Carbon Credit Systems & Registries
What is a carbon registry?
Carbon registries are secure, auditable platforms where carbon credits are issued, tracked, transferred, and retired. They ensure each credit is unique and not double-counted.
Sentinel Earth works exclusively with trusted registries like Verra, Gold Standard, and ACR to guarantee that every credit we generate or broker meets integrity and traceability requirements.
How do carbon credits get verified?
Verification involves third-party auditors ensuring the project reduced or removed the amount of CO₂ it claimed. Credits are only issued once this process is completed.
Sentinel Earth works with leading verifiers and registry bodies, ensuring our credits meet the highest standards in methodology and monitoring.
What is a carbon credit retirement?
Retirement means a credit is permanently taken out of circulation so it can’t be resold. This is how a buyer claims its climate benefit.
Sentinel Earth handles end-to-end registry transactions for clients, ensuring timely, transparent, and compliant retirement of credits.
What is a monitoring, reporting, and verification (MRV) system?
MRV refers to the systems used to measure emissions reductions, report them accurately, and verify results through third parties. It's foundational to credit quality and integrity.
Sentinel Earth builds robust MRV plans into all projects and ensures independent third-party verification to meet global standards.
What is a carbon project baseline?
A baseline is the reference scenario — what would happen without the project. Emission reductions are calculated as the difference between this baseline and the actual project results.
Sentinel Earth applies conservative and credible baselines to all projects to ensure that credits represent real, measurable climate gains.
What is project stacking in carbon markets?
Stacking is when a single project generates multiple credit types (e.g. carbon, biodiversity, water) from the same intervention. It requires clear accounting to avoid double counting.
Sentinel Earth advises on responsible stacking strategies that preserve climate integrity while maximizing project finance opportunities.
What are cookstove carbon credits?
Efficient cookstove projects reduce emissions by replacing open fires or inefficient stoves with cleaner alternatives — cutting CO₂ and improving health.
Sentinel Earth supports cookstove programs that meet strong additionality and monitoring standards, with clear social and gender co-benefits.
What are co-benefits in carbon projects?
Co-benefits are the environmental, social, and economic outcomes beyond emissions reductions — like biodiversity, job creation, or clean water.
Sentinel Earth prioritizes projects with high-impact co-benefits and reports them transparently to enhance buyer confidence and SDG alignment.
What is Verified Carbon Standard (VCS)?
The Verified Carbon Standard (VCS) is Verra's flagship program for certifying greenhouse gas reduction and removal projects, providing methodologies, validation and verification requirements, and registry infrastructure for issuing Verified Carbon Units (VCUs).
Sentinel Earth is active as a supplier on the VCS registry and can service clients requiring credits from this standard. Our Seeds of Recovery project in Ukraine generates verified carbon removal credits through regenerative agriculture practices under VCS methodology VM0042.
What is Climate Action Reserve (CAR)?
The Climate Action Reserve (CAR) is a North American carbon offset registry that develops standardized protocols, ensures third-party verification, and issues Climate Reserve Tonnes (CRTs) from projects meeting rigorous integrity and transparency standards.
Sentinel Earth is active as a supplier on the CAR registry and can service clients requiring credits from this standard.
What is American Carbon Registry (ACR)?
The American Carbon Registry (ACR) is a nonprofit carbon offset registry operated by Winrock International, providing standards and verification processes for carbon projects primarily in North American markets.
Sentinel Earth is active as a supplier on the ACR registry, servicing clients requiring credits from this standard.
What is Puro.earth?
Puro.earth is a carbon registry and standard specializing in engineered carbon dioxide removal methodologies, including biochar, enhanced weathering, and carbon capture, with rigorous permanence requirements and transparency protocols.
Sentinel Earth is active as a supplier on the Puro.earth registry and can service clients requiring credits from this standard. Our Dark Earth project, registered with Puro.earth, is Singapore's first biochar carbon removal initiative, converting organic waste into stable carbon applied to soils.
What is Validation?
Validation is an independent third-party assessment conducted before a carbon project begins generating credits, confirming that the project design, methodology application, additionality demonstration, and monitoring plan meet registry standards.
Sentinel Earth manages the validation process from Project Design Document preparation through validation body selection and stakeholder consultation, ensuring projects meet all requirements before implementation and monitoring begin.
What is Methodology?
A methodology is a standardized, registry-approved protocol that defines how to calculate, monitor, and verify emission reductions or removals for a specific project type, ensuring consistency, transparency, and environmental integrity.
Sentinel Earth applies methodologies from Verra, Gold Standard, Puro.earth, and other registries, selecting protocols that match project circumstances while delivering robust quantification and verification procedures.