A reference architecture for recording approved generation, issuance, transfer, and retirement events alongside registry and verifier evidence.
Reference blueprint
Trace carbon-credit events without treating the ledger as the verifier.
A reference architecture for recording approved generation, issuance, transfer, and retirement events alongside registry and verifier evidence.
Reference architectureNot a deployed serviceValidation required
Make selected lifecycle events easier to reconcile while keeping project validity, methodology, measurement, and market eligibility with the authorised parties.
Illustrative architecture. Production suitability must be established for the target environment.
Operating flow
Follow the decision path, not a feature list.
Each stage needs a named actor, an authoritative input, a control decision, and evidence of the resulting state.
Submit
Project and measurement evidence enters through an approved source.
Verify
A recognised verifier assesses the evidence and methodology.
Authorise
The registry or issuer approves an eligible lifecycle event.
Record
The digital record links the credit identifier and supporting evidence.
Transfer or retire
Approved actions update the lifecycle record and reconciliation views.
Actors
Accountability attaches to roles.
The blueprint coordinates participants; it does not transfer every participant’s obligations to the technology provider.
Project operator
Submits project and measurement evidence
Independent verifier
Assesses evidence against an accepted methodology
Registry or issuer
Authorises issuance, transfer, and retirement
Holder or buyer
Receives and transfers eligible credits
Auditor or market operator
Reviews lifecycle records and exceptions
Controlled workflowRoles connect through explicit permissions, approvals, and evidence.
Controlled boundary
Be precise about what the architecture can prove.
A recorded event can be inspectable and tamper-evident while its source, legal effect, market outcome, or physical truth remains externally governed.
What the blueprint can govern
- Mapping between an authorised credit identifier and its digital record
- Role-based initiation and approval of in-scope lifecycle actions
- Tamper-evident history of submitted events and linked evidence
- Reconciliation views for issuance, transfer, and retirement
What the blueprint does not establish
- Project validity, additionality, and environmental claims
- Measurement accuracy and verifier independence
- Registry standing, legal ownership, and double-counting controls
- Market eligibility, liquidity, price, and regulatory treatment
Design inputs
Name the assumptions and dependencies before selecting components.
A
Before design
Assumptions to make explicit
- An authoritative registry and accepted methodology are identified.
- Source evidence is authenticated before an event is approved.
- Each digital record has a unique, reconcilable registry identifier.
- Correction, revocation, and dispute procedures are defined.
D
Across the system
Dependencies to diligence
- Registry and verifier interfaces
- Measurement, sensor, or oracle data
- Identity and approval controls
- Ledger and smart-contract components
- Accounting and reporting integrations
Diligence path
Turn failure modes into validation gates.
The target design should not proceed on architecture diagrams alone. Each material risk needs an owner, test, evidence source, and acceptance decision.
Risk map
False or incomplete source evidence
Duplicate issuance or an incorrect registry-to-token mapping
Divergence between registry and ledger state
Overstated environmental or market claims
Exposure of commercially sensitive project data
Validation gates
- 01
Reconcile a sample credit through issuance, transfer, and retirement.
- 02
Prove that only authorised roles can approve lifecycle changes.
- 03
Test duplicate, revoked, corrected, and disputed records.
- 04
Exercise source, registry, and integration outage scenarios.
- 05
Obtain methodology, legal, accounting, and market-eligibility review.
Reference architecture is not production approval.
The blueprint does not certify a product, validate source data, establish legal or regulatory treatment, or guarantee security, interoperability, performance, availability, cost, liquidity, or adoption.
Validate the blueprint
Test the carbon credits operating model against a real environment.
Use a workshop to map roles, source systems, controls, failure modes, evidence, and open decisions. Any production scope follows separate technical, legal, and commercial review.