In this paper. we use the blockchain technology to design a prototype to secure process data from a 3D-printer. Datastreams are gathered from various sources such as OPC UA servers and autonomous retrofit sensor nodes. This is followed by pre-processing for data reduction. https://www.bekindtopets.com/hot-choice-Dinner-Lady-Blueberry-Tart-TFN-30mL-Salt-Nicotine-Vape-Juice-best-save/