Supply Chain Component Provenance
Chain per-lot component provenance, issuer-signed at every supplier tier, into a ZK proof that the assembler can verify across the whole multi-tier chain.
For procurement and quality teams
Receiving component provenance as Excel sheets and supplier-submitted PDFs with no structural way to detect tampering several tiers back, solved by cryptographic provenance.
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Procurement leads and supply chain management at manufacturers (automotive, electronics, industrial equipment)
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Quality assurance teams setting up traceability and recall-response evidence at the component level
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Teams building per-component provenance chains for Digital Product Passport (DPP) compliance
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.
- 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.
- Proven fact
- the part carries a legitimate provenance chain
- supplier-internal transaction data
- not shown
- Login / keys
- not needed
- 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.
Lemma lets every supplier tier issue component attributes (country of origin, manufacturing lot, modification history, quality test results) as issuer-signed attestations, with per-component cryptographic links to upstream tiers. Supplier names, contract terms, and cost data stay under the issuer's control. What crosses to the receiving side is only a ZK proof: "this part was produced in a certified Tier-3 facility," "this lot passed the specified test threshold."
Autonomous procurement agents can verify the per-component provenance chain as a ZK proof before confirming an order. Tampering attempts, counterfeit lot injection, and gray-market entry are structurally detectable as chain-integrity breaks — execution stops at the boundary without tracing all the way upstream manually.
How this provenance chain fits your procurement structure and DPP / traceability requirements is what we map out in a first conversation.
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 copies | △ | ✗ | ✗ | Redaction work grows; the original is still unproven |
| Encrypt and store / send | ✓ | ✗ | ✗ | To verify, the receiver needs it disclosed after all |
| Lemma (ZK proof)the only one with all 3 | ✓ | ✓ | ✓ | The receiver just opens a link |
How it works — and how to start.
We help design disclosure scope and retention, run the PoC, and support production.
Start with a 30-minute call.
Tell us one component procurement path that carries the most provenance risk, in the first 30 minutes. No disclosure of supplier contracts or cost information required.
Related Use Cases
Find the case that matches your industry and problem
Browse all 36 use cases →TRY LEMMA
Run it yourself.
No sales call needed — start hands-on with Lemma's products.