Methodology Standards & Verifier Engines
Athlas Verity operates a suite of professional-grade, compliance-aligned Verifier Engines — one per carbon asset class. Each engine embeds an auditable, satellite-first, conservatively biased estimation workflow and publishes a full methodology document for independent review.
Athlas Verity Green Carbon Verifier Engine
Terrestrial forest & land-based carbon measurement, monitoring and verification.
The AV-GC001 engine quantifies net CO₂-equivalent removals from terrestrial projects using a satellite-first, ground-calibrated, conservative pipeline aligned with Forest Inventory Profile and Value-Chain Profile crediting rules.
Satellite Biomass Estimation
GEDI & SRTM canopy height/biomass retrievals fused with optical NDVI for wall-to-wall aboveground carbon density mapping.
Field Plot Calibration
Network of ground-truth plots calibrates satellite-derived estimates through regression against measured AGB per hectare.
Conservative Emission Factors
Species-specific wood density and root-to-shoot ratios applied; default factors used where location data is unavailable.
Leakage & Buffer Accounting
Activity-shifting and market leakage deductions plus a non-permanence risk buffer retained per credit.
Athlas Verity Blue Carbon Verifier Engine
Coastal & marine carbon — mangroves, seagrass and tidal wetlands.
The AV-BC001 engine verifies net CO₂ removals and avoided emissions from coastal blue-carbon ecosystems using forest profile-aligned methods, with explicit treatment of soil carbon and permanence risk.
Ecosystem-Resolved Pools
Aboveground, belowground, deadwood, litter and soil organic carbon pools resolved separately per coastal ecosystem type.
Blue Carbon Flux Model
Net sequestration from biomass accumulation and soil accretion with tidal hydrology correction.
Sediment Accretion Rates
Soil organic carbon accumulation derived from dated sediment cores and erosion/subsidence adjustment.
Permanence & Disturbance Guard
Elevated non-permanence buffer to protect vulnerable coastal carbon against storm, sea-level rise and land-use pressures.
Athlas Verity Renewable Energy Verifier Engine
Solar, wind and clean-energy emission avoidance verification.
The AV-RE001 engine verifies baseline-and-methodology-correct emission reductions from renewable energy displacement, using combined-margin grid baselines and independently metered output.
Baseline Grid Emissions
Counterfactual baseline derived from the combined margin (build margin + operating margin) of the regional grid emission factor.
Net Displacement Calculation
Verified metered energy output converted to avoided CO₂ using the approved baseline emission factor.
Additionally & Leakage
Investment and barrier additionality screening; upstream fuel-chain leakage accounted where material.
Metered Verification
Independent meter readings and telemetry cross-checked against generation records to prevent over-crediting.
Athlas Verity Carbon Dioxide Removal Verifier Engine
Engineered & novel carbon dioxide removal verification.
The AV-CDR001 engine verifies permanent, durable carbon dioxide removal using rigorous mass-balance and lifecycle accounting, with registry-grade serialized units for on-chain retirement.
Mass-Balance Carbon Accounting
Full lifecycle mass balance tracking captured CO₂ from atmosphere to durable long-term storage medium.
Durability & Permanence
Storage durability classification (century-scale+) with modelled decline curves and monitoring schedule.
Energy & Leakage Footprint
Net removal accounting subtracts embedded and operational emissions of the capture process and supply chain.
Chain-of-Custody & Registry
Unique serialized removal units tracked in registry with immutable on-chain retirement records.
Athlas Verity Nature-based Solution Verifier Engine
Ecosystem restoration & nature-based carbon integrity.
The AV-NBS001 engine verifies net carbon removals and holistic ecosystem outcomes for nature-based restoration, integrating carbon accounting with quantified environmental co-benefits.
Integrated Ecosystem Accounting
Combined carbon pools across vegetation, soil and peat measured through unified satellite-field workflows.
Co-Benefit Verification
Biodiversity, community and water-security co-benefits assessed against safeguard and sustainable-development criteria.
Additionally & Baseline
Scenario-based baseline (with-project vs without-project) validated by land-use history and legal additionality screens.
Risk-Weighted Buffering
Disturbance, reversal and uncertainty risks reflected in an evidence-weighted non-permanence buffer pool.
Methodology Profile Library
Each Verifier Engine draws on a library of 44 neutral methodology profiles. A profile defines the measurement tier, uncertainty treatment, required supporting evidence and the satellite data bundle used to estimate a project. Profiles are applied as conservative overlays on top of the core accounting chain — they refine parameters and evidence requirements, they do not change the underlying calculation. The Athlas AI recommends the most suitable profile from project data; the project owner may override the recommendation.
