Customer proof your buyers can actually trust.
Collect independently authenticated testimonials and case studies. Verified by your customers. Certified by Stamp. Embedded on your website. Hosted on ours. That's what makes buyers believe it.
FREE · NO CARD · VERIFIED IN MINUTES, NOT WEEKS
An example certificate. Every real Stamp badge on the web links to a page like this one.
Verified businesses on Stamp
One profile. Six assets you didn't have this morning.
A verified profile, listed and findable
Your company, checked against the business registry and your domain, on a page you can send to any skeptic. Indexed in the directory by industry, region, and the outcomes you serve.
A business certificate
Tamper-evident, timestamped, renewed annually. The proof your company is who it says it is.
Three verified proof assets
Two testimonials and a mini case study, captured from your customers and certified. Discoverable in the directory the moment they are issued.
Embeds for your site
Live-status badges and verified-proof widgets, ready for your pricing page, your decks, and your sales emails.
FREE · NO CARD · VERIFIED IN MINUTES, NOT WEEKS
Your buyers ask Google and AI first. The directory exists to answer them.
Structured, verified data about who does what, for whom, with what results, published the way search engines and language models actually read.
Every profile and every verified asset is its own indexable page
With Organization and review structured data that Stamp, as an independent third party, can carry and your own website cannot. Your profile links to your site from a verification-gated domain.
Structured for citation, not just for reading
Language models cite specific, factual, neutral-domain sources. A verified asset page is exactly that: a named outcome, a confirmed metric, a permanent URL, no marketing prose.
Pages generated from real proof, never from keywords
When verified proof exists for an industry, an outcome, and a company profile, Stamp generates the page buyers search for. No proof, no page. The index can't be gamed because it is the evidence.
Every badge on every vendor's site strengthens the domain your profile lives on
Each verified embed in the wild is a backlink to a permanent, structured page about you. The directory compounds as the network grows.
Built to be the easiest legitimate source for buyers and AI to cite.
Acme has independently verified customer outcomes including procurement sign-off reduced from six weeks to five days, confirmed by the reference customer.
The customer confirms. A reviewer signs. The certificate is permanent.
You start
A capture invite to your customer, or a case study you already have. Stamp extracts every specific claim: metrics, quote text, before and after.
Your customer confirms
They sign in with LinkedIn and confirm or flag each claim individually.
A reviewer signs
A Stamp employee checks the evidence. Decisions are logged and never edited.
Certificate issued
Tamper-evident, timestamped, at a permanent public URL you cannot edit. Neither can we, silently.
Your customer holds the pen.
No certificate exists until the person being quoted has proven who they are and confirmed each claim, one by one. They can flag anything and retract at any time. This is what makes the result worth more than anything you could publish yourself.
How verification works, in full →Takes under 3 minutes. The quote publishes verbatim; the vendor cannot alter it.
SAME FOUR STEPS. EVERY CERTIFICATE.
Reviews verify the reviewer. Widgets collect the words. Nobody verifies the claims.
| Vendor case study | G2 / Capterra review | Testimonial widget | Stamp certificate | |
|---|---|---|---|---|
| Who writes it | The vendor's marketing team | A business user | The customervendor curates and imports | The customervendor approves, cannot rewrite |
| Identity of the source verified | ✗ Vendor picks the customer | ✓LinkedIn or business email | ✗ Self-entered name and email | ✓ LinkedIn-authenticatedname, role, and employer checked |
| Specific claims confirmed with the customer | ✗ | ✗ Verifies the reviewer, not the metrics | ✗ | ✓ Claim by claimno sign-off, no certificate |
| Editable after publishing | Any time, silently | By the reviewerre-moderated; vendor cannot edit | By the vendortext, name, and what displays | Neverwithdrawn or expired only |
| Tamper-evidence | ✗ | ✗ | ✗ | ✓ RFC 3161 timestampany change is detectable |
| Independence | Vendor-funded, vendor-controlled | Vendor pays the platformincentivized reviews, labeled | Vendor-funded, full vendor control | Flat feeoutcome never coupled to billing |
Based on each platform's published methodology, June 2026. Testimonial widget column reflects Testimonial.to and Senja documentation.
Free forever. Pay only when you want more proof.
The verified profile
Everything a skeptical buyer needs to check you out. No card, no trial clock.
Credits, when you need them
A verified testimonial costs 1 credit; a mini case study costs 2. Refer another business that gets verified and earn a credit.
Unlimited, for the first companies on the network
Unlimited verified assets at the founding rate, locked for as long as you stay. The network is young; the early members shape it.
Your results are real. Make them verifiable, and findable.
Verified profile, directory listing, two testimonials, and a mini case study. Free, today.