Puro.earth

Standard and registry for durable carbon removal credits, owned by Nasdaq.

Carbon & climateHelsinki, FinlandFounded 2018

Puro.earth runs the Puro Standard and Puro Registry for engineered carbon-removal credits, issuing CO2 Removal Certificates (CORCs) for atmospheric carbon stored for over 100 years. Founded in Helsinki by Antti Vihavainen and Marianne Tikkanen, the company was acquired by Nasdaq in June 2021. In 2025 Puro.earth surpassed one million CORCs issued and raised €11M Series B led by Nasdaq.

What Boreal Tech Brief reported

  1. #0397 Apr 2026 · News

    Mast Reforestation Delivers First Biomass Burial Carbon Credits to Royal Bank of Canada

    Seattle-based Mast Reforestation has delivered more than 80% of the removal credits from its MT1 project in Montana, where over 10 million pounds of wildfire-killed trees were buried in an engineered underground chamber. Puro.earth certified 4,277 credits, the largest issuance under its biomass storage methodology. Buyers include Royal Bank of Canada, CNaught, and Muir AI. Mast plans native-conifer reforestation on the site in spring 2026 and is expanding its burial pipeline.