Metrology and calibration laboratory at night, auditable data evidence

Proof Engine.

Evidence-grade engine for carbon data. Full lineage, automatic reconciliation, explainability, and defensibility for every metric, emission, and report — built to survive external assurance under ISO 14064-3 and ISAE 3410.

Audit-Grade Evidence Engine

Track full data lineage from source signal to final disclosure. Every emission factor versioned, every calculation traced, every adjustment logged, ready for ISO 14064-3 verification.

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[WHAT WE DO]

From raw signal to audit-ready evidence.

Full Data Lineage

Every data point carries its full lineage — source system, timestamp, transformation applied, and emission factor version. Reproducible from signal to disclosure.

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Automatic Reconciliation

Cross-checks emissions data against ERP, invoices, meters, and production records. Flags discrepancies before they reach reports.

Explainability by Design

Every calculated metric comes with its full derivation: inputs, factors, assumptions, and formulas — readable by auditors, not just by engineers.

Assurance-Ready

Engineered for ISAE 3410 and ISO 14064-3 assurance engagements — with versioned emission factors, control evidence, and immutable audit logs.

The IAASB’s ISAE 3410 has guided limited and reasonable assurance on GHG statements since 2013. It is withdrawn from 15 December 2026, when ISSA 5000, which covers all sustainability information including GHG emissions, takes effect.

IAASB

ISAE 3410 (2012) · ISSA 5000 (2024)

ISAE 3410

Assurance framework for greenhouse gas statements — the standard Proof Engine is built to satisfy.

14064-3

IAASB assurance standard for GHG statements, replaced by ISSA 5000 from 15 December 2026.

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Sustainable logistics and low-carbon transportation

Corporate team in a meeting about climate compliance

Sustainability specialist analysing carbon emissions data

[OUR PURPOSE]

Proof Engine turns carbon data into defensible evidence — every metric traceable to its source, every calculation reproducible, every disclosure built to withstand external assurance.

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[THE PROOF ENGINE SOLUTION]

From data to defensibility.

Industrial operation with Carbonova carbon management

Immutable audit log and versioning of every emission factor, calculation, and adjustment across the full lifecycle of the inventory.

Automatic cross-reconciliation between ERP, meters, invoices, and production records — discrepancies flagged before reports are issued.

Assurance-ready evidence aligned with ISO 14064-3 verification and GHG Protocol accounting principles.

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[ON THE PLATFORM]

How it works in CarbonOS

Every number on the platform is defensible from the start: source, factor, transformation and ownership — ready for auditors, regulators and investors.

01 · TRACE

Full lineage for every data point

Every metric carries its chain back to the source — signal, emission factor, version and who touched it.

02 · RECONCILE

Automatic, explainable checks

Reconciliation across sources, with every adjustment explained — no black boxes.

03 · DEFEND

Always audit-ready

Audit-grade evidence for every report — GHG Protocol, ISSB, CSRD/ESRS — without the last-minute scramble.

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Evidence trail · log (demo)

Flows with lineage

100%

Reconciliation

● automatic

Evidence

audit-ready · versioned

Explainability

● per metric

illustrative data from the demo environment

Data lineageReconciliationAudit-readyGHG ProtocolISSBCSRD

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[Frequently asked questions]

Evidence engine for GHG audits: frequently asked questions

Straight answers about Proof Engine, the CarbonOS evidence layer for emissions audits. To see it work on your own data, book a demo.

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What is Proof Engine from Carbonova?

Proof Engine is the evidence layer of CarbonOS. It keeps the lineage of every emissions figure, from source data to final report, with the emission factor and version used, the transformations applied and who made each adjustment. It also reconciles sources and explains every metric, in line with the ISO 14064-3 verification standard.

What problem does Proof Engine solve in emissions audits, and for whom?

It avoids the year-end scramble in which teams rebuild where each number came from for the verifier. It serves sustainability managers, finance, internal audit and compliance teams at companies whose inventories are verified by third parties, whether for emissions trading systems, CBAM, ISSB-aligned disclosures or customer and lender requests.

How does Proof Engine work, and what does it record for each calculation?

Every data point that arrives through Signal Ingest is stamped with its source and time. For each calculation, Proof Engine records the inputs, the emission factor and its version, the formula and the assumptions. It then cross-checks sources such as ERP, invoices, meters, SCADA and production records and flags discrepancies before they reach a report.

Which emissions verification standard is Proof Engine aligned with?

ISO 14064-3:2019, which sets principles and requirements for verifying and validating greenhouse gas statements for organisations, projects and products. For assurance by auditors, the IAASB’s ISAE 3410 is withdrawn from 15 December 2026, when ISSA 5000 takes effect; ISSA 5000 applies to all sustainability information, including greenhouse gas emissions (IAASB, 2025).

How does Proof Engine connect with Carbon Intelligence and Compliance Hub?

Proof Engine sits underneath the other agents. It receives stamped data from Signal Ingest, records every calculation made by Carbon Intelligence and Supply Chain, and gives Compliance Hub reports in which every number can be opened down to its evidence. Governance uses the same trail to document policies and procedures, and Asset Graph tells it which asset each data point belongs to.

Does Proof Engine replace independent verification of the emissions inventory?

No. Verification or assurance is still carried out by an independent verifier or auditor, who issues their own opinion. Proof Engine prepares the ground: it hands over the full trail behind every number, with sources, factors, versions and adjustments, and lets anyone rerun any calculation. Carbonova does not verify, assure or certify inventories.

Normas de referência

This website is for institutional and informational purposes only. The information on it does not constitute a public offering of securities, financial advice, or a guarantee of future results. Carbonova operates in compliance with applicable local and international regulations (including CSRD/ESRS and ISSB) and follows emissions reporting and carbon market standards. All rights reserved © Carbonova Tecnologia LTDA.