This is no longer the most up-to-date version. To view the latest guidance, see the revised Chain of Custody Models and Definitions Guidance v2 (2025).

This 2016 guidance developed by ISEAL on Chain of Custody (CoC) Models and Definitions complements ISEAL's Sustainability Claims Good Practice Guide and provides a shared baseline reference for different Chain of Custody (CoC) models, supporting consistency in understanding and implementation across different industries and sustainability systems. 

Since its initial publication in 2016, the guidance has served as a valuable resource for organisations seeking to align CoC models with credible sustainability claims. In 2024, we launched a revision process and public consultation to ensure the guidance remains relevant and practical for today’s shifting traceability landscape.