Evidence
What goes into an evidence pack, and what comes out
An evidence pack is the record a verifier audits. It shows where a claim comes from, how each figure was produced, how certain it is, and what went wrong along the way.
The evidence chain
We prepare the evidence. Independent bodies verify it.
Prepared by Climate Ground
- 1InputsSatellite and radar observations, field sensors, farmer records and laboratory results.
- 2ChecksPlace, time, units and source tested; gaps and disagreements flagged.
- 3ModelsThe methodology's models estimate what cannot be measured directly, with uncertainty.
- 4ReviewA person signs off each result and every exception attached to it.
- 5Evidence packEvery figure labelled and sourced, ready for verification.
Independent
- 6VerificationAn accredited verifier checks the pack. The registry decides what is issued.
Raw data is always kept. A correction is logged as a new version and never written over the original.
Labels
Every figure says what kind of evidence it is, and where it stands
Evidence type: what kind of value it is
- Measured
- Read directly by a sensor, a laboratory or a field survey, with its calibration and its time.
- Modelled
- Calculated by a named model and version from measured inputs, with its uncertainty.
- Estimated
- Filled in where a measurement is missing, such as a cloud gap, and always shown as estimated.
Review status: where it is in the process
- Reviewed
- A person has checked the value and any exception attached to it.
- Pending review
- Waiting for a person. Pending values stay out of every total.
Neither label means verified. Verification is done by accredited, independent bodies.
Specimen
A specimen evidence pack
This specimen uses the illustrative figures from the soil example. Each line carries its label and its source.
| Line | Value and source | Label |
|---|---|---|
| Parcel | 2.4 haGNSS boundary, walked on the ground | Measured |
| Baseline | 5 soil coreslaboratory analysis, September 2026 | Measured |
| Practice | Winter cover crop, less ploughing14 optical passes, 5 radar passes, 6 farmer photographs | Measured |
| Gap | 19 days of cloudground cover estimated, drawn dashed | Estimated |
| Cross-check | 1 radar pass disagreed with a photographsurface water affected the radar | Reviewed |
| Change | 1.10 t CO₂e/ha, ±52%soil-carbon model, version named in the pack | Modelled |
| Claim | 0.53 t CO₂e/haconservative figure, about 1.3 t for the plot | Modelled |
| Exceptions | 2 raised, 2 resolvedthe cloud gap and the radar disagreement; reviewer QA-07, 2027-07-12 | Reviewed |
Ready for independent verification. Not a verified credit.
What makes it auditable
- Labels and sourcesEvery figure carries its evidence type and the source behind it.
- Raw data keptEvery correction is logged as a new version.
- Uncertainty statedShown beside the figure, never hidden in a footnote.
- Exceptions shownWith who resolved them, and when.
- Method and version namedSo the result can be reproduced from the same data.
Verification
Our work ends where verification begins
Climate Ground collects and checks the evidence, runs the methodology's models and drafts the monitoring report. The project developer submits it. An accredited validation and verification body checks it, and the registry decides what is issued.
Our words are evidence, auditable and ready for verification. We never call our own work verified.
Validation and verification bodies are “qualified, independent third-party auditors who are approved by Verra.”
Next step
Bring your evidence question
Tell us about the decision or the report the evidence needs to support, and what evidence you hold today.