9 Scientific, surveying, weighing, measuring, signalling, checking in the nature of supervision, teaching apparatus and instruments, namely instruments for measuring voltage, current, power, capacity, frequency and other quantities and qualities of electricity and instruments for measuring weight, volume, and other quantities and qualities of commodities and other bulk products; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely electrical controllers or electrical switches; digital recording media, namely hard drives, physical storage devices or databases storing data received through distributed ledger technology or the Internet; calculating machines, data processing equipment, and computers; computer software for sending and receiving order data and trade executions for energy and commodities and other bulk products through distributed ledger technology or the Internet; recorded data files in the nature of immutable records of transactions in energy and commodities and other bulk products, stored in distributed ledger technology; apparatus and instruments, namely apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; safety, security, protection and signalling devices, namely digital signal processors; tracking, targeting and map making devices namely GPS tracking devices for the physical location of commodities and other bulk products and for the physical location of demand, production, conveyors or congestion of electricity; measuring, detecting and monitoring instruments, indicators and controllers, namely instruments for measuring voltage, current, power, capacity, frequency and other quantities and qualities of electricity and instruments for measuring weight, volume, and other quantities and qualities of commodities and other bulk products; electric power distribution apparatus, namely electrical power distribution units; electric control devices for energy management; Computer application software for interacting with a distributed ledger technology system for sending and receiving order data and trade executions for energy and commodities and other bulk products through or the Internet