Puro.earth Standard and Registry

Puro.earth Oy is a Finnish limited liability company based in Helsinki, according to its legal notice. It provides registry, standards and governance for engineered carbon dioxide removal, and states it was the first engineered CDR standard and registry and is approved by the ICVCM as a CCP-eligible programme.

The Puro Standard defines quantification methodologies for biochar, enhanced rock weathering, direct air capture and ocean storage, geologically stored carbon, carbonated materials and others. Certified removals are issued as CO2 Removal Certificates (CORCs) on the Puro Registry. The site cites over 100 certified projects, 338 registered suppliers, 896 buyers and Puro Connect APIs.

• Puro Standard: methodologies for biochar, ERW, DAC, carbonated materials and more.
• Puro Registry: issuance and tracking of CORC certificates.
• Puro Connect APIs: programmatic access for integration.
• Preliminary Assessment: early eligibility check for projects.
• Carbon Removal Indexes: price benchmarks for buyers.
• Environmental Attributes Registry: registry for agricultural carbon intensity.

Vietnamese biochar or bioenergy developers can certify rice-husk biochar projects under the Puro Standard to sell CORCs. Corporates in Vietnam can buy certified removals for net-zero plans. Consultants and MRV providers can align monitoring with Puro methodologies.

Suppliers receive a recognized standard and registry that buyers such as Microsoft and BCG already use. Buyers gain a single registry with transparent methodologies and carbon removal price indexes. APIs (Puro Connect) allow integration with other systems, and ICVCM CCP approval supports integrity requirements.

Engineered carbon removal is moving toward standardized, registry-backed certificates as corporate and compliance buyers demand integrity. A Puro official said at a Singapore forum in August 2026 that Indonesia could deliver large biochar removal volumes in Southeast Asia, signaling growth for regional suppliers.

Operator Puro.earth Oy, Business ID FI31144162, Helsinki; legal notice last updated 20 March 2026. Site states 74% CDR market share and 1.9 million tonnes removed. Partners shown include Microsoft, Climeworks, Exomad and CarbonFuture.