While they mention participatin in the ASI Chain of Custody Standard, they do not mention any details about the chain of custody system they might have in place and what information they store and share. "Aluminum Stewardship Initiative (ASI): ASI aluminum is metal that has been produced and sourced, from its mined or recycled source and through each step in the value chain, in accordance with ASI’s Standards. We seek out aluminum materials with this certification, and participate as a member certified to the ASI Performance Standard and the ASI Chain of Custody Standard."