Ernst & Young (EY), one of the 'Big Four' accounting firms, has launched a beta version of its Ethereum-based platform for tracking carbon emissions and carbon credit traceability. The platform, called EY OpsChain ESG, provides a single, verifiable view of CO2 emissions to help enterprises accurately measure and track their carbon footprint. It also offers transparency to consumers, business partners, and regulators through a trusted platform for emissions and carbon credit traceability. EY OpsChain ESG has been built to the standards of the Microsoft-backed InterWork Alliance for Carbon Emissions Tokens and provides immutable reporting on an enterprise's current CO2e.