Methodologies
Active methodologies on the Carrot Network — verified environmental impact through structured methodology, framework, and application layers.
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Overview
Methodologies on the Carrot Network define how environmental impact is measured, reported, and verified through digital Measurement, Reporting and Verification (digital MRV). Each approved methodology entry targets a specific environmental domain and is structured in three layers:
- Methodology — The validated scientific basis approved for use on the network.
- Methodology Verification Framework (MvF) — A structured specification that translates the methodology into concrete verification rules, formulas, and data requirements.
- Methodology Verification Application (MvA) — Open-source software that implements the MvF as executable rule processors. Each rule evaluates MassID documents and returns a PASSED or FAILED result with an explanation.
This three-layer architecture enables digital MRV (dMRV) at scale: methodologies define what to verify, frameworks define how to verify it, and applications execute the verification logic automatically.
Approved methodologies and frameworks
Carrot approves methodologies, methodology verification frameworks, and third-party dMRV applications for use on the Carrot Network. The methodology provides the validated scientific basis; the framework translates that basis into operational criteria; and the application executes those criteria in code.
Approval covers the full package: the scientific basis, the operational framework, and the executable application. This keeps responsibility with the contributor while giving Carrot a clear review path for quality, lifecycle, and network fit.
Active methodologies
| Approved entry | Approved basis | Credit | Token | Description |
|---|---|---|---|---|
| BOLD Recycling | Approved methodology/framework | TRC | C-BIOW | Organic waste diversion from landfills to composting |
| BOLD Carbon (CH₄) | Approved framework backed by AMS-III.F | TCC | C-CARB.CH4 | Prevented methane emissions through composting |
Open ecosystem
All methodology rules are open source under the LGPL-3.0 license. Anyone can audit the verification logic, propose improvements, or submit methodology proposals, methodology verification frameworks, and third-party dMRV applications for review and approval under the shared infrastructure.
- Source code: github.com/carrot-foundation/methodology-rules
- Governance: Managed by the Carrot Foundation with progressive expansion of community participation.
- Shared infrastructure: Methodologies reuse common rule processors. The majority of rules are shared across all active methodologies.
Learn more
- MvF — How Methodology Verification Frameworks are structured.
- MvA — How methodology rules are implemented as executable code.
- MvF Author Guide — How to write a Methodology Verification Framework.
- MvA Developer Guide — How to implement methodology rules in code.