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Methodologies
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Governance
Methodology cover

Methodology for the Production and Verification of Quantified Emissions Tokens® (QETs) in Accordance with ISO 14064-3

This methodology establishes standardized processes for quantifying emissions factors, enabling verification while remaining agnostic to the measurement methodologies employed by producers of natural gas and other commodities.

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Methodology for the Production and Verification of Low Carbon Fuel Standard Quantified Emissions Tokens® (QET-LCFS) in Accordance with ISO 14064-3

This methodology defines procedures for producing and verifying QET-LCFS for California LCFS compliance, extending the core QET framework to incorporate LCFS-specific carbon intensity, fuel pathway, and CARB verification requirements.

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Methodology for the Production and Verification of Ethanol Quantified Emissions Tokens® (QET-Ethanol) in Accordance with ISO 14064-3

This methodology extends the core QET framework to ethanol production, addressing process-specific characteristics including biological fermentation, synthetic production pathways, and diverse feedstock sources.

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Methodology for the Production and Verification of Carbon Capture and Sequestration Quantified Emissions Tokens® (QET-CCS) — kgCO₂e Removed

This methodology defines a framework for QET-CCS, where each token represents 1 kgCO₂e permanently removed and immutably tracked via the EarnDLT registry.

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Methodology for the Production and Verification of Solid Fuel Thermal Quantified Emissions Tokens (QET-SOL) — kgCO₂e/MMBtu

This methodology defines procedures for producing, quantifying, disclosing, and verifying QET-SOL.

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Methodology for the Production and Verification of Renewable Natural Gas Quantified Emissions Token Thermal Certificates (QET-RNG) — kgCO₂e/MMBtu

This methodology defines QET-RNG Thermal Certificates, measuring GHG intensity in kgCO₂e/MMBtu.

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Methodology for the Production and Verification of Quantified Emissions Tokens® (QETs) in Accordance with ISO 14064-3

This comprehensive methodology document outlines a verifiable framework for the production of Quantified Emissions Tokens® (QETs) that is aligned with ISO 14064-3 verification requirements. The methodology establishes standardized processes for quantifying emissions factors while remaining agnostic to specific measurement methodologies employed by producers of natural gas and other commodities.

Methodology cover

Introduction and Scope

This methodology is designed to be compatible with and verifiable under ISO 14064-3 standards for greenhouse-gas quantification and reporting, while incorporating the principles of ISO 14067 for product carbon footprinting. It establishes the requirements for QET production regardless of the specific measurement technology or approach used by the producer, so long as the measurement methodology meets the minimum requirements for data quality, uncertainty management, and verification.

The Quantified Emissions Token (QET) serves as a digital container for verified environmental attributes and emissions data from real-world commodities. This methodology document provides the procedural framework for creating, validating, and verifying QETs that represent the environmental impacts of physical commodities, with particular focus on natural gas production, processing, transmission, and distribution.

This document is compliant with ISO 14064-3 standards for greenhouse-gas verification and validation.

The information contained in this document is intended solely for authorized recipients and may be legally privileged. Any unauthorized review, use, disclosure, or distribution is prohibited. Nothing contained herein shall be construed as providing legal, financial, or technical advice. Earn DLT, Inc. makes no warranties, express or implied, regarding the accuracy, completeness, or fitness for a particular purpose of the information contained herein.

No part of this document may be reproduced, distributed to third parties, in whole or in part, without the express written permission of Earn DLT, Inc. The methodology described herein, including the Quantified Emissions Token® (QET) framework, is the intellectual property of Earn DLT, Inc. and is subject to patent and/or other intellectual property protections.

© 2025 Earn DLT, Inc. All rights reserved. This document contains proprietary and confidential information of Earn DLT, Inc. and is protected by copyright law. The Earn logo is a registered trademark of Earn DLT, Inc.

