Organisation for Economic Cooperation & Development (OECD)+Chain of Custody/Traceability/Transparency System (Step 1.C.1)+Ishifuku Metal Industry Co., Ltd.+2018
Slightly superficial, but yes:
"Ishifuku has a robust gold- and silver-bearing materials receipts process. Specific documents must be received and transactional details entered before we process the gold- and silver-bearing materials. Each lot received is accurately registered in our transactional system." p. 2