
The global push for transparency and accountability in supply chains has taken a significant step forward with the publication of two Draft International Standards (DIS) within the chain of custody framework:
- ISO/DIS 13662 – Chain of custody – Mass balance – Requirements and guidelines
- ISO/DIS 13659 – Chain of custody – Book and claim – Requirements and guidelines
These standards aim to harmonize organizations’ methods to track materials and sustainability claims throughout supply chains.