Contents

  1. 1. Key Objectives10
  2. 2. Normative References10
  3. 3. Terms and Definitions11
  4. 4. General Requirements for QET Production14
  5. 5. Quantification Methodology for QET Production17
  6. 6. Uncertainty Reporting Requirements34
  7. 7. QET Data Structure and Required Fields39
  8. 8. Verification and Validation Requirements72
  9. 9. QET Lifecycle Management103
  10. 10. Reporting and Communication104
  11. 11. Verification and Validation Distinction105
  12. 12. Competence Requirements for QET Validators and Verifiers 109
  13. 13. Independent Review Process116
  14. 14. Site Visit Requirements for QET Verification120
  15. 15. Facts Discovered After Verification129
  16. 16. Processing Operations – QET Implementation Guidance 134
  17. 17. Roles, Responsibilities, and Workflow in QET Production 144
  18. 18. Conclusion and Implementation149
  19. Appendix A: Transportation QET Implementation Guidance 150
  20. Appendix B: Processing Ops QET Implementation Guidance 150
  21. References157
  22. Citations157

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Methodology for the Production and Verification of Low Carbon Fuel Standard Quantified Emissions Tokens® (QET-LCFS) in Accordance with ISO 14064-3

This methodology defines procedures for producing and verifying QET-LCFS for California LCFS compliance, extending the core QET framework to incorporate LCFS-specific carbon intensity, fuel pathway, and CARB verification requirements.

Methodology cover

Introduction and Scope

The QET-LCFS methodology establishes a comprehensive framework for producing verified emissions tokens that meet California's Low Carbon Fuel Standard (LCFS) requirements. This methodology extends the core QET framework while incorporating specific requirements for carbon intensity calculation, fuel pathway certification, and CARB verification processes.

This document provides the procedures necessary for tracking and verifying the carbon intensity of transportation fuels throughout their lifecycle, ensuring compliance with California Air Resources Board (CARB) regulations while maintaining compatibility with ISO 14064-3 verification standards.

This document is compliant with ISO 14064-3 standards for greenhouse-gas verification and validation.

The information contained in this document is intended solely for authorized recipients and may be legally privileged. Any unauthorized review, use, disclosure, or distribution is prohibited. Nothing contained herein shall be construed as providing legal, financial, or technical advice. Earn DLT, Inc. makes no warranties, express or implied, regarding the accuracy, completeness, or fitness for a particular purpose of the information contained herein.

No part of this document may be reproduced, distributed to third parties, in whole or in part, without the express written permission of Earn DLT, Inc. The methodology described herein, including the Quantified Emissions Token® (QET) framework, is the intellectual property of Earn DLT, Inc. and is subject to patent and/or other intellectual property protections.

© 2025 Earn DLT, Inc. All rights reserved. This document contains proprietary and confidential information of Earn DLT, Inc. and is protected by copyright law. The Earn logo is a registered trademark of Earn DLT, Inc.

Contents

  1. Executive Summary1
  2. 1. Key Objectives1
  3. 2. Normative References1
  4. 3. Terms and Definitions2
  5. 4. General Requirements for QET-LCFS Production 3
  6. 5. LCFS-Specific Quantification Methodology 4
  7. 6. QET-LCFS Data Structure and Required Fields 5
  8. 7. Verification and Validation Requirements for QET-LCFS 7
  9. 8. LCFS Credit Generation and Reporting 8
  10. 9. Monitoring and Continuous Improvement 9
  11. 10. Implementation Timeline and Compliance 9
  12. Conclusion11

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EarnDLT Platform and Greentruth Marketplace (GTM) Program Governance Framework & Registry Operating Procedures

This Governance Framework sets the principles, requirements, and procedures for environmental certificate programs on EarnDLT and Greentruth (GTM). It ensures environmental integrity and regulatory compliance in accordance with ISO 14064-3:2019, ISO 14065:2020, and ISO/IEC 17029:2019.

Governance cover

Purpose and Scope

This Governance Framework defines the principles, requirements, and procedures governing environmental certificate programs operated on the EarnDLT Platform and Greentruth Marketplace (GTM). It applies to all Quantified Emissions Tokens (QETs) and Environmental Impact Assets issued through the EarnDLT registry—including energy-based, mass-based, and electrical QETs; sectoral compliance instruments such as LCFS and RFS attributes; carbon removal and sequestration certificates; and third-party environmental programs administered on the platform. The Framework ensures environmental integrity and regulatory compliance in alignment with ISO 14064-3:2019, ISO 14065:2020, and ISO/IEC 17029:2019.

