FMC position on mixed chain of custody models

Decisions made within the transport sector regarding alternative chain of custody approaches can also be applied to the transport-related emissions of materials in other FMC sectors such as steel, aluminium and cement & concrete. This promotes consistency across sectors and reflects the interconnected nature of supply chains. An overview of which chain of custody models are allowed in which sector can be found below.

FMC will continue to rely on existing leading relevant international chain of custody industry standards and frameworks

Last updated February 2026 – non exhaustive overview

FMC provides a non-exhaustive overview of detailed standards and guidelines by relevant international standard-setting bodies below. Members may consider these documents when applying chain of custody models, provided they do not contradict or undermine FMC’s overall objectives. These standards are not endorsed by FMC; rather, FMC presents them solely to inform members of current frameworks and positions available in the market.

SBTi

Corporate net-zero standard version 2.0

GHG protocol

Corporate value chain accounting and reporting standard

 ISO/DIS

ISO 22095:2020 Chain of custody – General terminology and models recently complemented with Amendment 1 22095:2020/Amd 1:2026

 ISO/DIS

ISO 22095-2:2026 Chain of custody – part 2: Requirements and guidelines for mass balance

ISO/DIS

ISO 22095-3:2026 Chain of custody – Part 3: Requirements and guidelines for book and claim

Position on chain of custody accounting models

The First Movers Coalition (FMC) sees mixed chain of custody carbon accounting models as promising mechanisms to further its mission of advancing the most critical, emerging climate technologies. This document provides an overview of these mixed chain-of-custody models, their opportunities and risks, as well as links to FMC’s sector specific guidance.

First Movers Coalition

A World Economic Forum Initiative
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