BOLD Carbon (CH₄) Rules Reference

Overview

These are the application rules — the executable validation logic that runs against each MassID document. Each rule evaluates a document and returns PASSED, FAILED, or REVIEW_REQUIRED with an explanation.

Each application rule satisfies one or more framework rules from the BOLD Carbon (CH₄) methodology framework. See the "Implements framework rules" section in each rule's details for the mapping.

The BOLD Carbon (CH₄) framework defines a set of open-source rules to verify that organic waste has been properly diverted from landfills and composted, preventing methane emissions.

BOLD Carbon (CH₄) shares most rules with BOLD Recycling and adds methodology-specific rules for emissions calculation and geographic boundary validation.

Rules execute in a defined order against MassID documents. Passing them all is what triggers issuance of the GasID certificate.

All rules are licensed under LGPL-3.0: github.com/carrot-foundation/methodology-rules

View on Carrot Registry

MassID rules

These rules validate individual MassID documents. They execute in the order shown. Rules 1–19 are shared with BOLD Recycling; rule 20 is Carbon-exclusive.

See the Rewards Distribution Policy for the full percentage breakdown by actor type and waste category.

Learn about AMS-III.F · Learn about BOLD Recycling rules