Linked emissions and provenance, cradle-to-gate — anchored on-chain.
A traceability fabric that binds physical product flows to verifiable emissions data on an immutable blockchain ledger, delivering ISO 14067 compliant Product Carbon Footprints (PCF) and tamper-evident digital product passports for regulated supply chains.
Indicative bands — final scope confirmed after a 20-minute discovery call.
Practice positioning.
CAS combines supply-chain traceability, primary supplier data ingestion, and ISO 14067 carbon footprinting into a single product-level ledger anchored on a permissioned blockchain. Every batch, lot, or SKU carries a cryptographically signed record of origin, custody transfers, processing emissions, and allocation methodology — from raw extraction through the factory gate. The platform aligns with ISO 14067:2018 (PCF), ISO 14040/44 LCA principles, the GHG Protocol Product Standard, the EU Battery Regulation (2023/1542) digital passport requirements, CBAM embedded-emissions reporting, and the upcoming EU ESPR Digital Product Passport (DPP). Outputs are structured for verification by accredited bodies under ISO 14065 / 17029. We deploy on enterprise-grade distributed ledgers (Hyperledger Fabric, Polygon PoS, Avalanche subnets, or Besu) with off-chain content stored in IPFS/Arweave and only Merkle roots committed on-chain — keeping commercial data private while making provenance and PCF claims independently verifiable forever.
How CAS delivers.
Goal & scope
Define functional unit, system boundary (cradle-to-gate vs cradle-to-grave), cut-off rules, allocation strategy, and reference flows per ISO 14040/44 and ISO 14067.
Inventory & traceability
Deploy supplier portals, IoT capture, and chain-of-custody tokens. Bind every batch to upstream activity data, reference emission factors (ecoinvent, EF 3.1, IPCC AR6 GWP100), and primary supplier PCFs.
Impact assessment
Compute GWP100 per functional unit, attributional and consequential variants, biogenic carbon flagging, and uncertainty propagation (Monte Carlo).
Verification & disclosure
Generate ISO 14067 PCF report, third-party verifier dossier, customer-facing DPP, and CBAM CN-code declarations. Re-baseline annually with continuous improvement triggers.
What's included.
What you receive.
Standards & frameworks.
Why we anchor the PCF on a blockchain.
ISO 14067 demands transparent, reproducible, and verifiable Product Carbon Footprint claims. A permissioned distributed ledger gives every link in the supply chain a single, append-only source of truth — without forcing competing parties to trust each other or a central operator.
Tamper-evident provenance
Every batch event (origin, transformation, transfer, emissions assertion) is hashed and committed. Any retroactive edit breaks the cryptographic chain and is instantly detectable by any verifier.
Independent verifiability
Accredited VVBs (ISO 14065 / 17029) reproduce the PCF calculation directly from on-chain commitments — no reliance on the issuer's database snapshots.
Double-counting prevention
Smart contracts enforce mass-balance and burn-on-claim semantics so the same kgCO2e or low-carbon attribute cannot be allocated twice across customers or jurisdictions.
Privacy by design
Sensitive commercial data (volumes, suppliers, prices) stays off-chain in IPFS / Arweave or private channels; only Merkle roots and zero-knowledge proofs are public — confidentiality without sacrificing auditability.
Regulator & customer trust
CBAM authorities, EU DPP scanners, and downstream procurement teams query a single immutable record — cutting verification cycle time and the cost of disputes.
Interoperable carbon attributes
Tokenised low-carbon claims (e.g. green steel, low-CI aluminium, bio-circular plastics) move with the product across ERPs and trading platforms via open standards (ERC-1155, W3C VC, GS1 Digital Link).
Future-proof for Article 6 & SBTi
The same ledger can record corresponding adjustments, retirement events, and Scope 3 attribution — aligning product traceability with emerging sovereign and corporate accounting rules.
No vendor lock-in
Deployable on Hyperledger Fabric (private), Polygon PoS / Besu / Avalanche (public-permissioned), or sovereign chains. Open data schemas mean clients keep portability.
Cost-controlled architecture
Off-chain storage + batched anchoring keeps gas / fee exposure low and predictable, even at SKU-level granularity across millions of items.
- › L0 — IoT / ERP / supplier portal capture (signed payloads)
- › L1 — Off-chain store: IPFS / Arweave / private channels
- › L2 — Smart contracts: custody, mass-balance, PCF tokens
- › L3 — Anchoring chain: Hyperledger Fabric / Polygon / Besu
- › L4 — Verifier & DPP API: ISO 14064-3 evidence, GS1 Digital Link
- ⛓ Hashes, Merkle roots, custody events, claim issuance & retirement
- ⛓ PCF version IDs, methodology pointers, verifier signatures
- 🔒 Off-chain: raw activity data, supplier identities, prices, volumes
- 🔒 Off-chain: full LCI datasets, ecoinvent / EF references (licensed)
- 🧾 Public: zero-knowledge proofs of PCF correctness when required
Discuss this capability with CAS.
Senior practitioners brief governments, registries, project developers, and enterprise climate teams on implementation pathways.