Who's Really Verified? A Reality Check on Carbon Software Assurance

Audit ready isn't assurance. This benchmark tracks software/methodology verification only, not corporate inventories or security certifications.

Updated: October 9, 2025

Plenty of platforms say they are "audit ready." Far fewer have an independent verifier's signature on their software methodology. This post pairs a plain English explainer with a vendor table so you can see, at a glance, who is actually verified and who is just marketing.

What "Verification" Means Here

We include vendors only when there is public third party verification or validation of the software/methodology used to calculate emissions, typically under ISO 14064-3 (or ISAE 3000/3410).

Not included: corporate inventory verifications, SOC 2/ISO 27001 (security), or general "audit ready" claims.

Quick test for buyers

• Is there a named, independent verifier? (e.g., UL Solutions, SGS, Apex, Bureau Veritas, DNV, LRQA)
• Is the statement about the software/methodology itself?
• Is the assurance scope and level clear? (validation/verification; limited/reasonable)

The Benchmark Table

How to Use This as a Buyer

• For RFPs: Require a public assurance statement for the software/methodology, including scope and level.
• For CSRD/SOX alignment: Keep a copy of the statement with your audit binder and note the version/date.
• For internal sign-off: Confirm your calc engine + factors align with the assured scope.

Common Misconceptions

• "Audit ready" is not verified. It may mean good controls, not third party assurance of the calc engine.
• Inventory verification is not software verification. An auditor can verify a company's footprint without assessing the vendor's methodology.
• Security certifications are not methodology assurance. SOC 2/ISO 27001 are valuable but orthogonal.

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