The verification layer beneath durable carbon removal. Measured at source, audited by independent verifiers, and traceable end to end.
Modeled estimates. Self-reported data. Verification funded by the party being verified. The market has no shortage of credits — it has a shortage of evidence.
Buyers are being asked to trust numbers they can't check, produced by methodologies they can't audit, verified by parties with a financial interest in the outcome. That's not a market — that's a liability.
Estimates built on assumptions instead of instruments. If the model is wrong, every credit downstream is wrong.
When the developer picks and pays the verifier, independence is a claim — not a structure.
Methodologies behind paywalls, raw data never published. Trust without transparency is just branding.
We rebuilt the verification stack from the instrument up. Sensors in the field. Independent verifiers paid by the registry, not the developer. Raw data published alongside every credit.
Four stages. Each one produces an artefact the next stage depends on — and anyone can audit.
Field instruments log removals continuously. Satellite and soil data cross-check every reading against the site's baseline.
An accredited verifier — assigned by rotation, paid by the registry — audits the batch and signs a public attestation.
Credits enter the registry with a unique ID, the full data trail, and the verifier's signature permanently attached.
Buyers retire against their targets. The record is permanent, public, and impossible to double-count.
Different science, different timelines, different costs — held to the same measurement and verification bar.
Agricultural residue is pyrolysed into a stable carbon form and applied to soil, where it resists decomposition for 500–1,000 years while improving water retention and yield.
Crushed basalt spread across farmland reacts with rainwater and atmospheric CO₂, forming stable bicarbonate that eventually reaches the ocean — the planet's own thermostat, sped up.
Industrial-scale filters pull CO₂ directly from ambient air. The captured carbon is mineralised underground in basalt formations, where it becomes rock within two years.
Native-species restoration on degraded land, monitored by LiDAR and ground plots. Buffer pools and long-term stewardship contracts protect against reversal risk.
Every project below publishes its raw measurement data. Hover to see the numbers.
Eleven smallholder mills converting rice husk waste into biochar, replacing open-field burning across 4,200 hectares of paddy.
Native dipterocarp restoration on degraded logging concessions, monitored by drone LiDAR every quarter with community stewardship agreements.
Geothermal-powered capture with basalt injection. Injected CO₂ mineralises into carbonate rock within 24 months — verified by core sampling.
Every credit CarbTrust issues carries its full provenance: the instrument that measured it, the verifier who signed it, the methodology version applied, and the exact site coordinates.
Your auditor can trace any tonne in your portfolio back to source without asking us for anything. That's the point — infrastructure that doesn't require trusting the operator.
See the buyer platform →We stopped buying credits we couldn't explain to our auditor. CarbTrust was the first platform where the answer to "how do you know?" wasn't a brochure.
Rigorous measurement isn't a burden — it's leverage. Projects that can prove their numbers command better prices and longer contracts.
Board scrutiny, auditor questions, journalist enquiries. Build a removal portfolio where every answer is already documented.
Traditional registries record what developers submit. We generate the measurement ourselves through instrumentation we install and maintain, assign verifiers by rotation rather than developer choice, and publish the raw data alongside every credit. The registry function is the last step, not the whole product.
We do, from a pooled fee collected at issuance. Developers never select or pay their own verifier, and verifiers are rotated across projects. It's the same principle that separates auditors from the companies they audit — structural independence rather than a stated commitment.
Credits are only issued against measured removals, so under-delivery shows up as fewer credits rather than unbacked ones. For reversal risk on biological pathways, we hold a buffer pool funded by a percentage of every issuance, and buyers are made whole from that pool if a reversal is confirmed.
Our methodologies are built against the ICVCM Core Carbon Principles and our claims guidance follows the VCMI Claims Code. We also structure retirement records to satisfy GHG Protocol reporting and the emerging EU CRCF framework. Documentation for each is available on request.
Yes, and we encourage it. Every offtake agreement includes site access rights. We coordinate visits directly with developers and can arrange technical walkthroughs with the verifier who audits the site.
Spot purchases start at 100 tonnes. Multi-year offtake agreements — which is where most of the pricing advantage sits — typically start at 1,000 tonnes per year. We'll tell you honestly if a smaller volume is better served elsewhere.
Work with us
Tell us whether you're removing carbon or accounting for it, and we'll show you the part of the platform that matters to you.