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/save-big-3-Pack-Lace-Trim-Brazilian-Panties-Grey-And-Red-great-buy/