On the Puro Registry you can view CO₂ Removal Certificates, or CORCs, that have been retired and the projects that issued them. CORCs are retired when a beneficiary makes a net zero or carbon neutrality claim that is supported by the CORCs’ carbon removal properties. Each CORC represents a Net Carbon Dioxide Removal volume of one (1) metric ton of Long-Term CO₂ Removal.

CO₂ Removal - or Carbon dioxide removal (CDR) - is an anthropogenic activity involving removal of CO₂ from the atmosphere and durably storing it in geological, terrestrial, or ocean reservoirs, or in products. Each project is verified annually by an independent auditor to ensure that they comply with the Puro Standard science-based methodologies.