Blockchain Can Trace Carbon Emissions for Mining, Metals Companies, Proof of Concept Released The World Economic Forum’s Mining and Metals Blockchain Initiative (“MMBI”), released a proof of concept that uses distributed ledger technology to track embedded greenhouse gas emissions. A collaboration between seven leading industry players and the World Economic Forum, the initiative has hit an important stage of development following its launch in October 2019. The successful completion of the proof of concept, named the COT, a Carbon Tracing Platform will be critical in helping to ensure traceability of emissions from mine to the final product. With a focus on end-to-end traceability, the COT platform uses distributed ledger technology to track CO2 emissions.