Governance is executed through documented procedures and clearly assigned decision-making authority rather than standing committees, enabling operational agility while maintaining ISO-compliant oversight. The Framework applies to programs owned by Earn and GTM, as well as third-party programs administered on the platform under defined onboarding and approval requirements, and may evolve to formal governance bodies as platform complexity increases.

Prepared as an ISO 14065:2020, ISO 14064-3:2019, and ISO/IEC 17029:2019 Compliant Governance Framework for Environmental Certificate Programs

The information contained in this document is intended solely for authorized recipients and may be legally privileged. Any unauthorized review, use, disclosure, or distribution is prohibited. Nothing contained herein shall be construed as providing legal, financial, or technical advice. Earn DLT, Inc. makes no warranties, express or implied, regarding the accuracy, completeness, or fitness for a particular purpose of the information contained herein.

No part of this document may be reproduced, distributed to third parties, in whole or in part, without the express written permission of Earn DLT, Inc. The methodology described herein, including the Quantified Emissions Token® (QET) framework, is the intellectual property of Earn DLT, Inc. and is subject to patent and/or other intellectual property protections.

© 2025 Earn DLT, Inc. All rights reserved. This document contains proprietary and confidential information of Earn DLT, Inc. and is protected by copyright law. The Earn logo is a registered trademark of Earn DLT, Inc.

Contents

  1. 1. Purpose, Scope, and Definitions9
  2. 2. Governance Architecture for Programs on the Platform14
  3. 3. Program Onboarding and Approval24
  4. 4. Common Principles and Minimum Standards for All Programs34
  5. 5. Program Schedules (Program-Specific Annexes)49
  6. 6. Registry Services and Interface with Programs55
  7. 7. Roles and Responsibilities – EarnDLT/GTM vs Program Owner72
  8. 8. Risk Management and Oversight Across Programs83
  9. 9. Complaints, Appeals, and Dispute Resolution88
  10. 10. Transparency, Engagement, and Market Communication95
  11. 11. Amendments, Versioning, and Transitional Provisions101
  12. 12. Legal and Contractual Relationships105

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Methodology for the Production and Verification of Ethanol Quantified Emissions Tokens® (QET-Ethanol) in Accordance with ISO 14064-3

This methodology extends the core QET framework to ethanol production, addressing process-specific characteristics including biological fermentation, synthetic production pathways, and diverse feedstock sources.

Methodology cover

Introduction and Scope

The QET-Ethanol methodology provides a specialized framework for quantifying and verifying emissions associated with ethanol production. This methodology addresses the unique characteristics of ethanol manufacturing, including biological fermentation processes, diverse feedstock options, and both conventional and advanced production pathways.

This document establishes requirements for tracking emissions throughout the ethanol production lifecycle, from feedstock cultivation and processing through fermentation, distillation, and distribution, while maintaining compliance with ISO 14064-3 verification standards.

This document is compliant with ISO 14064-3 standards for greenhouse-gas verification and validation.

The information contained in this document is intended solely for authorized recipients and may be legally privileged. Any unauthorized review, use, disclosure, or distribution is prohibited. Nothing contained herein shall be construed as providing legal, financial, or technical advice. Earn DLT, Inc. makes no warranties, express or implied, regarding the accuracy, completeness, or fitness for a particular purpose of the information contained herein.

No part of this document may be reproduced, distributed to third parties, in whole or in part, without the express written permission of Earn DLT, Inc. The methodology described herein, including the Quantified Emissions Token® (QET) framework, is the intellectual property of Earn DLT, Inc. and is subject to patent and/or other intellectual property protections.

© 2025 Earn DLT, Inc. All rights reserved. This document contains proprietary and confidential information of Earn DLT, Inc. and is protected by copyright law. The Earn logo is a registered trademark of Earn DLT, Inc.

Contents

  1. 1. Scope9
  2. 2. Normative References11
  3. 3. Terms and Definitions13
  4. 4. General Requirements for QET-Ethanol Production 16
  5. 5. Quantification Methodology for QET-Ethanol Production 21
  6. 6. Uncertainty Reporting Requirements 38
  7. 7. QET-Ethanol Data Structure and Required Fields 40
  8. 8. Verification and Validation Requirements 52
  9. 9. Reporting and Communication 59
  10. 10. Competence Requirements for Validators and Verifiers 63
  11. 11. Independent Review Process 67
  12. 12. Site Visit Requirements 69
  13. 13. Facts Discovered After Verification 73
  14. 14. Roles, Responsibilities, and Workflow in QET-Ethanol Production 76
  15. 15. Appendices 86
  16. Appendix A: Complete JSON Schema Example 86

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Methodology for the Production and Verification of Carbon Capture and Sequestration Quantified Emissions Tokens® (QET-CCS) — kgCO₂e Removed

This methodology extends the core QET framework to ethanol production, addressing process-specific characteristics including biological fermentation, synthetic production pathways, and diverse feedstock sources.

