Welcome to the Puro.Earth FAQ page, we address the most frequently asked questions our ecosystem has. If you have specific inquiries or seek more detailed information, feel free to reach out – we're here to help!

You can negotiate a bilateral agreement directly with an accredited CORC supplier or purchase CORCs through a third-party marketplace. has discontinued its online marketplace in 2022 and does not act as a counterparty to transactions. 

CORCs are available as spot purchases as well as through advance market commitments where the buyer agrees to buy CORCs from a future issuance at a pre-agreed price. 

Take a look at the supplier listing to contact suppliers directly. 

Review our partners page if you’d like to arrange the transaction through a marketplace.

CORCs can be utilized to neutralize residual emissions reported in a sustainability or annual report, or they can be resold. If you want to use them to neutralize emissions, then the certificates need to be retired in the Puro Registry so their ownership cannot be changed anymore. These CORCs are no longer tradable and onward sale of the indicated certificate numbers is prohibited. 

To retire your CORCs you need to identify the beneficiary of the CORCs, purpose, the emissions period, and the location. You will receive an official certificate stating that you have neutralized your emissions with carbon removal with the following information: 

  • name of the beneficiary 
  • amount of tonnes that were neutralized 
  • name of the carbon removal supplier 
  • carbon removal method 
  • date of payment 
  • tracking numbers of the CORCs 
  • a public link to the registry cancellation statement 

You can use the certificate in your sustainability reporting and corporate communications. You may activate CORCs in your account for different beneficiaries.

Most importantly, companies who buy CORCs can neutralize their carbon emissions with carbon removal if they retire the credits. 
Other benefits include: 

  • Being part of the solution - buyers accelerate the carbon removal economy. As volumes of carbon net-negative processes grow, more carbon is removed from the atmosphere. 
  • Telling the world - communicating your climate action delights customers, inspires employees, and influences peers. 
  • Creating carbon-neutral products or services - Once you calculate the carbon footprint of your product or service, you can bundle CORCs to each unit to make them carbon-neutral. 
  • Ease of reporting - As CORCs are scientifically measured they can be used to match Scope 1 (Direct), Scope 2 (Indirect), and Scope 3 (Indirect value-chain) emissions as reported in ESG, sustainability, and annual reports. 
  • Credibility - In the development of CORC, we meticulously catered to the needs of companies aspiring to meet ambitious climate commitments. Our focus is on providing high-quality carbon offsets to mitigate reputational risks associated with subpar alternatives.

No. The priority should always be to reduce your own emissions. Carbon removal credits should only be used for hard-to-abate emissions.

We work with independent third parties who verify all production net-negativity claims for removal certificates. At the moment our partners include DNV GL, a global leader in ISO certification, Bio Inspecta, and Energy Link Services, the full list can be found on our partners page.

The price of the CORC is determined entirely by the supplier. The CORC Carbon Removal Indexes  tracks the price of removing carbon from the atmosphere based on Puro Standard methodologies.

#Puroearth #PuroCO2removal #PuroCarbonRemoval . Please don't forget to tag on LinkedIn so we can help amplify the post. 

There are many carbon footprint consultants in our ecosystem. Please check our sales channel partners on our Partners page!

Yes, you can choose a specific methodology and check the country of origin via our supplier listing. A CORC is always equivalent to one metric ton of CO2, no matter the method used or what the country of origin is. The most important thing is the climate benefit of the removal. If you would like, you can negotiate a pre-purchase agreement for a specific supplier.

Offtakes, otherwise known as advanced market commitments enable you to secure future CORCs from projects in development. You can view current projects in development here. Simply contact the supplier to arrange your commitment.

Yes, you can. First, you need to calculate what is the carbon footprint of your product or service, then you can bundle the amount of CORCs to each unit that will make them carbon neutral.

Buying CORCs from our suppliers or partner marketplaces creates an economic driver to accelerate the development of the carbon removal ecosystem today. Carbon removal suppliers receive a new revenue stream, which allows them to invest in R&D, operations, and sales. CORC buyers neutralize their CO2 emissions and create carbon-neutral products and services for their customers.

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