The following carbon accounting methods are eligible for use within the Oncra accounting framework. The use of these methods is restricted by the requirements of the applicable Oncra Protocol. Please refer to our Guidelines for guidance.
| Source | Link | Realms |
| Gold Standard | https://www.goldstandard.org/tags/methodologies | Land |
| Verra | https://verra.org/project/vcs-program/methodologies/methodology-catalog/ | Land, Oceans |
| Nori | https://nori.com/documents, Cropland Methodology 1.3 | Land |
| Puro | https://puro.earth/carbon-removal-methods/ | Land, Constructions |
| SNK | https://nationaleco2markt.nl/methoden/ | Land |
| Yiping et al (2012) | https://worldbamboo.net/wbcx/Keynotes/KeynoteLouYiping.pdf | Land – Bamboo |
| INBAR | https://www.inbar.int/wp-content/uploads/2020/05/1574823296.pdf | Land – Bamboo |
| Climate Cleanup | http://constructionstoredcarbon.org | Constructions |
| Regen Network | https://registry.regen.network/methodologies/carbonplus-grasslands | Grasslands |
| SOCIALCARBON | https://www.socialcarbon.org | NbS |
| BCarbon | https://bcarbon.org/our-standards | Land |
| CAR | https://www.climateactionreserve.org/how/protocols/ | Land, livestock, diverse |