Puro.earth is a carbon removal standard and registry. Its credits are called CO2 Removal Certificates, or CORCs. Each CORC represents one metric tonne of verified carbon dioxide removed from the atmosphere and stored durably under an approved methodology.
That removal-only focus makes Puro different from broader standards such as Verra or Gold Standard. It does not mix avoided emissions and removals inside the same product story. For developers working on biochar, enhanced weathering, direct air capture or other CDR pathways, that can make the buyer narrative much clearer.
How the process works
A supplier has to demonstrate that the process removes more CO2 than it emits across the relevant system boundary. That means lifecycle evidence, methodology-specific data, independent audit and registry issuance. For biochar, the project team needs strong control over feedstock, pyrolysis process data, product use, permanence evidence and chain of custody.
- Supplier prepares the carbon removal claim and supporting evidence.
- The project is assessed against the relevant Puro Standard methodology.
- Independent verification checks the evidence and process.
- CORCs are issued into the Puro Registry for verified removals.
Who Puro tends to suit
Puro is usually most relevant where the project is genuinely a durable removal, the evidence chain is strong and the buyer strategy is aimed at CDR procurement rather than generic offsetting. It can suit suppliers who want to sell to corporate buyers looking for removals with clear durability labels and transparent registry tracking.
It may be less suitable where the project is mainly an emission reduction, where the process data is weak, or where the economics only work at low verification intensity. In those cases, compare options using the carbon registry comparison and biochar methodology guide.
Commercial implications
Removal credits can earn stronger prices than many avoidance credits, but the evidence burden is real. Buyers of durable removals tend to ask detailed questions about lifecycle accounting, durability, additionality, custody and issued certificate status. Developers should prepare a buyer pack before assuming premium pricing will arrive automatically.
Once volume looks plausible, compare methodology, verification and pricing assumptions before treating CORC revenue as bankable.
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