The code samples were tested in a cloud environment as well as in a local environment, which can be created using a virtual machine in VirtualBox using an Oracle Linux ISO image. Download Oracle VirtualBox 6.x and install it on a machine (Windows/macOS/Linux) with 16 GB RAM and a minimum of 100 GB HDD. Visit Chapter 4, Engage in Business Case on Blockchain Platform, in the Setting up OBP SDK section, for more details on installation steps.