What was the outcome you can put a number on?20% shorter sales cycle, measured over two quarters.
STEP 03

They prove who they are, then confirm each claim

LinkedIn sign-in establishes that the person confirming is who they say they are and works where they say they work. Then every individual claim, each metric, the quote text, the narrative, gets an explicit confirm or flag. One flagged claim sends the asset to a human reviewer instead of forward.

IDENTITY IS HELD IN A REVIEWER-ONLY VAULT · THE PUBLIC PAGE SHOWS "JANE D." AT MOST

stampcertified.com/approve/···
JD
Signed in as Jane D.✓ LinkedIn identity verified
Procurement sign-off reduced from six weeks to five days✓ Confirmed
Last three reviews passed without a follow-up call✓ Confirmed
"Security review went from our biggest blocker to a formality."Confirm
STEP 04

A human reviewer signs off

A Stamp employee, never the vendor and never an algorithm alone, reviews the asset, the customer's confirmations, the source documents, and the automated prescreen side by side. Approve, flag, or reject. Every decision is logged to an audit table that is never edited.

DECISIONS ARE LOGGED IMMUTABLY

stampcertified.com/reviewer/review/···
Asset
Approver identity
Sources
Prescreen
DecisionApproveFlagReject
STEP 05

The certificate goes live, everywhere at once

A permanent public record at stampcertified.com, a 2-page PDF, and embeddable badges for your site, decks, and emails. The certificate carries an RFC 3161 cryptographic timestamp, so its issuance time is provable independent of any clock Stamp or you control. You cannot edit it after issuance. Neither can we, silently.

See the embeds in action →
Stamp Certificate
Verified Case Study
ClaimSales cycle reduced 20%
Confirmed by✓ Customer, named
Reviewed by✓ Stamp reviewer
TimestampedRFC 3161 · 9 Jun 2026
STMP-····-··········Public record →
Claim your free verified profile →

ONE-TIME BV. FIVE STEPS PER CLAIM. EVERY CERTIFICATE.

After approval

Where your proof lands.

A certificate is not a PDF in a drawer. The moment it is issued, it starts working in four places at once.

Your profile

The verified asset joins your public profile

Grouped with your other proof, with structured data search engines and AI assistants can read.

The directory

Listed and filterable by what you proved

Industry, outcome, customer size, region. Buyers filtering for your exact proof find you, not your category.

The long tail

It can generate a page of its own

When proof exists for an industry, outcome, and company profile, Stamp creates the page buyers search for. No proof, no page.

Your site

Embeds, pulling live status

Badges and widgets on your site, decks, and emails, all resolving to the public record.

And the network compounds.Every badge on every vendor's site strengthens the domain your proof lives on. Concentrate your verified proof in one industry or outcome and you earn a specialist badge on the category pages buyers browse. Browse the directory →

After issuance

What keeps a certificate honest after the day it is issued.

Asset certificates do not expire; once your customer has confirmed a result, it stays confirmed. Three mechanisms protect what that means.

Renewal

Business verification renews annually

The company-level certificate is re-checked every 12 months, with reminders at 60, 30, 7, and 1 days. Asset certificates carry their issuance date permanently and never lapse on their own.

Retraction

Consent stays live, and that's why buyers trust it

The customer can revisit their confirmation at any time. That ongoing power, not the certificate itself, is what makes a Stamp badge worth more than a logo on a wall.

Tamper-evidence

Any change is detectable

The certificate ID carries a content hash; the RFC 3161 timestamp anchors it to a moment in time. A certificate cannot be quietly rewritten after the fact, by anyone, including us.

What can be verified

Four asset shapes. Two of them anonymous.

Consent level is the customer's choice, not yours. Anonymous assets go through the exact same identity check and claim confirmation; what changes is only the public attribution.

Named

Testimonial

A confirmed quote with named attribution: person, role, company.

Named

Case study

Situation, approach, results, metrics, with named attribution.

Anonymous

Testimonial

The same confirmed quote, attributed to a role at an industry and size band.

Anonymous

Case study

Full verified narrative, anonymised attribution. Stamp scores the anonymisation risk before publishing.

"My customers won't go public" is not a blocker. An anonymous certificate still tells a buyer that a real, identity-checked person at a real company confirmed these specific numbers. That is more than most named, unverified case studies can say.

For the technically skeptical

The machinery, briefly.

What the RFC 3161 timestamp proves, and what it doesn't
A Timestamp Authority (DigiCert) cryptographically binds a hash of the certificate's content to a certified moment in time. It proves the certificate existed in exactly this form at that moment, and that not a single character has changed since. It does not prove the claim is true in an absolute sense; what makes the claim credible is the customer confirmation and reviewer sign-off documented above. We keep those two statements separate on purpose.
How personal data is handled
Text is redacted locally, on Stamp's infrastructure, before any AI model sees it. The reference customer's full name, email, and LinkedIn data live in a vault readable only by Stamp reviewers. The public page shows "Jane D." at most, and nothing at all for anonymous assets. Customers can retract consent at any time. The full picture lives on our security page.
Why the outcome can't be bought
Verification outcomes are decoupled from billing by structure: reviewers do not see payment status, and rejecting a paying vendor's asset has no commercial consequence for the reviewer. Stamp will not accept payment for a specific outcome, publish a claim a customer has not confirmed, or keep a certificate live after retraction. See pricing for what is actually paid for.
How long does verification typically take?
Capture takes the customer under five minutes. From there, business verification is usually completed the same business day, asset reviews within a business day of the customer confirming. The bottleneck is almost always how quickly the reference customer opens the email; reminders go out automatically at day three and day seven, and the invite expires at day fourteen.
What if my customer never responds?
The capture invite expires after fourteen days with no consequences to you. Your account is not charged for unverified attempts; you can re-invite the same customer or pick a different reference when the timing is better.
Can my customer remain anonymous?
Yes. The customer picks the consent level during their confirmation step, before the certificate is issued. Anonymous certificates go through the same identity check and claim confirmation as named ones; the only difference is the public attribution, which becomes a seniority band, function, and company size band instead of the customer's name and company. A buyer still sees that a verified person at a real company confirmed the result.
Why human reviewers, and not just an algorithm?
Automated prescreening catches the structured checks: claim shapes, format consistency, signs of fabrication. Judgement calls about whether a specific metric reads as misleading in context, or whether an anonymised attribution is too narrow to truly anonymise the customer, are still made by a named Stamp employee. The reviewer's decision is logged immutably with a written reason.
Start with the free step

The first certificate is the business verification. It is free.

Claim your profile, verify your business, and run your first capture this week.

Claim your free verified profile →