Hyperledger Case Studies Circulor achieves first-ever-mine-to-manufacturer traceability of a conflict mineral with Hyperledger Fabric
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Circulor achieves first-ever-mine-to-manufacturer traceability of a conflict mineral with Hyperledger Fabric

Hyperledger
Application Infrastructure & Middleware - Blockchain
Application Infrastructure & Middleware - Data Exchange & Integration
Infrastructure as a Service (IaaS) - Cloud Computing
Electronics
Mining
Logistics & Transportation
Procurement
Regulatory Compliance Monitoring
Supply Chain Visibility
Track & Trace of Assets
Cloud Planning, Design & Implementation Services
System Integration
Rwanda, the world's largest supplier of tantalum, a rare mineral used in devices like smartphones and laptops, faced a challenge in proving that every bag of tantalum ore was mined, transported, and processed under OECD-approved conditions, without any child or slave labor. The existing tracing methods involved tagging materials and filling in paper forms, which met the OECD rules but didn't provide actual traceability. It also generated a costly mountain of paper with room for errors or fraud. The challenge was to create a system that ensures tantalum is mined, transported, and processed under approved conditions with an unbroken chain of custody.
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The customer in this case study is the African country of Rwanda, the world's biggest supplier of tantalum. Tantalum is a rare mineral used to make capacitors found in devices like smartphones and laptops. A small region of Africa produces 60% of the world's supply, with Rwanda as the main exporter. However, tantalum was sometimes smuggled in from conflict-ridden Congo, where it was mined by children or workers enslaved by warlords. This led to the OECD, U.S., and EU naming tantalum a 'conflict mineral' and passing regulations to improve its traceability. Despite these rules, no one had a foolproof way to prove where tantalum actually came from.
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UK-based Circulor created a system that ensures tantalum is mined, transported, and processed under approved conditions with an unbroken chain of custody. Powered by a permissioned blockchain built on Hyperledger Fabric, the system uses facial recognition and QR codes to deliver a world first: mine-to-manufacturer traceability of this vital resource. After mapping every step of the supply chain for tantalum from mine to manufacturer, Circulor introduced new online procedures that generate reliable data at each step of the global supply chain. The system databases are hosted in the cloud through a combination of Oracle Cloud and Amazon Web Services.
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The blockchain-based system to trace tantalum went live in three mines and an ore-sorting facility in Rwanda in fall 2018.
The system is designed to slash today's high cost for compliance, satisfy regulators, reassure consumers, and build revenues for Rwanda.
The system went live smoothly at three mines in Rwanda and a refinery in Macedonia run by Power Resources Group (PRG).
The system is expected to reduce the cost of compliance for Rwandan mines.
The system is expected to boost the price for proven conflict-free ore, leading to more revenue for the Rwandan government, mine operators, and miners.
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