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 Verra VCS and Gold Standard 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 VM0033-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 CDM/VERRA combined-margin baselines and independently metered output.
Baseline Grid Emissions
Counterfactual baseline derived from the combined margin (build margin + operating margin) of the regional grid 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.
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.