Methodology cover

Introduction and Scope

The QET-CCS methodology establishes a comprehensive framework for quantifying, verifying, and tokenizing carbon dioxide removal through capture and sequestration technologies. Each QET-CCS token represents one kilogram of CO₂ equivalent permanently removed from the atmosphere and securely stored in geological formations.

This methodology addresses the complete CCS value chain, from carbon capture at emission sources through transportation and injection into geological storage sites, ensuring permanent sequestration and providing immutable verification through the EarnDLT registry system.

This document is compliant with ISO 14064-3 standards for greenhouse-gas verification and validation.

The information contained in this document is intended solely for authorized recipients and may be legally privileged. Any unauthorized review, use, disclosure, or distribution is prohibited. Nothing contained herein shall be construed as providing legal, financial, or technical advice. Earn DLT, Inc. makes no warranties, express or implied, regarding the accuracy, completeness, or fitness for a particular purpose of the information contained herein.

No part of this document may be reproduced, distributed to third parties, in whole or in part, without the express written permission of Earn DLT, Inc. The methodology described herein, including the Quantified Emissions Token® (QET) framework, is the intellectual property of Earn DLT, Inc. and is subject to patent and/or other intellectual property protections.

© 2025 Earn DLT, Inc. All rights reserved. This document contains proprietary and confidential information of Earn DLT, Inc. and is protected by copyright law. The Earn logo is a registered trademark of Earn DLT, Inc.

Contents

  1. Executive Summary1
  2. Table of Contents2
  3. 1. Introduction and Scope7
  4. 2. Normative References8
  5. 3. Terms and Definitions9
  6. 4. System Boundaries and Scope12
  7. 5. Eligible Carbon Capture and Sequestration Methodologies 13
  8. 6. Quantification Methodology17
  9. 7. Buffer Pool Administration and Reversal Risk Management 21
  10. 8. Data Requirements and Quality Assurance 24
  11. 9. Uncertainty Reporting Requirements 26
  12. 10. Verification Requirements30
  13. 11. QET-CCS Data Structure and JSON Schema 34
  14. 12. Documentation and Attestation Requirements 36
  15. 13. Permanence Monitoring and Reporting 38
  16. 14. Integration with EarnDLT Registry and Transparency Requirements 44
  17. 15. Pricing Structure and Fee Administration 47
  18. 16. Quality Assurance and Control 52
  19. 17. Roles, Responsibilities, and Workflow 55
  20. Appendix A: Glossary of Terms61
  21. Appendix B: Reference Documents and Resources 61

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Methodology for the Production and Verification of Solid Fuel Thermal Quantified Emissions Tokens (QET-SOL) — kgCO₂e/MMBtu

This methodology defines procedures for producing, quantifying, disclosing, and verifying QET-SOL, with GHG intensity standardized to kgCO₂e/MMBtu. It enables QET-SOL to function as audit-ready environmental attribute certificates aligned with ISO 14064-3 and referencing the EarnDLT QET core methodology.

Methodology cover

Introduction and Scope

The QET-SOL methodology provides a standardized framework for quantifying and verifying greenhouse gas emissions associated with solid fuel production and combustion. This methodology establishes procedures for measuring GHG intensity in units of kgCO₂e per million British thermal units (MMBtu), enabling transparent tracking of solid fuel environmental performance.

This document addresses the complete lifecycle of solid fuels, including extraction, processing, transportation, and end-use combustion, while providing mechanisms for environmental attribute certification that meet ISO 14064-3 verification standards.

This document is compliant with ISO 14064-3 standards for greenhouse-gas verification and validation.

