In this session of the two-day hackathon, participants we divided into groups to develop a soil carbon accounting approach for one of four projects proposed by TNC, 4per1000, and World Bank for reducing accounting costs and uncertainties to achieve investor needs. A keynote presentation was given by Chandra Shekhar from the World Bank. This event was co-organized by CCAFS-CGIAR, The Nature Conservancy, 4 per 1000 Executive Secretariat, World Bank and the Meridian Institute. The purpose of this webinar and workshop series was to support investment-oriented actions promoting soil health and carbon storage by improving the accounting of soil carbon sequestration. We sought to answer the question: How can soil carbon accounting improve to support investment-oriented actions promoting soil health and carbon storage?