The Terrabit Platform
End-to-end soil carbon MRV — from field sampling to verified credit package. Three integrated modules working in sequence.
Request a DemoThree modules, one integrated pipeline
Field Measurement
Trained field technicians extract stratified soil cores at standardized depth intervals (0–30, 30–60, 60–90 cm) across enrolled acreage. Samples follow chain-of-custody protocols from extraction through certified laboratory analysis using LOI and Walkley-Black methods. Sampling density: minimum 1 composite sample per 40 acres.
Remote Sensing
Sentinel-2 SWIR1 (1610nm) and SWIR2 (2190nm) band reflectance data — combined with Landsat 9 OLI2 thermal infrared — is cross-correlated against ground-truth samples to build a field-calibrated spectral model. Revisit frequency: 5-day Sentinel-2 repeat cycle provides continuous SOC monitoring between sampling campaigns.
Verification Engine
An ensemble ML model trained on the USDA SSURGO Iowa/Illinois soil survey dataset and validated against NRCS direct measurements integrates field and satellite data into a final SOC estimate with 95% confidence intervals. Outputs: registry-ready credit package, methodology disclosure, and permanent chain-of-custody record.
Measurement parameters
Precision tolerances and data sources used in every Terrabit verification.
| Parameter | Method | Precision | Data Source |
|---|---|---|---|
| Soil Organic Carbon (%) | LOI + Walkley-Black cross-check | ±0.3% |
Certified soil laboratory |
| Sampling depth intervals | Mechanical core sampler | ±2 cm |
Field technician + GPS logging |
| SWIR1 reflectance (1610nm) | Sentinel-2 MSI Level-2A | ±3% reflectance |
ESA / Copernicus Open Access Hub |
| SWIR2 reflectance (2190nm) | Sentinel-2 MSI Level-2A | ±3% reflectance |
ESA / Copernicus Open Access Hub |
| Thermal Infrared Band | Landsat 9 OLI-2 / TIRS-2 | 0.1K NEdT |
USGS EarthExplorer |
| SOC model output | Ensemble ML (gradient boosting + RF) | 95% CI reported | Terrabit verification model v2.3 |
| Bulk density | Undisturbed core method | ±0.02 g/cm³ |
Field measurement |
Output file formats
Baseline Report
PDF + structured JSON with all sampling locations, lab results, and spatial metadata.
Monitoring Dataset
GeoTIFF satellite time-series + CSV tabular SOC estimates by depth and location.
Credit Package
Registry-formatted submission file + methodology disclosure + uncertainty statement.
Registry integration layer
Terrabit output is formatted for compatibility with the leading voluntary carbon standard registries. Compatibility means methodology alignment — not pre-certification.
Verra VCS
VM0042 CompatibleMethodology aligns with VM0042 (Improved Agricultural Land Management). Output files formatted for VCS project description and monitoring report submission templates.
Gold Standard
Soil Carbon ActivityMethodology compatible with Gold Standard Soil Carbon Activity requirements including additionality assessment, leakage calculation, and permanence risk disclosure.
CAR
Soil Enrichment ProtocolAligns with Climate Action Reserve Soil Enrichment Protocol v1.1 sampling methodology, depth interval requirements, and baseline calculation approach.
See the platform in action
We walk through a real verification workflow — from soil sample log to credit package — in a 45-minute session with your team.