Soil carbon credits you can defend.
Terrabit's dual-validation methodology produces MRV-compliant credit packages with full audit trails — meeting the scrutiny of your ESG team, auditors, and regulators.
Three pillars of defensible carbon
Scientific Rigor
Every SOC estimate is validated by two independent methods: direct soil core analysis at certified laboratories (LOI + Walkley-Black) and satellite spectroscopy calibrated against ground-truth samples. Agreement within tolerance thresholds is required before any credit is issued. Disagreement triggers re-sampling — not estimation.
Protocol Compatibility
Terrabit methodology aligns with Verra VCS VM0042, Gold Standard Soil Carbon Activity, and CAR Soil Enrichment Protocol. We document the mapping between our methodology steps and each protocol's requirements. Buyers receive a protocol alignment matrix as part of the standard credit package — no interpretation required by your team.
Full Auditability
Every credit is backed by a complete chain-of-custody record — from GPS-logged soil sample extraction through laboratory analysis, satellite processing, model verification, and registry issuance. Buyers receive data room access with all underlying documentation. Third-party auditors have reviewed and attested to the methodology documentation.
Anatomy of a Terrabit credit package
Every verified credit comes with the full documentation stack your ESG team needs.
Baseline Report
Full baseline SOC characterization including sampling location map, laboratory analysis certificates, depth profile by field zone, and statistical summary with confidence intervals. This is the reference document against which all sequestration is measured.
Monitoring Data Package
Complete time-series monitoring dataset: annual sampling lab results, satellite spectroscopy time series (GeoTIFF), SOC estimation model outputs with uncertainty bounds, and temporal SOC change analysis showing the sequestration trend over the monitoring period.
Verification Model Outputs
Model run documentation including training dataset provenance (USDA SSURGO), cross-validation statistics against NRCS measurements, final SOC estimate with 95% confidence interval, and net sequestration calculation after permanence buffer deduction.
Registry Issuance Documentation
Signed and dated registry submission, issuance confirmation with serial numbers, protocol alignment matrix mapping Terrabit methodology to applicable standard requirements, additionality assessment, and permanence risk disclosure.
Permanent Record Link
Registry URL and serial number for every issued credit, providing permanent public record. Credits are marked retired upon purchase. Terrabit maintains a supplemental chain-of-custody archive accessible to buyers for the duration of their corporate reporting obligations.
We support your due diligence process
Terrabit is built for the questions your auditors will ask.
Data room access
Buyers receive access to a secure data room containing all underlying verification data — sampling logs, lab certificates, satellite datasets, model documentation. Accessible throughout your corporate reporting period.
Methodology white paper
A complete technical description of the Terrabit verification methodology — suitable for attachment to ESG disclosures, CDP questionnaire responses, and sustainability report appendices. Contact us to receive the current version.
Third-party verification statement
A template verification statement from an independent reviewer is available for buyers who need to demonstrate third-party validation of their offset purchases in annual reports or regulatory filings.
Direct team access
Amara Diallo and the Terrabit science team are available for calls with your ESG, sustainability, and procurement teams. We can walk through the methodology, answer auditor questions, and provide documentation attestations as needed.
Request a verification demo
We walk through a complete Terrabit credit package in a 45-minute session — from soil sample log to registry entry. Your ESG team walks away with enough to complete due diligence.