Green Carbon
13 profilesVerified Afforestation & Revegetation (Remote-Sensing SI)
Satellite-measured · conservative adjustment −10%
Forest Protection — Jurisdictional Deforestation Risk Mapping
Satellite-measured · conservative adjustment −10%
Forest Protection Framework (Multi-Scale / Nested)
Satellite-measured · conservative adjustment −15%
Improved Cropland Soil Carbon (Remote-Sensing Proxy)
Proxy estimate · conservative adjustment −20%
Sustainable Grassland Management
Satellite-measured · conservative adjustment −15%
Native Grassland — Fire & Grazing Monitoring
Satellite-measured · conservative adjustment −15%
Above-Ground Biomass Evaluation from Remote Sensing
Satellite-measured · conservative adjustment −15%
Afforestation / Reforestation Baseline Assessment
Satellite-measured · conservative adjustment −15%
Optical Remote-Sensing Carbon Estimation
Satellite-measured · conservative adjustment −15%
Improved Forest Management / Avoided Conversion
Satellite-measured · conservative adjustment −15%
Canopy-Based Carbon Accounting
Satellite-measured · conservative adjustment −15%
Reforestation of Degraded Land
Satellite-measured · conservative adjustment −15%
Machine-Learning Traceability with Very-High-Resolution Imagery
Proxy estimate · conservative adjustment −10%
Blue Carbon
4 profilesTidal Wetland & Seagrass Restoration
Satellite-measured · conservative adjustment −10%
Sustainable Mangrove Management
Satellite-measured · conservative adjustment −15%
Coastal Wetland Creation
Satellite-measured · conservative adjustment −20%
Coastal Wetland Inventory — Tiered Approach
Satellite-measured · conservative adjustment −5%
Renewable Energy
11 profilesGrid-Connected Renewable Generation — Large Scale (Combined-Margin Baseline)
Satellite-measured · conservative adjustment −10%
Grid-Connected Renewable Generation — Small Scale
Satellite-measured · conservative adjustment −15%
Solar Photovoltaic Generation
Satellite-measured · conservative adjustment −10%
Wind Power Generation
Satellite-measured · conservative adjustment −15%
Run-of-River & Small Hydropower
Satellite-measured · conservative adjustment −10%
Biomass & Biogas Energy Generation
Satellite-measured · conservative adjustment −15%
Mini-Grid, Captive & Off-Grid Renewable Electricity
Satellite-measured · conservative adjustment −15%
Renewable Generation with Storage & Grid Flexibility
Satellite-measured · conservative adjustment −15%
Energy Efficiency & Demand-Side Systems
Satellite-measured · conservative adjustment −15%
Fossil Asset Decommissioning (Just Transition)
Proxy estimate · conservative adjustment −20%
Energy Attribute & Market-Based Certificate Accounting
Proxy estimate · conservative adjustment −10%
Carbon Removal (CDR)
14 profilesBiochar Carbon Removal — Soil Application
Satellite-measured · conservative adjustment −15%
Biochar Carbon Removal — Non-Soil Material Use
Satellite-measured · conservative adjustment −15%
Biomass Power with Carbon Capture & Storage
Satellite-measured · conservative adjustment −15%
Industrial Biomass Carbon Capture
Satellite-measured · conservative adjustment −15%
Direct Air Capture with Dedicated Geological Storage
Satellite-measured · conservative adjustment −10%
Direct Air Capture with Mineral Storage / Durable Utilisation
Satellite-measured · conservative adjustment −15%
Industrial CO₂ Capture & Geological Storage
Satellite-measured · conservative adjustment −15%
CO₂ Storage in Saline Aquifers & Depleted Reservoirs
Satellite-measured · conservative adjustment −10%
CO₂ Capture from Natural Gas Processing
Satellite-measured · conservative adjustment −15%
Enhanced Weathering on Agricultural Land
Proxy estimate · conservative adjustment −20%
Enhanced Weathering in Closed & Ex-Situ Systems
Satellite-measured · conservative adjustment −15%
Carbon Mineralisation Using Reactive Mineral Waste
Satellite-measured · conservative adjustment −15%
Biomass Fermentation with Carbon Capture & Geologic Storage
Satellite-measured · conservative adjustment −15%
Durable Carbon Removal — Generic Mass-Balance & Durability
Satellite-measured · conservative adjustment −15%
Nature-Based Solution
5 profilesAbove-Ground Biomass Evaluation from Remote Sensing
Satellite-measured · conservative adjustment −15%
Canopy-Based Carbon Accounting
Satellite-measured · conservative adjustment −15%
Agroforestry Soil Organic Carbon
Proxy estimate · conservative adjustment −20%
Soil Organic Carbon Modelling
Proxy estimate · conservative adjustment −20%
Machine-Learning Traceability with Very-High-Resolution Imagery
Proxy estimate · conservative adjustment −10%
Professional Compliance & Auditability
Each Verifier Engine is versioned (e.g., AV-GC001), fully documented in English for third-party review, and follows a conservative, uncertainty-aware crediting approach (CI-95% lower-bound). All retirement records are anchored immutably on-chain, ensuring verifiability, permanence and audit trail integrity in line with professional carbon-market compliance expectations.