The information contained in this document is intended solely for authorized recipients and may be legally privileged. Any unauthorized review, use, disclosure, or distribution is prohibited. Nothing contained herein shall be construed as providing legal, financial, or technical advice. Earn DLT, Inc. makes no warranties, express or implied, regarding the accuracy, completeness, or fitness for a particular purpose of the information contained herein.

No part of this document may be reproduced, distributed to third parties, in whole or in part, without the express written permission of Earn DLT, Inc. The methodology described herein, including the Quantified Emissions Token® (QET) framework, is the intellectual property of Earn DLT, Inc. and is subject to patent and/or other intellectual property protections.

© 2025 Earn DLT, Inc. All rights reserved. This document contains proprietary and confidential information of Earn DLT, Inc. and is protected by copyright law. The Earn logo is a registered trademark of Earn DLT, Inc.

Contents

  1. Executive Summary1
  2. 1. Introduction and Scope1
  3. 2. Normative References1
  4. 3. Terms and Definitions2
  5. 4. System Boundaries and Scope2
  6. 5. Quantification Methodology2
  7. 6. Data Requirements3
  8. 7. Uncertainty Reporting Requirements4
  9. 8. Verification Requirements6
  10. 9. QET-SOL Data Structure & JSON Specification 6
  11. 10. Lifecycle Management and Claims 9
  12. 11. Implementation Notes 9

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Methodology for the Production and Verification of Renewable Natural Gas Quantified Emissions Token Thermal Certificates (QET-RNG) — kgCO₂e/MMBtu

This methodology defines QET-RNG Thermal Certificates, measuring GHG intensity in kgCO₂e/MMBtu, with each token representing 1 MMBtu of verified renewable natural gas. Tokens are issued and tracked through the EarnDLT registry, providing immutable records and transparent chain-of-custody.

Methodology cover

Introduction and Scope

The QET-RNG methodology establishes a comprehensive framework for quantifying, verifying, and certifying renewable natural gas production. This methodology addresses the unique characteristics of RNG production from various feedstocks including agricultural waste, landfill gas, wastewater treatment facilities, and other organic sources.

Each QET-RNG token represents one million British thermal units (MMBtu) of verified renewable natural gas, with associated greenhouse gas intensity measured in kgCO₂e/MMBtu. This methodology ensures transparent tracking of environmental attributes while maintaining compatibility with existing renewable fuel standards and ISO 14064-3 verification requirements.

This document is compliant with ISO 14064-3 standards for greenhouse-gas verification and validation.

The information contained in this document is intended solely for authorized recipients and may be legally privileged. Any unauthorized review, use, disclosure, or distribution is prohibited. Nothing contained herein shall be construed as providing legal, financial, or technical advice. Earn DLT, Inc. makes no warranties, express or implied, regarding the accuracy, completeness, or fitness for a particular purpose of the information contained herein.

No part of this document may be reproduced, distributed to third parties, in whole or in part, without the express written permission of Earn DLT, Inc. The methodology described herein, including the Quantified Emissions Token® (QET) framework, is the intellectual property of Earn DLT, Inc. and is subject to patent and/or other intellectual property protections.

© 2025 Earn DLT, Inc. All rights reserved. This document contains proprietary and confidential information of Earn DLT, Inc. and is protected by copyright law. The Earn logo is a registered trademark of Earn DLT, Inc.

Contents

  1. Executive Summary1
  2. 1. Introduction and Scope3
  3. 2. Normative References4
  4. 3. Terms and Definitions4
  5. 4. System Boundaries and Scope5
  6. 5. Quantification Methodology6
  7. 6. Data Requirements10
  8. 7. Uncertainty Reporting Requirements11
  9. 8. Verification Requirements12
  10. 9. QET-RNG Data Structure and JSON Schema 17
  11. 10. Documentation and Attestation Requirements 26
  12. 11. Integration with Existing Systems 28
  13. 12. Quality Assurance and Control 30

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Tallgrass Case Study

Creating Value Through Machine-Readable Environmental Data Infrastructure

Tallgrass deployed Greentruth’s machine-readable data layer across the REX pipeline to preserve batch-level emissions data through comingled interstate flow without changing physical operations.

Tallgrass Case Study
Tallgrass Case Study

As a result, verified, delivery-specific carbon intensity data and transferable environmental attributes became visible, accessible, and transactionable across the entire ecosystem—producers, buyers, marketers, and Tallgrass alike.

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