SustainBlock is a blockchain-based project to demonstrate supply chain accountability from artisanal and small-scale (ASM) mine sites all the way to mineral and metal end-users, and in turn provide downstream companies with access to information on the provenance of minerals contained in their products.Led by supply chain sustainability systems provider iPoint-Systems, the project implements the BetterChain framework and Better Sourcing Program's active risk monitoring and management at a fully integrated platform to unlock value from upstream due diligence data and generate incentives for responsible procurement of minerals from conflict-affected and high-risk areas (CAHRAs), in compliance with the OECD Due Diligence Guidance.With EPRM support, SustainBlock pilot will be piloted along a tungsten supply chain originating from Rwanda.