Significant potential exists to capture and store atmospheric carbon in soils using regenerative agricultural practices on farms, ranches, vineyards, and other agricultural lands. Under proper conditions, photosynthesis of plants and subsequent carbon transfer via their root systems can increase the soil carbon storage and contribute to a significant net reduction of Greenhouse Gases. GSI Environmental experts have assisted in the development of a new non-profit soil carbon registry, called BCarbon (href: https://bcarbon.org), a voluntary, nature-based soil carbon sequestration crediting platform. GSI has provided technical leadership to a diverse working group of representatives from academia, the agricultural industry, non-governmental agencies, and federal and state government agencies, to develop a scientifically rigorous monitoring, recording, and verification (MRV) process, whereby carbon credits can be certified based on actual measurements of belowground carbon over time. This protocol, called the Protocol for Measurement, Monitoring, and Quantification of the Accrual of Below-Ground Carbon Over Time, can be obtained at: https://bcarbon.org/s/031422_Soil_Metrics_Protocol-zygl.pdf.