BitMari Smart Farm Contracts. Connect with and sponsor amazing women farmers in Africa. With Uphold Connect, BitMari users can sponsor commercial women farmers in Africa. - Smart Contract Technology: Integrating smart contract technology into contract farming. The movement of funds, redeeming of farm inputs, selling of produce can all be tracked and audited. - Fair Trade: adding transactional transparency and accountability in contract farming projects for farmers and consumers. Building the African Diaspora's Financial Solutions.