Carbon credit tokenization with retirement your auditor can verify

We map every token to a registry serial number, retire on-chain and in the registry in one step, and give corporate buyers a certificate that stands up in an ESG audit. For project developers, that means a tradeable credit with a transparent price. For buyers, proof.

Retirement record

Illustrative
Project
Mangrove restoration, Gulf of Kutch
Registry
Verra VCS, project 2xxx; serials 0001 to 0500
Vintage
2024
Quantity
500 tCO2e
Retired by
Corporate buyer, against reported Scope 1 emissions
On-chain
Tokens burned; tx 0x3f9a...c21e
Registry
Retirement recorded; serial numbers marked retired
Certificate
Issued to buyer; verifiable by anyone with the link
Status
Sample record

The problems tokenization is supposed to solve

The voluntary carbon market lost buyer trust over three failures. A tokenized credit only has value if it fixes them.

Double counting

The same credit sold or retired twice. Our tokens carry the registry serial number; a token cannot be minted for a serial that is already tokenized or retired, and retirement burns the token and updates the registry in the same workflow.

Opaque pricing

Bilateral OTC trades with no visible price. Tokenized credits trade on a venue with an order book or on a transparent bulletin board, and every trade is time-stamped and visible to the issuer.

Weak retirement evidence

A PDF from a broker. Our retirement certificate links the buyer, the serials, the registry retirement record and the burn transaction. Anyone can verify it without trusting us.

Registries and standards

Each registry has its own issuance, transfer and retirement rules. We build to each registry's rules.

Registry or schemeCredit typeHow we connectNotes
Verra (VCS)Verified Carbon UnitsRegistry account, serial import, retirement on behalf of beneficiaryLargest voluntary registry; REDD+, renewables, cookstoves, blue carbon
Gold StandardVerified Emission ReductionsRegistry account and retirement workflowPremium credits with co-benefit reporting; strong corporate demand
American Carbon Registry, Climate Action ReserveEmission Reduction Tonnes, Climate Reserve TonnesRegistry account and retirement workflowRelevant for US buyers and California compliance-adjacent demand
India CCTSCarbon Credit Certificates under the Carbon Credit Trading SchemeStructured for the scheme's registry and exchange rules as they are notifiedCompliance market for obligated entities; offset mechanism for others. Rules evolving; we track them.
Renewable energy certificatesOne MWh of certified renewable generationIssuing body records, per jurisdictionOften tokenized alongside carbon credits for corporate Scope 2 claims
Article 6 corresponding adjustmentsInternationally transferred mitigation outcomesMetadata and host-country authorization tracked on the tokenRequired if the buyer intends to use the credit toward a national target

Tokenizing a credit does not change what the registry says about it. If the registry does not recognise the retirement, the token is worthless as an offset. This is why our retirement step is a single workflow that completes in the registry first, then burns the token.

What we build for carbon projects

Registry-mapped token contracts

ERC-1155 or ERC-7943 tokens where each class maps to one project, vintage and methodology, and each unit maps to one serial. Batch issuance, batch retirement, and transfer controls for regulated venues.

Retirement and certificate service

A buyer selects credits, states the purpose (Scope 1, 2 or 3, or a product claim), and receives a certificate once the registry and chain both confirm. Certificates carry a public verification link.

Corporate buyer portal

Browse projects by methodology, vintage, location and co-benefits. Buy, retire and export a report formatted for GHG Protocol, GRI and the disclosure framework your auditor uses.

Project developer portal

Upload issued serials, set reserve prices, list to the venue or to named buyers, and track retirements against your issuance with the registry reconciliation report.

Marketplace or venue integration

An order book or bulletin board within the platform, or listing on a licensed regional exchange where the credit type is eligible. Settlement in fiat or regulated stablecoin.

Quality and provenance data

Ratings, satellite and monitoring data, and registry documents attached to the token metadata so a buyer can assess the credit before purchase, and an auditor can assess it after.

Index and basket tokens

A token representing a defined basket (for example nature-based credits, vintage 2022 or later, rated BB or above) for buyers who want diversification without selecting individual projects.

Pre-issuance forward tokens

Forward sale of credits from a validated project ahead of verification, structured as a receivable with delivery risk disclosed. Used to finance project development.

Structuring and tax

Whether the token is a commodity, a security or a virtual asset in the buyer's jurisdiction; VAT and corporate tax treatment of credit trading in the UAE and India; and the SPV or trust that holds the registry account.

How a carbon tokenization project runs

Eight to fourteen weeks for a platform with one registry connection. Additional registries add two to three weeks each.

  1. Credit and project assessment

    Registry status, vintage, methodology, rating, corresponding adjustment status and buyer eligibility. We tell you which credits are worth tokenizing and which are not.

  2. Legal and tax classification

    Instrument classification in the issuer's and buyers' jurisdictions, the entity that holds the registry account, and the terms on which tokens are sold.

  3. Registry connection and contracts

    Registry account set-up, serial import, token contracts and the retirement workflow, tested end to end on testnet with a real registry sandbox where the registry offers one.

  4. Portals and reporting

    Buyer and developer portals, certificate generation, ESG report templates, KYC and payment integration.

  5. Audit and launch

    Contract audit, reconciliation test between registry and chain, operational runbook, then first issuance with a named pilot buyer.

  6. Operation

    Ongoing registry monitoring, retirement processing, buyer support and periodic reconciliation reports. Run by Kubermint under the service agreement, or handed to your team on the Enterprise plan.

For corporate buyers

If you buy credits to support a net-zero claim, the question your auditor will ask is whether the retirement is real, exclusive and attributable to you. Our certificate answers all three with public evidence. You also get the project documents, the rating and the registry record in one export, formatted for the disclosure framework you report under.

We can also act as your buying adviser: screening projects, negotiating price and handling the retirement so your sustainability team is not learning registry mechanics on the job.

For project developers

Credits sitting in a registry account earn nothing. Tokenizing them gives you a listed, priced, fractionable asset that smaller buyers can access and larger buyers can verify. Forward tokens let you raise development capital against credits that are validated but not yet verified, with the delivery risk disclosed and priced.

We handle the registry, legal and technical work. You keep the project.

Questions we are asked about carbon

Is a tokenized carbon credit a security?

Usually not, if it represents a spot credit with no promise of return. Forward tokens, index tokens and anything with pooled economics can be securities or collective investment schemes. Classification is jurisdiction-specific and is the first thing we settle.

Can the same credit exist as a token and in the registry at the same time?

Yes, and it must. The registry remains the legal record. The token is a claim on a specific serial held in a registry account controlled by the issuing entity. Retirement happens in the registry and is mirrored by burning the token.

What about credits already bridged to other protocols?

Some registries have restricted or reversed bridging into public token pools. We tokenize against registry accounts we control, under the registry's current terms, and do not use third-party bridges that the registry has not approved.

Do you handle India's compliance carbon market?

We structure for the Carbon Credit Trading Scheme as it is notified, including the registry and trading arrangements for obligated and non-obligated entities. The rules are still being detailed; we advise on what is settled and flag what is not.

Can buyers pay by card or bank transfer?

Yes. The buyer portal supports fiat payment with the token minted or transferred once funds clear. Stablecoin settlement is available for buyers who prefer it, where permitted.

Tell us about the credits

Registry, vintage, methodology and volume are enough to start. We will come back with a view on tokenizability, likely buyers and the structure within a week.