CMARK Registry
Every Carbonmark-issued credit, publicly auditable.
Carbonmark issues digital carbon credits as tokens on public blockchains. This registry is built from the onchain record — every issuance, transfer, retirement and cancellation is verifiable via public ledger data.
Issued credits by project and vintage
One row per credit — a project and vintage. Sort by any column, search by project, developer or country, and expand a row for its figures on each chain it has lived on. Credits first issued on Polygon were cancelled there and re-issued on Base in August 2026; the Migrated column shows those tonnes, and Issued counts them once.
Onchain data as of 11 Sept 2026, 23:30 UTC · the network index advances every fifteen minutes.
| MSR-X: Verified Polymer Substitution Emission Reductions | XWorks | 18,892.86 | 17,871.86 | 124 | 18,768.86 | Listed on Carbonmark | |
| Urunday Afforestation Project | Nullaxitus | 10,000 | 9,670.63 | 323.09 | 9,676.91 | Listed on Carbonmark | |
| Gaïago Soil Revitalization Project for Cropland | Gaiago | 4,797 | 4,797 | 0 | 4,797 | Not listed | |
| Buriram Rubber Plantation Carbon Sequestration & GHG Emission Reduction Project | ETM Carbon Trade | 4,400 | 4,397 | 3 | 4,397 | Listed on Carbonmark | |
| Black Earth Organic Waste Compost | One Earth Fund | 2,973.02 | 2,966.96 | 6.06 | 2,966.96 | Listed on Carbonmark | |
| Black Earth Organic Waste Compost | One Earth Fund | 2,864.83 | 2,423.9 | 440.93 | 2,423.9 | Listed on Carbonmark | |
| Large Scale Sustainable Forestation Project in Khun Mae Kum Mee, Wung Chin, and Mae Yom-Mae Pang plantation, Phrae Province, Thailand | Ascend Bit | 2,499 | 500 | 1,681.19 | 817.81 | Listed on Carbonmark | |
| CO2 storage following the application of Limenet technology in Augusta site | — | 14.78 | 12.75 | 5.53 | 9.25 | Listed on Carbonmark |
Retirements by project
A retirement permanently removes a credit from circulation. One line per project across its vintages and both networks; expand a project for its newest retirement transactions, each linked to the network explorer.
Onchain data as of 11 Sept 2026, 23:30 UTC · the network index advances every fifteen minutes.
Each project lists its newest 25 retirements here, so a transaction search covers recent history only. The complete history of every credit is on its token contract on the network explorer — linked under each project.
| Project | Networks | Retirements | Retired (t) | Last retirement | |
|---|---|---|---|---|---|
| Large Scale Sustainable Forestation Project in Khun Mae Kum Mee, Wung Chin, and Mae Yom-Mae Pang plantation, Phrae Province, Thailand | BasePolygon | 175,753 | 1,681.19 | 11 Sept 2026 | |
| MSR-X: Verified Polymer Substitution Emission Reductions | BasePolygon | 3 | 124 | 8 Sept 2026 | |
| CO2 storage following the application of Limenet technology in Augusta site | BasePolygon | 219 | 5.53 | 4 Sept 2026 | |
| Black Earth Organic Waste Compost | BasePolygon | 40,937 | 446.99 | 21 Aug 2026 | |
| Urunday Afforestation Project | BasePolygon | 11 | 323.09 | 4 Aug 2026 | |
| Buriram Rubber Plantation Carbon Sequestration & GHG Emission Reduction Project | BasePolygon | 2 | 3 | 18 Feb 2026 | |
| Gaïago Soil Revitalization Project for Cropland | BasePolygon | 0 | 0 | — |
Methodology
How these figures are produced
- Source
- Event logs of the Carbonmark credit issuance modules and every credit token they have created, on the Polygon and Base networks, replayed into a ledger and cross-checked against each credit's live total supply. Marketplace listing status is derived from the Carbonmark API.
- Issued
- Tonnes minted by the credit issuance modules. Where a credit was cancelled on Polygon and re-issued on Base, the migrated tonnes are counted once.
- Retired
- Tonnes permanently retired (environmental benefit claimed) with a beneficiary, per the token's Retired event. Retirements on both networks are counted.
- Cancelled
- Tonnes removed from circulation by the credit issuance module without a retirement claim, excluding the Polygon-to-Base network migration.
- Outstanding
- Tonnes still in circulation: issued minus everything retired or cancelled, per network.
- Timestamps
- Block times. A “≈” marks a time estimated from neighbouring blocks while a network is still being indexed; it becomes exact once indexing reaches the network head.
- Updates
- The network index advances every fifteen minutes and this page refreshes every five. Last indexed 11 Sept 2026, 23:30 UTC. Polygon: at network head (block 93,642,919). Base: at network head (block 51,190,030).
- Contracts
- CMARK factory (Polygon, v1) · TVER factory (Polygon, v1) · CMARK factory (Base, v2) · TVER factory (Base, v2)
- Data
- The same data is available as JSON at https://www.carbonmark.com/api/registry.
Key facts
- The CMARK Registry lists every carbon credit Carbonmark has issued, read directly from the Polygon and Base blockchains rather than from an internal database.
- Each credit is one project and one vintage, issued as its own token. The registry shows tonnes issued, migrated, retired and outstanding for every credit, on each network it has lived on.
- Retirements and cancellations are exact counts of onchain events, not estimates: a burn is a retirement only when the same transaction emitted the token's Retired event, and a cancellation only when the issuance module's Canceled event fired.
- Credits first issued on Polygon and re-issued on Base in August 2026 are counted once under Issued; the Migrated column shows the tonnes that moved networks.
- "Listed on Carbonmark" means purchasable right now. It is derived from the same marketplace price feed that powers the Buy button on app.carbonmark.com and is never shown for a credit with no outstanding supply.
- The network index advances every fifteen minutes and the page refreshes every five. Each table states the time its onchain data was last read.
- The complete dataset is published as JSON at https://www.carbonmark.com/api/registry for anyone to verify or reuse.
Issue credits that anyone can verify
Carbonmark Direct puts new credits onchain for innovators and frontier projects, and every one of them appears in this registry.