ASI Chain of Custody (CoC) Standard

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Skip to CoC comment log

Introduction to CoC

ASI’s certification program aims to drive uptake of standards that foster responsible production, sourcing and stewardship of aluminium by companies in the supply chain.

The ASI Chain of Custody (CoC) Standard is being developed to connect assurance about business’ practices under the ASI Performance Standard, to claims about aluminium and responsible sourcing.

The ASI CoC Standard defines requirements for Entities and Facilities implementing chain of custody management systems, including systems for sourcing, accounting and transfer of CoC Material and Eligible Scrap. It covers both primary and secondary (recycled) production, throughout the aluminium supply chain.

What parts of the supply chain are covered by the CoC Standard?

The ASI CoC Standard defines 3 key stages for the flow of CoC Material in supply chains. These stages involve quite different kinds of entities responsible for handling raw materials, metal production, and further fabrication and manufacturing to final products:

  • Primary Aluminium: Mine to Casthouse
  • Recycled Aluminium: Scrap to Casthouse
  • Post-Casthouse: Semi-fabrication and manufacturing to final product.
ASI Chain of Custody standard

Current CoC Standard and Guidance documentation

The public comment period for the Chain of Custody (CoC) program has now ended. The comment period was open from Friday October 21 until Friday December 23, 2016. The current versions for the consultation are still available below, along with a log of comments received, though new comments and feedback will no longer be collected nor accepted until the next round of consultation in 2017.


An initial log of the comments received is available in an Excel file below. The comments can be re-ordered using the filter tabs at the head of each column. A separate tab groups specific feedback on the Market Credits System that was submitted in a dedicated section on the comments form.

ASI sincerely thanks all who took the time to review and provide feedback on the CoC drafts. The ASI Standards Committee will consider and address the feedback and comments received during the first quarter of 2017. The comments log will be updated with a description of how the various input was addressed in the upcoming Draft 4.

Subscribe to our monthly newsletter to stay up to date with the process.

Recorded Webinars

The following provide background and supporting information on key aspects of the proposed ASI CoC approach:

ASI Overview
– webinar
– slide presentation

ASI Chain of Custody Overview
– webinar
– slide presentation

What is Due Diligence?
– webinar
– slide presentation

Draft 1 of the CoC Standard was drafted and reviewed with the ASI Standards Setting Group (SSG) during 2014.  It proposed a mass-balance volume-credit model, which can be applied at the company and/or facility level. Following input from the SSG and some stakeholders, Draft 2 of the CoC Standard was then published on the ASI website in January 2015.

In April 2016, the ASI Standards Committee was established and has worked to formalise its approach to standards development in accordance with ISEAL requirements, and prepared a new draft of the CoC Standard for public comment. The following have now been published on the ASI website:

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