State of California Tackles Drought with IoT & Blockchain. The sensors will transmit water extraction data to orbiting satellites and then to the IBM Blockchain Platform hosted in the IBM Cloud. The blockchain will record of all data exchanges or transactions made in an append-only, immutable ledger. The blockchain also uses “smart contracts,” whereby transactions are automatically executed when the conditions are matched. Through a web-based dashboard, water consumers, including farmers; financers and regulators will all be able to monitor and track the use of groundwater to demonstrate how sustainable pumping levels can be achieved through the trading of groundwater use shares in the State of California. Individual users who require groundwater amounts beyond their share cap will be able to “purchase” groundwater shares from users who do not require all of their supply at a market-regulated rate. (credits: IBM Research / Flickr Creative Commons Attribution-NoDerivs 2.0 Generic (CC BY-ND 2.0))

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