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CERT Foundation
For buyers

Certified Reduction Units — the credit you can defend.

A CRU represents one tonne of CO\u2082e reduced or removed, verified against a conservative methodology, serialised, and publicly traceable from issuance to your retirement certificate.

Provenance in one click

No PDFs from brokers. Verify any serial number, ownership class, vintage and retirement on the public registry.

Registry-grade attributes

Every CRU carries standard attributes at issuance — host country, methodology, vintage, sector and purpose.

Machine-readable data

Every issuance, retirement and attribute is exposed via a versioned REST API.

No systemic clawback risk

Good-faith retirements stand. Remediation targets the responsible party — not the buyer who retired.

Independent verification

Every CRU is verified by a CERT-accredited VVB — not the developer, not CERT. VVB independence is enforced through rotation limits and spot re-verification.

Aligned with the VCMI Claims Code
CERT publishes claims guidance aligned with the VCMI Claims Code so buyers can communicate credibly to investors, regulators and the public.