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Use case — Regulatory Attribute Proof

Store-Network License, Hygiene & Insurance Compliance

Verify that each store in a chain or franchise validly holds the required licenses, food-hygiene, and insurance without receiving the originals, and because revocation stays trackable, you can confirm not just what was submitted but that it is valid now.

Chains & franchises · Food service · Retail · Hospitality Plan Lemma Compliance
01 · WHO IT'S FOR

For chain HQ and area managers

Verify licenses, food-hygiene, and insurance across many stores without collecting certificate PDFs — eliminating forgery, expiry, and reuse risk.

  • Compliance and store-development teams at chain/franchise HQs

  • Teams verifying multi-store licenses, hygiene, and insurance in food service, retail, hospitality

  • Teams needing an evidence trail for store-opening review and renewals

02 · THE SHIFT

Hand over the source, or just the facts?

Nothing changes on the floor. Everything changes for the receiver.

① Your team just saves, as always.

Your team's existing screen
The usual step
Fill in the record and save
On save
A proof is attached (API, behind the scenes)
The document itself
never sent

② They just open a link.

Their browser — verification
Not tampered
Proven fact
holds the required permits, hygiene and insurance, valid
original certificates and store-internal data
not shown
Login / keys
not needed
Why Lemma
  • The document stays private — the record itself is never sent or disclosed.
  • Independent verification — the receiver just opens a link. No account, no keys.
  • Edits are detected — even a one-character edit fails verification.

Each store presents only a proof that it "validly holds the required license, hygiene, and insurance." Originals aren't handed over. Attributes are issuer-signed; HQ and auditors verify without seeing the contents, and revocation (expiry, withdrawal) is trackable.

(A lawful verification process for each license/insurance is assumed.)

See the technical details ↗
03 · HOW TO CHOOSE

Why the usual methods fall short.

Only work that needs all three at once — pass without exposing, independent verification, tamper-evidence — is Lemma's domain.

Method Pass without exposing Independent verification Tamper-evident What happens
Access control / permissions“Someone inside could have edited it” remains possible
Masking / redacted copiesRedaction work grows; the original is still unproven
Encrypt and store / sendTo verify, the receiver needs it disclosed after all
Lemma (ZK proof)the only one with all 3 The receiver just opens a link
04 · HOW IT WORKS

How it works — and how to start.

What you prove
Proveholds the required permits, hygiene and insurance, valid
Keep hiddenoriginal certificates and store-internal data
01 — youChoose the record to prove Start with the one flow where hand-offs cost you the most explaining.
Issue the proof
Senthash only
The documentnever sent
Issued 0x68d4…9f01
02 — you → themAdd issuance Call the API once when the record is finalized. The document itself is never sent.
The verifier's screen
Not tampered
SignatureIntegrityIssuer
03 — themLet the receiver verify They open a link — no account, no keys.

We help design disclosure scope and retention, run the PoC, and support production.

Start with a 30-minute call.

Tell us the one license with the heaviest verification risk, in the first 30 minutes. No disclosure of sensitive data required.

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Run it yourself.

No sales call needed — start hands-on with Lemma's products.