This prompt looks at carbon sequestration, its frameworks and certifications, using a case study of carbon sequestration. The context of our work will be a small project of biochar production and its use in agriculture, initiated by Plenty4All.net (Toledo, Ohio, USA) and Ndhiwa, a community in Kenya. We are going to consider the hardware and the IT infrastructure required for carbon sequestration accounting, solutions that can be deployed worldwide, while reaching deep into local and low-tech areas, from the small stakeholders Ndhiwa, Kenya to large industrial stakeholders.