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Proba Inset Units

Proba Inset Units

Verified, traceable certificates that move through your own supply chain, not a generic market. Each Inset Unit represents a 1 tCO₂e reduction, traced back to the named fertilizer, field, and season it came from.

How does it work?

science-backed methodologies

Science-backed methodologies

Quantify, monitor, and verify GHG reductions using methodologies purpose-built for fertilizer-related interventions, not a generic carbon protocol adapted to agriculture.

Proba methodologies
independent verification

Independent verification

Approved Verification & Validation Bodies (VVBs) independently review every project before certification, so nothing is issued on a self-reported claim.

Proba's approved VVBs
blockchain-secured registry

Secure, traceable registry

Every Inset Unit is recorded in the Proba Registry. Each one is unique, fully traceable, and backed by transparent data, from issuance to retirement.

Proba registry

Built for compliance

Claim Scope 3 reductions with confidence. Proba meets recognized global standards for climate integrity:

  • Aligned with SBTi and GHG Protocol for credible Scope 3 accounting

  • Grounded in the Proba Standard, independently audited each year against recognized carbon market integrity codes

  • Developed with the International Fertilizer Association (IFA) and industry leaders, ensuring both scientific rigor and sector relevance

  • Verified by independent third-party auditors before issuance, so every Inset Unit can be used with confidence by food companies, co-ops, traders, and fertilizer producers.

Curious whether Inset Units are a fit for your supply chain?

Share a few details and our team will follow up to walk through what's possible.