
Chain of custody — Part 3: Requirements and guidelines for book and claim
STANDARD published on 23.1.2026
Designation standards: ISO 22095-3:2026
Publication date standards: 23.1.2026
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: International technical standard
Category: Technical standards ISO
Description / Abstract: This document provides requirements and guidelines for the application of the book and claim chain of custody model. It is applicable to any flow of materials or products or processes within a system, including how to attribute specified characteristics to flows of such processes. This document provides requirements and guidelines for the following matters, amongst others: general requirements for the book and claim chain of custody model; differentiations from mass balance; system boundaries including geography and time; attribution of material flows in and out; conversion factors; transparency, communication and claims.