Supply Chain ESG Compliance
Prove CBAM, EUDR, and DPP compliance through a cryptographic chain of supplier attestations, so you can verify regulatory conformance while protecting trade secrets such as purchase prices and contract terms.
Three voices from the front line.
- Procurement / supply-chain management
“We want ESG / customs-compliance info from suppliers, but not their actual transaction data”
- Regulatory / compliance
“We must prove EUDR / CBAM compliance across tiers, but supplier confidentiality is the wall”
- ESG lead
“We want to chain-verify suppliers' carbon intensity and origin without collecting raw data”
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
- a supply-chain structure that meets ESG / CBAM requirements
- cost, procurement volume and supplier-internal dealings
- 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.
Each supply-chain tier issues ESG attributes (emissions, origin, labor conditions) with an issuer signature, chained upstream into a multi-tier proof. Material details, supplier names and contract terms stay with each company; what leaves is only the compliance proof — "below the CBAM threshold," "EUDR-compliant." Double counting is structurally detected by per-material binding, and an autonomous purchasing agent can verify this before confirming an order.
See the technical details ↗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 regulation where compliance work concentrates today, in the first 30 minutes. No disclosure of supplier contracts or cost required.
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Run it yourself.
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